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Dew point

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2029: 1427: 1389: 2024:{\displaystyle {\begin{aligned}P_{\mathrm {s,m} }(T)&=ae^{\left(b-{\frac {T}{d}}\right)\left({\frac {T}{c+T}}\right)};\\\gamma _{\mathrm {m} }(T,\mathrm {RH} )&=\ln \left({\frac {\mathrm {RH} }{100}}e^{\left(b-{\frac {T}{d}}\right)\left({\frac {T}{c+T}}\right)}\right);\\T_{d}&={\frac {c\ln {\frac {P_{\mathrm {a} }(T)}{a}}}{b-\ln {\frac {P_{\mathrm {a} }(T)}{a}}}}={\frac {c\ln \left({\frac {\mathrm {RH} }{100}}{\frac {P_{\mathrm {s,m} }(T)}{a}}\right)}{b-\ln \left({\frac {\mathrm {RH} }{100}}{\frac {P_{\mathrm {s,m} }(T)}{a}}\right)}}={\frac {c\gamma _{m}(T,\mathrm {RH} )}{b-\gamma _{m}(T,\mathrm {RH} )}};\end{aligned}}} 917: 61: 458:. People accustomed to temperate climates often begin to feel uncomfortable when the dew point gets above 15 °C (59 °F), while others might find dew points up to 18 °C (64 °F) comfortable. Most inhabitants of temperate areas will consider dew points above 21 °C (70 °F) oppressive and tropical-like, while inhabitants of hot and humid areas may not find this uncomfortable. Thermal comfort depends not just on physical environmental factors, but also on psychological factors. 1384:{\displaystyle {\begin{aligned}P_{\mathrm {s} }(T)&={\frac {100}{\mathrm {RH} }}P_{\mathrm {a} }(T)=ae^{\frac {bT}{c+T}};\\P_{\mathrm {a} }(T)&={\frac {\mathrm {RH} }{100}}P_{\mathrm {s} }(T)=ae^{\gamma (T,\mathrm {RH} )}\\&\approx P_{\mathrm {s} }(T_{\mathrm {w} })-BP_{\mathrm {mbar} }0.00066\left(1+0.00115T_{\mathrm {w} }\right)\left(T-T_{\mathrm {w} }\right);\\T_{\mathrm {d} }&={\frac {c\ln {\frac {P_{\mathrm {a} }(T)}{a}}}{b-\ln {\frac {P_{\mathrm {a} }(T)}{a}}}};\end{aligned}}} 2578: 597: 825: 2364: 628: 2339: 397:
When the air temperature is high, the human body uses the evaporation of perspiration to cool down, with the cooling effect directly related to how fast the perspiration evaporates. The rate at which perspiration can evaporate depends on how much moisture is in the air and how much moisture the air
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As the air surrounding one's body is warmed by body heat, it will rise and be replaced with other air. If air is moved away from one's body with a natural breeze or a fan, sweat will evaporate faster, making perspiration more effective at cooling the body, thereby increasing comfort. By contrast,
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are used to measure dew point over a wide range of temperatures. These devices consist of a polished metal mirror which is cooled as air is passed over it. The dew point is revealed by observing the loss of clarity in the reflection cast by the mirror. Manual devices of this sort can be used to
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The dew point depends on how much water vapor the air contains. If the air is very dry and has few water molecules, the dew point is low and surfaces must be much cooler than the air for condensation to occur. If the air is very humid and contains many water molecules, the dew point is high and
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A high relative humidity implies that the dew point is close to the current air temperature. A relative humidity of 100% indicates the dew point is equal to the current temperature and that the air is maximally saturated with water. When the moisture content remains constant and temperature
389:(5,280 ft or 1,610 m elevation). Because Denver is at a higher elevation than New York, it will tend to have a lower barometric pressure. This means that if the dew point and temperature in both cities are the same, the amount of water vapor in the air will be greater in Denver. 388:
Increasing the barometric pressure raises the dew point. This means that, if the pressure increases, the mass of water vapor per volume unit of air must be reduced in order to maintain the same dew point. For example, consider New York City (33 ft or 10 m elevation) and Denver
2155:, Arden Buck presents several different valuation sets, with different maximum errors for different temperature ranges. Two particular sets provide a range of −40 °C to +50 °C between the two, with even lower maximum error within the indicated range than all the sets above: 402:
will produce perspiration in an effort to keep the body at its normal temperature even when the rate at which it is producing sweat exceeds the evaporation rate, so one can become coated with sweat on humid days even without generating additional body heat (such as by exercising).
2573:{\displaystyle {\begin{aligned}T_{\mathrm {d,^{\circ }F} }&\approx T_{\mathrm {{}^{\circ }F} }-{\tfrac {9}{25}}\left(100-\mathrm {RH} \right);\\\mathrm {RH} &\approx 100-{\tfrac {25}{9}}\left(T_{\mathrm {{}^{\circ }F} }-T_{\mathrm {d,^{\circ }F} }\right);\end{aligned}}} 430:
Lower dew points, less than 10 °C (50 °F), correlate with lower ambient temperatures and cause the body to require less cooling. A lower dew point can go along with a high temperature only at extremely low relative humidity, allowing for relatively effective cooling.
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rises as the temperature falls; this is because less vapor is needed to saturate the air. In normal conditions, the dew point temperature will not be greater than the air temperature, since relative humidity typically does not exceed 100%.
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calibrate other types of humidity sensors, and automatic sensors may be used in a control loop with a humidifier or dehumidifier to control the dew point of the air in a building or in a smaller space for a manufacturing process.
820:{\displaystyle {\begin{aligned}\gamma (T,\mathrm {RH} )&=\ln \left({\frac {\mathrm {RH} }{100}}\right)+{\frac {bT}{c+T}};\\T_{\mathrm {d} }&={\frac {c\gamma (T,\mathrm {RH} )}{b-\gamma (T,\mathrm {RH} )}};\end{aligned}}} 2209:
There is also a very simple approximation that allows conversion between the dew point, temperature, and relative humidity. This approach is accurate to within about ±1 °C as long as the relative humidity is above 50%:
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recommends indoor air be maintained at 20–24.5 °C (68–76 °F) with a 20–60% relative humidity, equivalent to a dew point of approximately 4.0 to 16.5 °C (39 to 62 °F) (by Simple Rule calculation below).
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The derivation of this approach, a discussion of its accuracy, comparisons to other approximations, and more information on the history and applications of the dew point, can be found in an article published in the
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Discomfort also exists when the dew point is very low (below around −5 °C or 23 °F). The drier air can cause skin to crack and become irritated more easily. It will also dry out the airways. The US
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For example, a relative humidity of 100% means dew point is the same as air temp. For 90% RH, dew point is 3 °F lower than air temperature. For every 10 percent lower, dew point drops 3 °F.
