CHIRTS-daily: Climate Hazards Center InfraRed Temperature with Stations daily temperature data product

UCSB-CHG/CHIRTS/DAILY
Dataset Availability
1983-01-01T00:00:00Z–2016-12-31T00:00:00Z
Dataset Provider
Earth Engine Snippet
ee.ImageCollection("UCSB-CHG/CHIRTS/DAILY")
Tags
chg climate daily era5 geophysical reanalysis temperature ucsb wind

Description

The Climate Hazards Center InfraRed Temperature with Stations daily temperature data product (CHIRTS-daily; Verdin et al. 2020) is a quasi global, high-resolution gridded dataset (0.05° × 0.05° resolution, 60°S - 70°N) that provides daily minimum (Tmin) and maximum 2-meter temperatures (Tmax) and four derived variables: saturation vapor pressure (SVP), vapor pressure deficit (VPD), relative humidity (RH), and heat index (HI). CHIRTS temperature products are designed to support analysis of temperature extremes and variability, especially in regions with a low density of station observations.

CHIRTS-daily is created by merging a high-quality, high-resolution monthly maximum temperature dataset, the Climate Hazards Center InfraRed Temperature with Stations monthly maximum temperature climate record (CHIRTSmax; Funk et al. 2019), with daily temperatures from the European Centre for Medium-Range Weather Forecasts (ECMWF) Reanalysis v5 (ERA5). The result is a high-resolution, daily temperature dataset that maintains spatio-temporal information from monthly CHIRTSmax and the daily and diurnal temperature variability from ERA5. Monthly CHIRTSmax are based on:

  1. A Tmax climatology constructed using geostatistical regressions and long-term averages of FAO station observations, ERA5 temperatures, and several other geographic predictors.

  2. Estimates of Tmax variability using approximately 15,000 in situ observations and high-resolution (0.05° × 0.05°) satellite observations. These data are from Berkeley Earth and Global Telecommunication System (GTS) station reports and cloud-screened GridSat geostationary satellite thermal infrared brightness temperatures.

Daily Tmax values are produced using downscaled ERA5 Tmax anomalies and high-resolution CHIRTSmax. Daily Tmin values are created by removing the downscaled ERA5 diurnal temperature range (Tmax - Tmin). Daily SVP, VPD, RH, and HI are computed using CHIRTS-daily Tmin and Tmax, alongside hourly ERA5 inputs for other meteorological variables (see Williams et al., 2024, for details). CHIRTS-daily, version 1, covers the period from 1983 to 2016.

Bands

Resolution
5566 meters

Bands

Name Units Min Max Description
minimum_temperature °C

The lowest air temperature recorded at 2 meters above the ground surface over a 24-hour period.
maximum_temperature °C 10* 40*

The highest air temperature recorded at 2 meters above the ground surface over a 24-hour period.
saturation_vapor_pressure kPa

The maximum amount of water vapor that the air can hold at a given temperature and pressure at 2 meters above ground.
vapor_pressure_deficit kPa

The difference between the saturation vapor pressure and the actual vapor pressure at 2 meters above ground.
relative_humidity %

The ratio of the actual amount of water vapor in the air to the maximum amount it could hold at that temperature and pressure (saturation vapor pressure) at 2 meters above ground.
heat_index °F

A measure of how hot it feels when temperature and humidity are combined.
* estimated min or max value

Terms of Use

Terms of Use

This datasets are in the public domain. To the extent possible under law, Chris Funk has waived all copyright and related or neighboring rights to Climate Hazards InfraRed Temperature with Stations daily temperature data product (CHIRTS-daily).

Citations

Citations:

  • Verdin, A., C. Funk, P. Peterson, M. Landsfeld, C. Tuholske, and Grace, K., 2020: Development and validation of the CHIRTS-daily quasi-global high-resolution daily temperature data set. Scientific Data, 7(1), 303. doi: 10.1038/s41597-020-00643-7

  • Funk, C., P. Peterson, S. Peterson, S. Shukla, F. Davenport, J. Michaelsen, K.R. Knapp, M. Landsfeld, G. Husak, L. Harrison, J. Rowland, M. Budde, A. Meiburg, T. Dinku, D. Pedreros, and N. Mata, 2019: A High-Resolution 1983-2016 Tmax Climate Data Record Based on Infrared Temperatures and Stations by the Climate Hazard Center. J. Climate, 32, 5639-5658. doi:10.1175/JCLI-D-18-0698.1

  • Williams, E., C. Funk, P. Peterson, and C. Tuholske (2024). High resolution climate change observations and projections for the evaluation of heat-related extremes. Scientific Data, 11(1), 261. doi: 10.1038/s41597-024-03074-w

DOIs

Explore with Earth Engine

Code Editor (JavaScript)

var dataset = ee.ImageCollection('UCSB-CHG/CHIRTS/DAILY')
                  .filter(ee.Filter.date('2016-05-01', '2016-05-03'));
var maximumTemperature = dataset.select('maximum_temperature');
var visParams = {
  min: 10,
  max: 30,
  palette: ['darkblue', 'blue', 'cyan', 'green', 'yellow', 'orange', 'red','darkred'],
};
Map.setCenter(-104.28, 46.07, 3);
Map.addLayer(maximumTemperature, visParams, 'Maximum temperature');
Open in Code Editor
The Climate Hazards Center InfraRed Temperature with Stations daily temperature data product (CHIRTS-daily; Verdin et al. 2020) is a quasi global, high-resolution gridded dataset (0.05° × 0.05° resolution, 60°S - 70°N) that provides daily minimum (Tmin) and maximum 2-meter temperatures (Tmax) and four derived variables: saturation vapor pressure (SVP), vapor pressure deficit …
UCSB-CHG/CHIRTS/DAILY, chg,climate,daily,era5,geophysical,reanalysis,temperature,ucsb,wind
1983-01-01T00:00:00Z/2016-12-31T00:00:00Z
-60.0 -180.0 70.0 180.0
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