Jurnal

Wet-Bulb Temperature from Pressure, Relative Humidity, and Air Temperature

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ABSTRACT: The algorithms currently in use for calculating the wet-bulb temperature from pressure, relative humidity, and air temperature have errors of a degree or more. Here, the equation for the thermodynamic wet-bulb temperature is derived using the Rankine�Kirchhoff approximations, which are highly accurate for meteorological and climatological applications. Likewise, equations are derived for the thermodynamic ice-bulb temperature and for the psychrometric wet-bulb and ice-bulb temperatures. The equations are fast to solve, requiring only a microsecond on a current laptop computer, and the results match empirical data to within hundredths of a degree. Furthermore, the equations reveal the existence of air temperatures and humidities that generate bistability: Evaporating liquid water is stable at a liquid temperature above freezing and, simultaneously, sublimating ice is stable at an ice temperature below freezing.

KEYWORDS: Evaporation; Humidity; Thermodynamics

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Ketersediaan

JUR00498.1

551.5710287 ROM w

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Informasi Detail

Judul Seri

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No. Panggil

551.5710287 ROM w

Penerbit

Boston, USA : American Meteorological Society., 2026

Deskripsi Fisik

Page(s): 285-298; Illus

Bahasa

English

ISBN/ISSN

1558-8432

Klasifikasi

551.5710287

Tipe Isi

text

Tipe Media

unspecified

Tipe Pembawa

volume

Edisi

Volume 65 (2026): Issue 2 (Feb 2026)

Subjek

Wet bulb temperature — Measurement
Hygrometry — Mathematical models
Atmospheric thermodynamics
Humidity — Charts, diagrams

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Pernyataan Tanggungjawab

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