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For every 1 °C difference in the dew point and dry bulb temperatures, the relative humidity decreases by 5%, starting with RH = 100% when the dew point equals the dry bulb temperature.
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across a range of temperatures can contain. For a lower ambient pressure, a curve has to be drawn above the current curve. A higher ambient pressure yields a curve under the current curve.
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at which it evaporates. At temperatures below the dew point, the rate of condensation will be greater than that of evaporation, forming more liquid water. The condensed water is called
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to which it must be cooled to become saturated with water vapor. This temperature depends on the pressure and water content of the air. When the air is cooled below the dew point, its
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point for a given parcel of air is always higher than the dew point, as breaking the stronger bonding between water molecules on the surface of ice compared to the surface of (
3005: 2334:{\displaystyle {\begin{aligned}T_{\mathrm {d} }&\approx T-{\frac {100-\mathrm {RH} }{5}};\\\mathrm {RH} &\approx 100-5(T-T_{\mathrm {d} });\end{aligned}}} 2865: 3335: 2748: 2354: 3183: 423: 2590:
The frost point is similar to the dew point in that it is the temperature to which a given parcel of humid air must be cooled, at constant
2890: 2917:"02/24/2003 - Reiteration of Existing OSHA Policy on Indoor Air Quality: Office Temperature/Humidity and Environmental Tobacco Smoke" 348:, depending on its altitude when it forms. If the temperature is below the dew point, and no dew or fog forms, the vapor is called 3090: 2916: 3328: 2940:
Lin, Tzu-Ping (10 February 2009). "Thermal perception, adaptation and attendance in a public square in hot and humid regions".
3477: 2710: 3243:"The Relationship between Relative Humidity and the Dewpoint Temperature in Moist Air: A Simple Conversion and Applications" 3032:"The Relationship between Relative Humidity and the Dewpoint Temperature in Moist Air: A Simple Conversion and Applications" 3144: 3774: 3789: 245: 3031: 3497: 3321: 3784: 3645: 3156: 3804: 3210: 3117: 3692: 2607: 470:
A dew point of 35 °C (95 °F) — while the temperature was 42 °C (108 °F) — was observed at
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can hold. If the air is already saturated with moisture (humid), perspiration will not evaporate. The body's
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Graph of the dependence of the dew point upon air temperature for several levels of relative humidity.
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In technical terms, the dew point is the temperature at which the water vapor in a sample of
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were selected by minimizing the maximum deviation over the range -40°C to +50°C.
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Department of Atmospheric Sciences (DAS) at the University of Illinois at Urbana-Champaign
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The more complete formulation and origin of this approximation involves the interrelated
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When the temperature is below the freezing point of water, the dew point is called the
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Temperature at which air becomes saturated with water vapour during a cooling process
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Relative Humidity and Dewpoint Temperature from Temperature and Wet-Bulb Temperature
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condensation can occur on surfaces that are only a few degrees cooler than the air.
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If all the other factors influencing humidity remain constant, at ground level the
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This article is about the meteorological dew point. For the petroleum term, see
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This graph shows the maximum percentage, by mass, of water vapor that air at
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increases, relative humidity decreases, but the dew point remains constant.
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Moisture Control Guidance for Building Design, Construction and Maintenance
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For temperatures in degrees Fahrenheit, these approximations work out to
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rather than condensation. In liquids, the analog to the dew point is the
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climates acclimatize somewhat to higher dew points. Thus, a resident of
