Data and API

Daily solar radiation and weather for 34 localities, 1981-2025 (NASA POWER)

NASA POWERDaily1981 – 202534 locationsSatellite or reanalysisCC BY 4.0

Full-depth daily series for the 34 prefecture seats of Guinea and Kaloum: global, direct and diffuse irradiation, clearness index, albedo, temperature, humidity, wind at 2 m and 10 m, corrected precipitation.

Radiation from CERES SYN1deg and FLASHFlux on a 1° grid; weather from MERRA-2. Weather starts in 1981, global and diffuse radiation in 1984, direct radiation, clearness index and albedo in 2001 (start of CERES): earlier cells are empty. Kindia and Mamou share the same pixel.

Coverage by measure

Years with values for each measure; not all of them start at the same time at the producer.

  • GHIkWh/m²/day1984–2025
  • DNIkWh/m²/day2001–2025
  • DHIkWh/m²/day1984–2025
  • Clearness index2001–2025
  • Albedo2001–2025
  • Temperature 2 m°C1981–2025
  • Humidity 2 m%1981–2025
  • Wind 2 mm/s1981–2025
  • Wind 10 mm/s1981–2025
  • Precipitationmm/day1981–2025

Content

Period
January 1, 1981 to December 31, 2025
Time step
Daily
Coverage
34 locations
Size
558,824 rows, 14 columns
Kind of values
Satellite or reanalysis
Themes
Solar radiation, Weather

Provenance and licence

Source
NASA POWER, NASA Langley Research Center
Publisher
Kuma Science
License
CC BY 4.0
DOI
10.5281/zenodo.21051754
Distribution
RDS Guinea (Zenodo DOI), GitHub repository
Last updated
August 12, 2026

Required attribution. These data were obtained from the NASA Langley Research Center (LaRC) POWER Project funded through the NASA Earth Science / Applied Science Program.

Column dictionary

Profile computed over the 558,824 rows of the published file.

ColumnUnitFilledValuesDistribution
Locality codelocalitetext100%34 distinct valuesBeyla, Boffa, Boké…
Localitylocalite_nomtext100%34 distinct valuesBeyla, Boffa, Boke…
Regionregiontext100%8 distinct valuesNzérékoré, Boké, Kankan…
Datedatedate100%1981-01-01 to 2025-12-31
GHIghikWh/m²/day93%0.5400 to 8.1017, mean 5.4033
DNIdnikWh/m²/day56%0.0000 to 8.9114, mean 3.3256
DHIdhikWh/m²/day93%0.1968 to 6.4656, mean 2.8332
Clearness indexktdecimal56%0.06 to 0.78, mean 0.55
Albedoalbedodecimal56%0.01 to 0.32, mean 0.13
Temperature 2 mt2m°C100%14.13 to 37.74, mean 25.45
Humidity 2 mrh2m%100%5.39 to 97.45, mean 68.32
Wind 2 mvent_2mm/s100%0.22 to 8.41, mean 1.74
Wind 10 mvent_10mm/s100%0.44 to 10.58, mean 2.63
Precipitationprecipitationmm/day100%0.00 to 1,021.20, mean 5.76

Source files

FileRowsSizeSHA-256
data/nasa-power/journalier_1981_1990.csv124,1687.4 MB6dcf360a1f73e84c8795e1b906badbaa7ce88a766063909e82ee5b4e7dd74db8
data/nasa-power/journalier_1991_2000.csv124,2027.8 MB9e11618540f822dcb84963bbc3b62f0505e2cce05255f47142e6f2cdd24161ae
data/nasa-power/journalier_2001_2010.csv124,1689.5 MB35c99247757aec8f5e016db9d2e04ade5bfc42b593ab0a8e8cd5eb829792de41
data/nasa-power/journalier_2011_2020.csv124,2029.5 MB3aa7572c137be29c62510a24517f59d395a495de5f1db3cb2c3dcb2264ab4c2b
data/nasa-power/journalier_2021_2025.csv62,0844.7 MBdaa5049165ec77f396a1f0d2814971f88381f93fd866511ac84a63bea731c334