About the data.

Data: Satellite Precipitation Estimates from CHIRPS and IMERG

Reference:

1. CHIRPS https://chc.ucsb.edu/data/chirps

2. IMERG https://gpm.nasa.gov/data/imerg

Source:

1. CHIRPS https://data.chc.ucsb.edu/products/CHIRPS-2.0/

2. IMERG https://gpm1.gesdisc.eosdis.nasa.gov/data/GPM_L3/GPM_3IMERGDF.06/

Spatial resolution:

1. CHIRPS: 0.05 deg ~ 5.6 km at equator.

2. IMERG: 0.1 deg ~ 11.1 km at equator

Temporal resolution:

1. CHIRPS, 1 Jan 1981 - Dekad 3, Sep 2020

   • Dekad

   • 1,3,6,9,12 and 24 months accumulation, rolling dekad.

   • 1,2,3,4 and 5 days accumulation, rolling daily

2. IMERG: 1 Jun 2000 - present

   • 1,2,3,4 and 5 days accumulation, rolling daily

Coverage:

1. CHIRPS: 50N-23.5S, 60E-180E

2. IMERG: 53N-23S, 59E-180E

Method:

• Rainfall accumulation calculate using GDAL “gdal_calc.py --calc=expression --outfile=out_filename [-A filename] [--A_band=n] [-B...-Z filename] [other_options]”

• Long-term statistics (39 years, 1981 - 2019) information calculate using Cell Statistics tools in ArcGIS Spatial Analyst Toolbox.

Unit:

Total milimeters (mm) for given time step, mm/day, mm/2days, mm/dekad, mm/1month, mm/3month, etc.

Format:

GeoTIFF (*.tif)

Projection:

EPSG:4326

Download.

Dekad rainfall.

CHIRPS (direct access from source)

https://data.chc.ucsb.edu/products/CHIRPS-2.0/global_dekad/

Statistics value (MAX, MEAN, MIN, STDev)

https://on.istan.to/3397Te0

6-months rainfall, rolling dekad.

CHIRPS

https://on.istan.to/398eWaE

Statistics value (MAX, MEAN, MIN, STDev)

https://on.istan.to/3fnVeZm

24-months rainfall, rolling dekad.

CHIRPS

https://on.istan.to/3l3kINa

Statistics value (MAX, MEAN, MIN, STDev)

https://on.istan.to/2URNFRp

3-days rainfall, rolling daily.

CHIRPS

https://on.istan.to/3nPrF5Y

IMERG

16-days rainfall. Following MODIS 16-days calendar.

CHIRPS

https://on.istan.to/399taI3

Statistics value (MAX, MEAN, MIN, STDev)

https://on.istan.to/2IZaiko

1-month rainfall, rolling dekad.

CHIRPS

https://on.istan.to/3lVuAd2

Statistics value (MAX, MEAN, MIN, STDev)

https://on.istan.to/36ZhqW1

9-months rainfall, rolling dekad.

CHIRPS

https://on.istan.to/2UTWo5q

Statistics value (MAX, MEAN, MIN, STDev)

https://on.istan.to/3nLBNwE

1-day rainfall.

CHIRPS (direct access from source)

https://data.chc.ucsb.edu/products/CHIRPS-2.0/global_daily/

IMERG - Final Run: https://on.istan.to/35VVtYP

IMERG - Late Run: https://on.istan.to/33bRfKD

4-days rainfall, rolling daily.

CHIRPS

https://on.istan.to/3kUixeI

IMERG

3-months rainfall, rolling dekad.

CHIRPS

https://on.istan.to/3frzlIY

Statistics value (MAX, MEAN, MIN, STDev)

https://on.istan.to/3fqrZW7

12-months rainfall, rolling dekad.

CHIRPS

https://on.istan.to/3nI2wds

Statistics value (MAX, MEAN, MIN, STDev)

https://on.istan.to/339bIjm

2-days rainfall, rolling daily.

CHIRPS

https://on.istan.to/37fSAS7

IMERG

5-days rainfall, rolling daily.

CHIRPS

https://on.istan.to/3kS4ztz

IMERG