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A well-known empirical approximation used to calculate the dew point,
3396: 3376: 3361: 443: 418:, so it provides a good measure for use in evaluating comfort level. 3745: 3707: 3621: 3366: 3184:"New Equations for Computing Vapor Pressure and Enhancement Factor" 2058:'s presentation are taken from a 1980 paper by David Bolton in the 2054:
There are several different constant sets in use. The ones used in
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is (unless declared otherwise, all temperatures are expressed in
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if it freezes. In the air, the condensed water is called either
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or approximated with the barometric pressure (in millibars),
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10.1175/1520-0450(1981)020<1527:NEFCVP>2.0.CO;2
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10.1175/1520-0493(1980)108<1046:TCOEPT>2.0.CO;2
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comfort decreases as unevaporated perspiration increases.
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Often Needed Answers about Temp, Humidity & Dew Point
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pilots use dew point data to calculate the likelihood of
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Another common set of values originates from the 1974
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These valuations provide a maximum error of 0.1%, for
617:, given just the actual ("dry bulb") air temperature, 3343: 3091:"The Computation of Equivalent Potential Temperature" 2367: 2216: 1430: 920: 631: 2606:without undergoing the liquid phase (compare with 2572: 2333: 2023: 1383: 819: 474:, Saudi Arabia, at 3:00 p.m. on 8 July 2003. 270:capacity is reduced and airborne water vapor will 2699:John M. Wallace; Peter V. Hobbs (24 March 2006). 2343:This can be expressed as a simple rule of thumb: 3766: 392: 3247:Bulletin of the American Meteorological Society 3036:Bulletin of the American Meteorological Society 2893:. The City and County of Denver. Archived from 2692: 2355:Bulletin of the American Meteorological Society 2618:) liquid water requires a higher temperature. 2153:Journal of Applied Meteorology and Climatology 3329: 2921:Occupational Safety and Health Administration 497:Relative humidity at 32 °C (90 °F) 424:Occupational Safety and Health Administration 239: 3478:Convective available potential energy (CAPE) 3145:SHTxx Application Note Dew-point Calculation 591: 461: 2702:Atmospheric Science: An Introductory Survey 3336: 3322: 2831: 2731:Glossary – NOAA's National Weather Service 2686:Glossary – NOAA's National Weather Service 1412:, RH)) can be enhanced, using part of the 246: 232: 3266: 3157:"MET4 and MET4A Calculation of Dew Point" 2825: 625:(in percent), RH, is the Magnus formula: 3237: 3029: 2883: 2746: 595: 328:condenses into liquid water at the same 36: 2821:. U.S. Environmental Protection Agency. 2742: 2740: 2668:"How To: Eliminate Window Condensation" 2204: 281:The dew point is affected by the air's 14: 3767: 3088: 2093:. Also noteworthy is the Sonntag1990, 3317: 3030:Lawrence, Mark G. (1 February 2005). 2122:Psychrometry and Psychrometric Charts 336:when it forms on a solid surface, or 3181: 2737: 3440:Convective condensation level (CCL) 2939: 24: 3646:Equivalent potential temperature ( 2552: 2539: 2524: 2475: 2472: 2455: 2452: 2419: 2391: 2378: 2315: 2280: 2277: 2259: 2256: 2227: 2004: 2001: 1966: 1963: 1905: 1899: 1881: 1878: 1830: 1824: 1806: 1803: 1756: 1712: 1594: 1591: 1563: 1560: 1544: 1447: 1441: 1350: 1306: 1272: 1248: 1220: 1191: 1188: 1185: 1182: 1161: 1146: 1121: 1118: 1079: 1064: 1061: 1036: 974: 962: 959: 931: 888:), which can be either found with 800: 797: 769: 766: 734: 682: 679: 652: 649: 378:, and to estimate the height of a 25: 3816: 3498:Conditional symmetric instability 3344:Meteorological data and variables 3301: 2891:"Denver Facts Guide – Today" 3445:Lifting condensation level (LCL) 3281: 3182:Buck, Arden L. (December 1981). 2986:from the original on 2 July 2017 2832:Horstmeyer, Steve (2006-08-15). 2774:"Observed Dew Point Temperature" 2705:. Academic Press. pp. 83–. 59: 3430:Cloud condensation nuclei (CCN) 3275: 3231: 3175: 3149: 3138: 3082: 3069: 3023: 2998: 2968: 2933: 2909: 2847: 1420:, which adds a fourth constant 3693:Wet-bulb potential temperature 3535:Level of free convection (LFC) 3191:Journal of Applied Meteorology 2962:10.1016/j.buildenv.2009.02.004 2811: 2804:Merriam-Webster.com Dictionary 2791: 2766: 2747:Skilling, Tom (20 July 2011). 