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Vapor Pressure DeficitAll functions are free

Vapor Pressure Deficit

calculates saturated vapor pressure, actual vapor pressure and deficit.

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is based on the input air temperature and humidity, which is not equal to the VPD corresponding to the blade temperature.

Vapor Pressure Deficit: uses and methods

calculates saturated vapor pressure, actual vapor pressure and deficit.

Applicable scope and calculation boundary

is based on the input air temperature and humidity, which is not equal to the VPD corresponding to the blade temperature.

model and reference method

es=0.6108 exp(17.27T/(T+237.3)); VPD=es(1−RH)

model version: 1.1.0. The results are used for scientific research, exploration and teaching, please interpret according to the model conditions.

input parameters

air temperature(°C)
Value range: 0 – 50
relative humidity(%)
Value range: 0 – 100

How to use

  1. Load the example or enter data that matches the field description.
  2. Confirm units and models, run calculations and check diagnostics.
  3. Export charts, tables or results packages and record model versions.

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commercial application case

Industry Application · Independent Reproduction Example

Vapor Pressure Deficit

The facility agriculture team examines air dryness levels and climate control goals.

Public industry reference: Wageningen University & Research

The institution’s public research directions include: Greenhouse horticulture, crop models and agricultural environment. This link serves as a portal for field background and extended learning.

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on this site

  1. Load the default example of Vapor Pressure Deficit and check air temperature、relative humidity and its units.
  2. is calculated using es=0.6108 exp(17.27T/(T+237.3)); VPD=es(1−RH), and the results are compared after adjusting a single parameter.
  3. checks applicable conditions and diagnostics, and exports numerical tables, charts, and model versions for review.

Deliverables

calculates saturated vapor pressure, actual vapor pressure and deficit. delivers parameter records, calculation charts, and reproducible JSON result packages.

needs to be checked before landing

is based on the input air temperature and humidity, which is not equal to the VPD corresponding to the blade temperature.。

case is compiled for public industry purposes, and the reproduction steps are independent examples of this site; it does not mean that the above-mentioned institutions use or endorse this site, nor does it cite customer benefits that have not been publicly verified. The

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recommended by universities and research institutions

Agronomy & Climate

The following is the recommended reading order of this website organized by direction relevance, public research resources and learning portals. The number is the serial number recommended by the editor, not QS, THE or paper measurement ranking; it does not represent the overall strength of the institution.

  1. 01

    Wageningen University & Research

    Netherlands

    Greenhouse horticulture, crop models and agricultural environment。

    official website link accessibility check: 2026-10-03
  2. 02

    UC Davis · Department of Land, Air and Water Resources

    United States The

    Soil, hydrology, meteorology and agricultural water management。

    official website entrance; please refer to the current public page of the institution.
  3. 03

    USDA Agricultural Research Service

    United States The

    Crop water requirements, soil management and agricultural research。

    official website link accessibility check: 2026-10-03

catalog compiled on 2026-10-03. Link accessibility does not equate to verification of the latest papers, admissions, or program status; please check the institution's official website for specific research teams and opportunities.

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