2719: 2674: 2660: 2585: 2321: 2300: 2008: 1991: 1970: 1953: 1917: 1911: 1842: 1836: 1768: 1762: 1724: 1718: 1567: 1550: 1459: 1453: 1362: 1356: 1318: 1312: 1167: 1152: 1125: 1108: 1091: 1085: 1048: 1042: 986: 980: 943: 937: 804: 787: 773: 756: 656: 639: 478: 468:Highest dew point temperature: 274:to form liquid water known as 262:of a given body of air is the 13: 1: 3736:Pressure-gradient force (PGF) 3658:Sea surface temperature (SST) 3493:Convective momentum transport 2653: 393:Relationship to human comfort 3550:Bulk Richardson number (BRN) 3310:from the sci.geo.meteorology 7: 3754:Maximum potential intensity 3520:Free convective layer (FCL) 3483:Convective inhibition (CIN) 3284:"Frost point and dew point" 3089:Bolton, David (July 1980). 2621: 307: 10: 3821: 3775:Atmospheric thermodynamics 3688:Wet-bulb globe temperature 3545:Maximum parcel level (MPL) 835:= 243.04°C. The values of 603: 29: 3790:Meteorological quantities 3744: 3706: 3668:Thermodynamic temperature 3602:Forest fire weather index 3558: 3468: 3415: 3349: 621:(in degrees Celsius) and 592:Calculating the dew point 493: 462:Dew point weather records 160:Thermodynamic equilibrium 3590:Equivalent temperature ( 3503:Convective temperature ( 3387:Surface weather analysis 2942:Building and Environment 169:Measures and instruments 3785:Humidity and hygrometry 3637:Potential temperature ( 3382:Surface solar radiation 53:Humidity and hygrometry 3805:Threshold temperatures 3627:Relative humidity (RH) 3515:Equilibrium level (EL) 3488:Convective instability 3098:Monthly Weather Review 2648:Thermodynamic diagrams 2574: 2349: 2335: 2192:= 247.15 °C; for 2170:= 238.88 °C; for 2116:(error ±0.35 °C). 2108:= 243.12 °C; for 2060:Monthly Weather Review 2025: 1393:For greater accuracy, 1385: 821: 601: 46: 3268:10.1175/BAMS-86-2-225 3056:10.1175/BAMS-86-2-225 2638:Hydrocarbon dew point 2575: 2345: 2336: 2147:(error ±0.4 °C). 2139:= 237.7 °C; for 2026: 1386: 822: 599: 40: 32:Hydrocarbon dew point 3716:Atmospheric pressure 3683:Wet-bulb temperature 3585:Dry-bulb temperature 3580:Dew point depression 2592:atmospheric pressure 2365: 2214: 2205:Simple approximation 2184:= 6.1121 mbar, 2162:= 6.1121 mbar, 2091:1% < RH < 100% 2038:= 6.1121 mbar, 1428: 1416:, also known as the 918: 629: 412:wet bulb thermometer 219:Wet-bulb temperature 82:Dew point depression 3678:Virtual temperature 3663:Temperature anomaly 3357:Adiabatic processes 3259:2005BAMS...86..225L 3203:1981JApMe..20.1527B 3110:1980MWRv..108.1046B 3048:2005BAMS...86..225L 2954:2009BuEnv..44.2017L 2897:on February 3, 2007 2871:on 16 February 2018 2670:. 15 November 2021. 2131:= 6.105 mbar, 2100:= 6.112 mbar, 2069:= 6.112 mbar, 1418:Arden Buck equation 606:Psychrometric chart 416:evaporative cooling 354:condensation nuclei 326:barometric pressure 3450:Precipitable water 2836:. Steve Horstmeyer 2807:. Merriam-Webster. 2570: 2568: 2502: 2438: 2331: 2329: 2046:= 257.14 °C, 2021: 2019: 1414:Bögel modification 1381: 1379: 817: 815: 602: 434:People inhabiting 130:Humidity buffering 47: 43:sea-level pressure 3762: 3761: 3731:Pressure gradient 3540:Lifted index (LI) 3241:(February 2005). 3239:Lawrence, Mark G. 3197:(12): 1527–1532. 2948:(10): 2017–2026. 2712:978-0-08-049953-6 2501: 2437: 2267: 2012: 1932: 1924: 1888: 1849: 1813: 1778: 1775: 1731: 1654: 1627: 1601: 1523: 1496: 1404:) (and therefore 1372: 1369: 1325: 1071: 1020: 966: 808: 719: 689: 623:relative humidity 589: 588: 582:Under 50 °F 579:Under 10 °C 314:relative humidity 256: 255: 183:Sat. vap. density 68:Specific concepts 16:(Redirected from 3812: 3338: 3331: 3324: 3315: 3314: 3295: 3294: 3292: 3290: 3279: 3273: 3272: 3270: 3235: 3229: 3228: 3226: 3225: 3219: 3213:. Archived from 3188: 3179: 3173: 3172: 3170: 3168: 3159:. Archived from 3153: 3147: 3142: 3136: 3135: 3133: 3132: 3126: 3120:. Archived from 3104:(7): 1046–1053. 3095: 3086: 3080: 3073: 3067: 3066: 3064: 3062: 3027: 3021: 3020: 3018: 3017: 3010:Klean Industries 3002: 2996: 2995: 2993: 2991: 2972: 2966: 2965: 2937: 2931: 2930: 2928: 2927: 2913: 2907: 2906: 2904: 2902: 2887: 2881: 2880: 2878: 2876: 2870: 2864:. Archived from 2859: 2851: 2845: 2844: 2842: 2841: 2829: 2823: 2822: 2815: 2809: 2808: 2795: 2789: 2788: 2786: 2784: 2770: 2764: 2763: 2761: 2759: 2744: 2735: 2734: 2723: 2717: 2716: 2696: 2690: 2689: 2678: 2672: 2671: 2664: 2602:on a surface as 2579: 2577: 2576: 2571: 2569: 2562: 2558: 2557: 2556: 2555: 2551: 2550: 2529: 2528: 2527: 2523: 2522: 2517: 2503: 2494: 2478: 2463: 2459: 2458: 2439: 2430: 2424: 2423: 2422: 2418: 2417: 2412: 2396: 2395: 2394: 2390: 2389: 2340: 2338: 2337: 2332: 2330: 2320: 2319: 2318: 2283: 2268: 2263: 2262: 2247: 2232: 2231: 2230: 2200:(error ≤ 0.06%). 2199: 2178:(error ≤ 0.05%). 2177: 2146: 2115: 2092: 2088: 2077:= 243.5 °C. 2050:= 234.5 °C. 2030: 2028: 2027: 2022: 2020: 2013: 2011: 2007: 1990: 1989: 1973: 1969: 1952: 1951: 1938: 1933: 1931: 1930: 1926: 1925: 1920: 1910: 1909: 1908: 1891: 1889: 1884: 1876: 1856: 1855: 1851: 1850: 1845: 1835: 1834: 1833: 1816: 1814: 1809: 1801: 1784: 1779: 1777: 1776: 1771: 1761: 1760: 1759: 1748: 1733: 1732: 1727: 1717: 1716: 1715: 1704: 1692: 1683: 1682: 1666: 1662: 1661: 1660: 1659: 1655: 1653: 1639: 1633: 1629: 1628: 1620: 1602: 1597: 1589: 1566: 1549: 1548: 1547: 1530: 1529: 1528: 1524: 1522: 1508: 1502: 1498: 1497: 1489: 1452: 1451: 1450: 1390: 1388: 1387: 1382: 1380: 1373: 1371: 1370: 1365: 1355: 1354: 1353: 1342: 1327: 1326: 1321: 1311: 1310: 1309: 1298: 1286: 1277: 1276: 1275: 1258: 1254: 1253: 1252: 1251: 1230: 1226: 1225: 1224: 1223: 1196: 1195: 1194: 1166: 1165: 1164: 1151: 1150: 1149: 1133: 1129: 1128: 1124: 1084: 1083: 1082: 1072: 1067: 1059: 1041: 1040: 1039: 1022: 1021: 1019: 1008: 1000: 979: 978: 977: 967: 965: 954: 936: 935: 934: 826: 824: 823: 818: 816: 809: 807: 803: 776: 772: 748: 739: 738: 737: 720: 718: 707: 699: 694: 690: 685: 677: 655: 505:Over 80 °F 502:Over 27 °C 491: 490: 400:thermoregulation 372:carburetor icing 368:General aviation 248: 241: 234: 96:General concepts 63: 49: 48: 21: 3820: 3819: 3815: 3814: 3813: 3811: 3810: 3809: 3765: 3764: 3763: 3758: 3740: 3702: 3652: 3596: 3574: 3554: 3509: 3464: 3411: 3345: 3342: 3304: 3299: 3298: 3288: 3286: 3280: 3276: 3236: 3232: 3223: 3221: 3217: 3186: 3180: 3176: 3166: 3164: 3163:on May 26, 2012 3155: 3154: 3150: 3143: 3139: 3130: 3128: 3124: 3093: 3087: 3083: 3074: 3070: 3060: 3058: 3028: 3024: 3015: 3013: 3012:. 4 August 2015 3004: 3003: 2999: 2989: 2987: 2980:Washington Post 2974: 2973: 2969: 2938: 2934: 2925: 2923: 2915: 2914: 2910: 2900: 2898: 2889: 2888: 2884: 2874: 2872: 2868: 2857: 2853: 2852: 2848: 2839: 2837: 2830: 2826: 2817: 2816: 2812: 2797: 2796: 2792: 2782: 2780: 2772: 2771: 2767: 2757: 2755: 2753:Chicago Tribune 2745: 2738: 2733:. 25 June 2009. 2725: 2724: 2720: 2713: 2697: 2693: 2688:. 25 June 2009. 2680: 2679: 2675: 2666: 2665: 2661: 2656: 2633:Carburetor heat 2624: 2588: 2567: 2566: 2546: 2542: 2538: 2537: 2533: 2518: 2516: 2515: 2514: 2513: 2509: 2508: 2504: 2492: 2479: 2471: 2468: 2467: 2451: 2444: 2440: 2428: 2413: 2411: 2410: 2409: 2408: 2404: 2397: 2385: 2381: 2377: 2376: 2372: 2368: 2366: 2363: 2362: 2328: 2327: 2314: 2313: 2309: 2284: 2276: 2273: 2272: 2255: 2248: 2246: 2233: 2226: 2225: 2221: 2217: 2215: 2212: 2211: 2207: 2193: 2171: 2140: 2109: 2090: 2082: 2018: 2017: 2000: 1985: 1981: 1974: 1962: 1947: 1943: 1939: 1937: 1898: 1897: 1893: 1892: 1890: 1877: 1875: 1874: 1870: 1857: 1823: 1822: 1818: 1817: 1815: 1802: 1800: 1799: 1795: 1785: 1783: 1755: 1754: 1750: 1749: 1747: 1734: 1711: 1710: 1706: 1705: 1703: 1693: 1691: 1684: 1678: 1674: 1671: 1670: 1643: 1638: 1634: 1619: 1612: 1608: 1607: 1603: 1590: 1588: 1587: 1583: 1570: 1559: 1543: 1542: 1538: 1535: 1534: 1512: 1507: 1503: 1488: 1481: 1477: 1476: 1472: 1462: 1440: 1439: 1435: 1431: 1429: 1426: 1425: 1399: 1378: 1377: 1349: 1348: 1344: 1343: 1341: 1328: 1305: 1304: 1300: 1299: 1297: 1287: 1285: 1278: 1271: 1270: 1266: 1263: 1262: 1247: 1246: 1242: 1235: 1231: 1219: 1218: 1214: 1204: 1200: 1181: 1180: 1176: 1160: 1159: 1155: 1145: 1144: 1140: 1131: 1130: 1117: 1104: 1100: 1078: 1077: 1073: 1060: 1058: 1051: 1035: 1034: 1030: 1027: 1026: 1009: 1001: 999: 995: 973: 972: 968: 958: 953: 946: 930: 929: 925: 921: 919: 916: 915: 912:degrees Celsius 909: 903:" temperature, 898: 883: 872: 814: 813: 796: 777: 765: 749: 747: 740: 733: 732: 728: 725: 724: 708: 700: 698: 678: 676: 672: 659: 648: 632: 630: 627: 626: 616: 608: 594: 508:73% and higher 483:Devices called 481: 464: 395: 310: 252: 223: 164: 91: 35: 28: 23: 22: 15: 12: 11: 5: 3818: 3808: 3807: 3802: 3797: 3795:Psychrometrics 3792: 3787: 3782: 3777: 3760: 3759: 3757: 3756: 3750: 3748: 3742: 3741: 3739: 3738: 3733: 3728: 3723: 3718: 3712: 3710: 3704: 3703: 3701: 3700: 3695: 3690: 3685: 3680: 3675: 3673:Vapor pressure 3670: 3665: 3660: 3655: 3650: 3643: 3634: 3629: 3624: 3619: 3614: 3609: 3604: 3599: 3594: 3587: 3582: 3577: 3572: 3564: 3562: 3556: 3555: 3553: 3552: 3547: 3542: 3537: 3532: 3527: 3522: 3517: 3512: 3507: 3500: 3495: 3490: 3485: 3480: 3474: 3472: 3466: 3465: 3463: 3462: 3457: 3452: 3447: 3442: 3437: 3432: 3427: 3421: 3419: 3413: 3412: 3410: 3409: 3404: 3399: 3394: 3389: 3384: 3379: 3374: 3369: 3364: 3359: 3353: 3351: 3347: 3346: 3341: 3340: 3333: 3326: 3318: 3312: 3311: 3303: 3302:External links 3300: 3297: 3296: 3274: 3253:(2): 225–233. 3230: 3174: 3148: 3137: 3081: 3068: 3042:(2): 225–234. 3022: 2997: 2967: 2932: 2908: 2882: 2846: 2824: 2810: 2790: 2765: 2736: 2718: 2711: 2691: 2673: 2658: 2657: 2655: 2652: 2651: 2650: 2645: 2643:Psychrometrics 2640: 2635: 2630: 2623: 2620: 2587: 2584: 2565: 2561: 2554: 2549: 2545: 2541: 2536: 2532: 2526: 2521: 2512: 2507: 2500: 2497: 2491: 2488: 2485: 2482: 2480: 2477: 2474: 2470: 2469: 2466: 2462: 2457: 2454: 2450: 2447: 2443: 2436: 2433: 2427: 2421: 2416: 2407: 2403: 2400: 2398: 2393: 2388: 2384: 2380: 2375: 2371: 2370: 2326: 2323: 2317: 2312: 2308: 2305: 2302: 2299: 2296: 2293: 2290: 2287: 2285: 2282: 2279: 2275: 2274: 2271: 2266: 2261: 2258: 2254: 2251: 2245: 2242: 2239: 2236: 2234: 2229: 2224: 2220: 2219: 2206: 2203: 2202: 2201: 2179: 2149: 2148: 2118: 2117: 2079: 2078: 2052: 2051: 2016: 2010: 2006: 2003: 1999: 1996: 1993: 1988: 1984: 1980: 1977: 1972: 1968: 1965: 1961: 1958: 1955: 1950: 1946: 1942: 1936: 1929: 1923: 1919: 1916: 1913: 1907: 1904: 1901: 1896: 1887: 1883: 1880: 1873: 1869: 1866: 1863: 1860: 1854: 1848: 1844: 1841: 1838: 1832: 1829: 1826: 1821: 1812: 1808: 1805: 1798: 1794: 1791: 1788: 1782: 1774: 1770: 1767: 1764: 1758: 1753: 1746: 1743: 1740: 1737: 1730: 1726: 1723: 1720: 1714: 1709: 1702: 1699: 1696: 1690: 1687: 1685: 1681: 1677: 1673: 1672: 1669: 1665: 1658: 1652: 1649: 1646: 1642: 1637: 1632: 1626: 1623: 1618: 1615: 1611: 1606: 1600: 1596: 1593: 1586: 1582: 1579: 1576: 1573: 1571: 1569: 1565: 1562: 1558: 1555: 1552: 1546: 1541: 1537: 1536: 1533: 1527: 1521: 1518: 1515: 1511: 1506: 1501: 1495: 1492: 1487: 1484: 1480: 1475: 1471: 1468: 1465: 1463: 1461: 1458: 1455: 1449: 1446: 1443: 1438: 1434: 1433: 1397: 1376: 1368: 1364: 1361: 1358: 1352: 1347: 1340: 1337: 1334: 1331: 1324: 1320: 1317: 1314: 1308: 1303: 1296: 1293: 1290: 1284: 1281: 1279: 1274: 1269: 1265: 1264: 1261: 1257: 1250: 1245: 1241: 1238: 1234: 1229: 1222: 1217: 1213: 1210: 1207: 1203: 1199: 1193: 1190: 1187: 1184: 1179: 1175: 1172: 1169: 1163: 1158: 1154: 1148: 1143: 1139: 1136: 1134: 1132: 1127: 1123: 1120: 1116: 1113: 1110: 1107: 1103: 1099: 1096: 1093: 1090: 1087: 1081: 1076: 1070: 1066: 1063: 1057: 1054: 1052: 1050: 1047: 1044: 1038: 1033: 1029: 1028: 1025: 1018: 1015: 1012: 1007: 1004: 998: 994: 991: 988: 985: 982: 976: 971: 964: 961: 957: 952: 949: 947: 945: 942: 939: 933: 928: 924: 923: 907: 896: 881: 870: 858:, also called 852:vapor pressure 812: 806: 802: 799: 795: 792: 789: 786: 783: 780: 775: 771: 768: 764: 761: 758: 755: 752: 746: 743: 741: 736: 731: 727: 726: 723: 717: 714: 711: 706: 703: 697: 693: 688: 684: 681: 675: 671: 668: 665: 662: 660: 658: 654: 651: 647: 644: 641: 638: 635: 634: 614: 593: 590: 587: 586: 585:25% and lower 583: 580: 576: 575: 572: 571:50–54 °F 569: 568:10–12 °C 565: 564: 561: 560:55–59 °F 558: 557:13–16 °C 554: 553: 550: 549:60–64 °F 547: 546:16–18 °C 543: 542: 539: 538:65–69 °F 536: 535:18–21 °C 532: 531: 528: 527:70–74 °F 525: 524:21–24 °C 521: 520: 517: 516:75–79 °F 514: 513:24–26 °C 510: 509: 506: 503: 499: 498: 495: 480: 477: 476: 475: 463: 460: 394: 391: 350:supersaturated 309: 306: 296:is formed via 254: 253: 251: 250: 243: 236: 228: 225: 224: 222: 221: 212: 207: 206: 205: 195: 193:Water activity 190: 185: 180: 174: 171: 170: 166: 165: 163: 162: 157: 152: 150:Avogadro's law 147: 142: 132: 127: 122: 117: 112: 107: 101: 98: 97: 93: 92: 90: 89: 87:Psychrometrics 84: 79: 73: 70: 69: 65: 64: 56: 55: 26: 9: 6: 4: 3: 2: 3817: 3806: 3803: 3801: 3798: 3796: 3793: 3791: 3788: 3786: 3783: 3781: 3778: 3776: 3773: 3772: 3770: 3755: 3752: 3751: 3749: 3747: 3743: 3737: 3734: 3732: 3729: 3727: 3726:Barotropicity 3724: 3722: 3719: 3717: 3714: 3713: 3711: 3709: 3705: 3699: 3696: 3694: 3691: 3689: 3686: 3684: 3681: 3679: 3676: 3674: 3671: 3669: 3666: 3664: 3661: 3659: 3656: 3654: 3649: 3644: 3642: 3640: 3635: 3633: 3630: 3628: 3625: 3623: 3620: 3618: 3615: 3613: 3610: 3608: 3605: 3603: 3600: 3598: 3593: 3588: 3586: 3583: 3581: 3578: 3576: 3571: 3566: 3565: 3563: 3561: 3557: 3551: 3548: 3546: 3543: 3541: 3538: 3536: 3533: 3531: 3528: 3526: 3523: 3521: 3518: 3516: 3513: 3511: 3506: 3501: 3499: 3496: 3494: 3491: 3489: 3486: 3484: 3481: 3479: 3476: 3475: 3473: 3471: 3467: 3461: 3458: 3456: 3455:Precipitation 3453: 3451: 3448: 3446: 3443: 3441: 3438: 3436: 3433: 3431: 3428: 3426: 3423: 3422: 3420: 3418: 3414: 3408: 3405: 3403: 3400: 3398: 3395: 3393: 3390: 3388: 3385: 3383: 3380: 3378: 3375: 3373: 3370: 3368: 3365: 3363: 3360: 3358: 3355: 3354: 3352: 3348: 3339: 3334: 3332: 3327: 3325: 3320: 3319: 3316: 3309: 3306: 3305: 3289:September 30, 3285: 3278: 3269: 3264: 3260: 3256: 3252: 3248: 3244: 3240: 3234: 3220:on 2016-03-04 3216: 3212: 3208: 3204: 3200: 3196: 3192: 3185: 3178: 3162: 3158: 3152: 3146: 3141: 3127:on 2012-09-15 3123: 3119: 3115: 3111: 3107: 3103: 3099: 3092: 3085: 3079: 3078: 3072: 3057: 3053: 3049: 3045: 3041: 3037: 3033: 3026: 3011: 3007: 3001: 2985: 2981: 2977: 2971: 2963: 2959: 2955: 2951: 2947: 2943: 2936: 2922: 2918: 2912: 2896: 2892: 2886: 2867: 2863: 2856: 2850: 2835: 2828: 2820: 2814: 2806: 2805: 2800: 2794: 2779: 2775: 2769: 2754: 2750: 2743: 2741: 2732: 2728: 2727:"Frost Point" 2722: 2714: 2708: 2704: 2703: 2695: 2687: 2683: 2677: 2669: 2663: 2659: 2649: 2646: 2644: 2641: 2639: 2636: 2634: 2631: 2629: 2626: 2625: 2619: 2617: 2613: 2609: 2605: 2601: 2597: 2593: 2583: 2580: 2563: 2559: 2547: 2543: 2534: 2530: 2519: 2510: 2505: 2498: 2495: 2489: 2486: 2483: 2481: 2464: 2460: 2448: 2445: 2441: 2434: 2431: 2425: 2414: 2405: 2401: 2399: 2386: 2382: 2373: 2359: 2357: 2356: 2348: 2344: 2341: 2324: 2310: 2306: 2303: 2297: 2294: 2291: 2288: 2286: 2269: 2264: 2252: 2249: 2243: 2240: 2237: 2235: 2222: 2197: 2191: 2187: 2183: 2180: 2175: 2169: 2165: 2161: 2158: 2157: 2156: 2154: 2151:Also, in the 2144: 2138: 2134: 2130: 2127: 2126: 2125: 2123: 2113: 2107: 2103: 2099: 2096: 2095: 2094: 2086: 2076: 2072: 2068: 2065: 2064: 2063: 2061: 2057: 2049: 2045: 2041: 2037: 2034: 2033: 2032: 2014: 1997: 1994: 1986: 1982: 1978: 1975: 1959: 1956: 1948: 1944: 1940: 1934: 1927: 1921: 1914: 1902: 1894: 1885: 1871: 1867: 1864: 1861: 1858: 1852: 1846: 1839: 1827: 1819: 1810: 1796: 1792: 1789: 1786: 1780: 1772: 1765: 1751: 1744: 1741: 1738: 1735: 1728: 1721: 1707: 1700: 1697: 1694: 1688: 1686: 1679: 1675: 1667: 1663: 1656: 1650: 1647: 1644: 1640: 1635: 1630: 1624: 1621: 1616: 1613: 1609: 1604: 1598: 1584: 1580: 1577: 1574: 1572: 1556: 1553: 1539: 1531: 1525: 1519: 1516: 1513: 1509: 1504: 1499: 1493: 1490: 1485: 1482: 1478: 1473: 1469: 1466: 1464: 1456: 1444: 1436: 1423: 1419: 1415: 1411: 1407: 1403: 1396: 1391: 1374: 1366: 1359: 1345: 1338: 1335: 1332: 1329: 1322: 1315: 1301: 1294: 1291: 1288: 1282: 1280: 1267: 1259: 1255: 1243: 1239: 1236: 1232: 1227: 1215: 1211: 1208: 1205: 1201: 1197: 1177: 1173: 1170: 1156: 1141: 1137: 1135: 1114: 1111: 1105: 1101: 1097: 1094: 1088: 1074: 1068: 1055: 1053: 1045: 1031: 1023: 1016: 1013: 1010: 1005: 1002: 996: 992: 989: 983: 969: 955: 950: 948: 940: 926: 913: 906: 902: 895: 891: 887: 880: 876: 869: 865: 861: 857: 854:(in units of 853: 849: 844: 842: 838: 834: 831:= 17.625 and 830: 810: 793: 790: 784: 781: 778: 762: 759: 753: 750: 744: 742: 729: 721: 715: 712: 709: 704: 701: 695: 691: 686: 673: 669: 666: 663: 661: 645: 642: 636: 624: 620: 613: 607: 598: 584: 581: 578: 577: 573: 570: 567: 566: 562: 559: 556: 555: 551: 548: 545: 544: 540: 537: 534: 533: 529: 526: 523: 522: 518: 515: 512: 511: 507: 504: 501: 500: 496: 492: 489: 486: 473: 469: 466: 465: 459: 457: 453: 449: 445: 441: 437: 432: 428: 425: 419: 417: 413: 408: 404: 401: 390: 386: 384: 381: 377: 373: 369: 365: 361: 357: 355: 351: 347: 343: 339: 335: 331: 327: 323: 318: 315: 305: 303: 299: 295: 291: 286: 284: 279: 277: 273: 269: 265: 261: 249: 244: 242: 237: 235: 230: 229: 227: 226: 220: 216: 213: 211: 208: 204: 201: 200: 199: 196: 194: 191: 189: 186: 184: 181: 179: 176: 175: 173: 172: 168: 167: 161: 158: 156: 153: 151: 148: 146: 143: 141: 137: 133: 131: 128: 126: 123: 121: 118: 116: 113: 111: 110:Concentration 108: 106: 103: 102: 100: 99: 95: 94: 88: 85: 83: 80: 78: 75: 74: 72: 71: 67: 66: 62: 58: 57: 54: 51: 50: 44: 39: 33: 19: 3647: 3638: 3632:Mixing ratio 3607:Haines Index 3591: 3569: 3567: 3504: 3417:Condensation 3287:. Retrieved 3282:Haby, Jeff. 3277: 3250: 3246: 3233: 3222:. Retrieved 3215:the original 3194: 3190: 3177: 3165:. Retrieved 3161:the original 3151: 3140: 3129:. Retrieved 3122:the original 3101: 3097: 3084: 3076: 3071: 3059:. Retrieved 3039: 3035: 3025: 3014:. Retrieved 3009: 3000: 2988:. Retrieved 2979: 2970: 2945: 2941: 2935: 2924:. Retrieved 2920: 2911: 2899:. Retrieved 2895:the original 2885: 2873:. Retrieved 2866:the original 2861: 2849: 2838:. Retrieved 2827: 2818: 2813: 2802: 2793: 2781:. Retrieved 2777: 2768: 2756:. Retrieved 2752: 2730: 2721: 2701: 2694: 2685: 2676: 2662: 2628:Bubble point 2604:ice crystals 2589: 2581: 2360: 2353: 2350: 2346: 2342: 2208: 2195: 2189: 2185: 2181: 2176:≤ 50 °C 2173: 2167: 2163: 2159: 2152: 2150: 2145:≤ 60 °C 2142: 2136: 2132: 2128: 2121: 2119: 2114:≤ 60 °C 2111: 2105: 2101: 2097: 2084: 2080: 2074: 2070: 2066: 2059: 2053: 2047: 2043: 2039: 2035: 1421: 1413: 1409: 1405: 1401: 1394: 1392: 904: 893: 889: 885: 878: 874: 867: 863: 860:hectopascals 845: 840: 836: 832: 828: 618: 611: 609: 482: 467: 433: 429: 420: 409: 405: 396: 387: 366: 362: 358: 324:at constant 319: 311: 289: 287: 280: 259: 257: 198:H. indicator 188:Mixing ratio 145:Liquid water 76: 3800:Temperature 3721:Baroclinity 3568:Dew point ( 3560:Temperature 3460:Water vapor 2875:15 February 2799:"dew point" 2783:15 February 2682:"Dew Point" 2616:supercooled 2608:sublimation 2596:water vapor 2586:Frost point 2198:≤ 0 °C 485:hygrometers 479:Measurement 440:subtropical 302:cloud point 290:frost point 264:temperature 125:Evaporation 3769:Categories 3698:Wind chill 3612:Heat index 3470:Convection 3407:Wind shear 3392:Visibility 3372:Lapse rate 3224:2016-01-15 3131:2012-07-04 3016:2023-12-28 2926:2020-01-20 2840:2009-08-20 2758:24 January 2654:References 2188:= 17.966, 2166:= 17.368, 2042:= 18.678, 604:See also: 494:Dew point 414:also uses 383:cloud base 380:cumuliform 298:deposition 210:Hygrometer 178:Heat index 155:Nucleation 3397:Vorticity 3377:Lightning 3362:Advection 3167:7 October 2901:March 19, 2600:deposited 2548:∘ 2531:− 2520:∘ 2490:− 2484:≈ 2449:− 2426:− 2415:∘ 2402:≈ 2387:∘ 2307:− 2295:− 2289:≈ 2253:− 2244:− 2238:≈ 2194:−40 °C ≤ 2135:= 17.27, 2110:−45 °C ≤ 2104:= 17.62, 2083:−30 °C ≤ 2073:= 17.67, 1983:γ 1979:− 1945:γ 1868:⁡ 1862:− 1793:⁡ 1745:⁡ 1739:− 1701:⁡ 1617:− 1581:⁡ 1540:γ 1486:− 1339:⁡ 1333:− 1295:⁡ 1240:− 1171:− 1138:≈ 1106:γ 856:millibars 848:saturated 785:γ 782:− 754:γ 670:⁡ 637:γ 444:Singapore 260:dew point 77:Dew point 3746:Velocity 3708:Pressure 3622:Humidity 3525:Helicity 3367:Buoyancy 3061:15 March 2984:Archived 2622:See also 901:wet-bulb 436:tropical 308:Humidity 283:humidity 272:condense 268:moisture 140:Pressure 18:Dewpoint 3617:Humidex 3530:K Index 3350:General 3255:Bibcode 3199:Bibcode 3106:Bibcode 3044:Bibcode 2950:Bibcode 2862:Vaisala 2610:). The 2172:0 °C ≤ 2141:0 °C ≤ 1212:0.00115 1198:0.00066 899:, and " 574:26–30% 563:31–36% 552:37–43% 541:44–51% 530:52–61% 519:62–72% 472:Dhahran 456:Chicago 138:)  115:Density 2990:3 July 2709:  2598:to be 2594:, for 2087:≤ 35°C 2031:where 850:water 827:where 452:London 3780:Gases 3425:Cloud 3218:(PDF) 3187:(PDF) 3125:(PDF) 3094:(PDF) 2869:(PDF) 2858:(PDF) 2612:frost 862:) at 448:Miami 346:cloud 344:or a 338:frost 294:frost 292:, as 3402:Wind 3291:2011 3169:2014 3063:2024 2992:2017 2903:2007 2877:2018 2785:2018 2760:2018 2707:ISBN 2089:and 2056:NOAA 897:mbar 839:and 438:and 374:and 330:rate 258:The 203:card 136:Atm. 3435:Fog 3263:doi 3207:doi 3114:doi 3102:108 3052:doi 2958:doi 2487:100 2446:100 2358:. 2292:100 2250:100 1886:100 1811:100 1599:100 1069:100 956:100 914:): 687:100 454:or 446:or 376:fog 342:fog 334:dew 322:air 276:dew 215:Dry 120:Dew 105:Air 3771:: 3261:. 3251:86 3249:. 3245:. 3205:. 3195:20 3193:. 3189:. 3112:. 3100:. 3096:. 3050:. 3040:86 3038:. 3034:. 3008:. 2982:. 2978:. 2956:. 2946:44 2944:. 2919:. 2860:. 2801:. 2776:. 2751:. 2739:^ 2729:. 2684:. 2496:25 2435:25 2124:. 2062:: 1865:ln 1790:ln 1742:ln 1698:ln 1578:ln 1424:: 1336:ln 1292:ln 894:BP 890:RH 866:, 667:ln 410:A 385:. 356:. 304:. 3653:) 3651:e 3648:θ 3641:) 3639:θ 3597:) 3595:e 3592:T 3575:) 3573:d 3570:T 3510:) 3508:c 3505:T 3337:e 3330:t 3323:v 3293:. 3271:. 3265:: 3257:: 3227:. 3209:: 3201:: 3171:. 3134:. 3116:: 3108:: 3065:. 3054:: 3046:: 3019:. 2994:. 2964:. 2960:: 2952:: 2929:. 2905:. 2879:. 2843:. 2787:. 2762:. 2715:. 2564:; 2560:) 2553:F 2544:, 2540:d 2535:T 2525:F 2511:T 2506:( 2499:9 2476:H 2473:R 2465:; 2461:) 2456:H 2453:R 2442:( 2432:9 2420:F 2406:T 2392:F 2383:, 2379:d 2374:T 2325:; 2322:) 2316:d 2311:T 2304:T 2301:( 2298:5 2281:H 2278:R 2270:; 2265:5 2260:H 2257:R 2241:T 2228:d 2223:T 2196:T 2190:c 2186:b 2182:a 2174:T 2168:c 2164:b 2160:a 2143:T 2137:c 2133:b 2129:a 2112:T 2106:c 2102:b 2098:a 2085:T 2075:c 2071:b 2067:a 2048:d 2044:c 2040:b 2036:a 2015:; 2009:) 2005:H 2002:R 1998:, 1995:T 1992:( 1987:m 1976:b 1971:) 1967:H 1964:R 1960:, 1957:T 1954:( 1949:m 1941:c 1935:= 1928:) 1922:a 1918:) 1915:T 1912:( 1906:m 1903:, 1900:s 1895:P 1882:H 1879:R 1872:( 1859:b 1853:) 1847:a 1843:) 1840:T 1837:( 1831:m 1828:, 1825:s 1820:P 1807:H 1804:R 1797:( 1787:c 1781:= 1773:a 1769:) 1766:T 1763:( 1757:a 1752:P 1736:b 1729:a 1725:) 1722:T 1719:( 1713:a 1708:P 1695:c 1689:= 1680:d 1676:T 1668:; 1664:) 1657:) 1651:T 1648:+ 1645:c 1641:T 1636:( 1631:) 1625:d 1622:T 1614:b 1610:( 1605:e 1595:H 1592:R 1585:( 1575:= 1568:) 1564:H 1561:R 1557:, 1554:T 1551:( 1545:m 1532:; 1526:) 1520:T 1517:+ 1514:c 1510:T 1505:( 1500:) 1494:d 1491:T 1483:b 1479:( 1474:e 1470:a 1467:= 1460:) 1457:T 1454:( 1448:m 1445:, 1442:s 1437:P 1422:d 1410:T 1408:( 1406:γ 1402:T 1400:( 1398:s 1395:P 1375:; 1367:a 1363:) 1360:T 1357:( 1351:a 1346:P 1330:b 1323:a 1319:) 1316:T 1313:( 1307:a 1302:P 1289:c 1283:= 1273:d 1268:T 1260:; 1256:) 1249:w 1244:T 1237:T 1233:( 1228:) 1221:w 1216:T 1209:+ 1206:1 1202:( 1192:r 1189:a 1186:b 1183:m 1178:P 1174:B 1168:) 1162:w 1157:T 1153:( 1147:s 1142:P 1126:) 1122:H 1119:R 1115:, 1112:T 1109:( 1102:e 1098:a 1095:= 1092:) 1089:T 1086:( 1080:s 1075:P 1065:H 1062:R 1056:= 1049:) 1046:T 1043:( 1037:a 1032:P 1024:; 1017:T 1014:+ 1011:c 1006:T 1003:b 997:e 993:a 990:= 987:) 984:T 981:( 975:a 970:P 963:H 960:R 951:= 944:) 941:T 938:( 932:s 927:P 908:w 905:T 886:T 884:( 882:a 879:P 875:T 873:( 871:s 868:P 864:T 841:c 837:b 833:c 829:b 811:; 805:) 801:H 798:R 794:, 791:T 788:( 779:b 774:) 770:H 767:R 763:, 760:T 757:( 751:c 745:= 735:d 730:T 722:; 716:T 713:+ 710:c 705:T 702:b 696:+ 692:) 683:H 680:R 674:( 664:= 657:) 653:H 650:R 646:, 643:T 640:( 619:T 615:d 612:T 247:e 240:t 233:v 217:/ 134:( 34:. 20:)

Index

Dewpoint
Hydrocarbon dew point

sea-level pressure
Humidity and hygrometry

Dew point
Dew point depression
Psychrometrics
Air
Concentration
Density
Dew
Evaporation
Humidity buffering
Atm.
Pressure
Liquid water
Avogadro's law
Nucleation
Thermodynamic equilibrium
Heat index
Sat. vap. density
Mixing ratio
Water activity
H. indicator
card
Hygrometer
Dry
Wet-bulb temperature

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