Data Set Overview
|Data set||SAFARI 2000 AVHRR-derived Land Surface Temperature Maps, Africa, 1995-2000|
|Project||SAFARI 2000 (S2K)|
|Time Period||1995-01-01 to 2000-12-31|
Land Surface Temperature (LST) is a key indicator of land surface states, and can provide information on surface-atmosphere heat and mass fluxes, vegetation water stress, and soil moisture. A daily, day and night, LST data set for continental Africa, including Madagascar, was derived from Advanced Very High Resolution Radiometer (AVHRR) Global Area Coverage (GAC; 4 km resolution) data for the 6-year lifetime of the NOAA-14 satellite (from 1995 to 2000) using a modified version of the Global Inventory Mapping and Monitoring System (GIMMS) (Tucker et al., 1994). The data were projected into Albers Equal Area and aggregated to 8 km spatial resolution. The data were cloud-filtered with CLAVR-1 algorithm (Stowe et al., 1999). The LST values were estimated with a split-window technique (Ulivieri et al., 1994) that takes advantage of differential absorption of the thermal infrared signal in bands 4 and 5. The emissivity of the surface was generated using a land cover classification map (Hansen et al., 2000) combined with the FAO soil map of Africa (FAO-UNESCO, 1977) and additional maps of tree, herbaceous, and bare soil percent cover (DeFries et al., 2000). Collateral products include cloud mask, time-of-scan, latitude and longitude, and land/water mask files.The data are in flat binary files. Each data file contains 1152 columns and 1152 rows, in signed integer format (2 bytes), with 8 km by 8 km spatial resolution. A unique map exists for each day and each night of the 6-year NOAA-14 lifetime. The data are best used to infer broad temporal and spatial trends rather than pixel-by-pixel values.
See our Data Citations and Acknowledgements policy for more information.
SAFARI 2000 (S2K): The SAFARI 2000 project was an international science initiative to study the linkages between land and atmosphere processes in the southern African region. In addition, SAFARI 2000 examined the relationship of biogenic, pyrogenic, and anthropogenic emissions and the consequences of their deposition to the functioning of the biogeophysical and biogeochemical systems of southern Africa. This initiative, which was conducted in 1999-2001, was built around a number of ongoing, already-funded activities by NASA, the international community, and African nations in the southern African region.
Project data set list for SAFARI 2000 (S2K).
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|Data File (Granule)||File Size||Dates|
|1995_DAY_CLD.zip||60.6 MB||1995-01-01 - 1995-12-31|
|1995_DAY_LSTIME.zip||87.7 MB||1995-01-01 - 1995-12-31|
|1995_DAY_LST_UL.zip||506.9 MB||1995-01-01 - 1995-12-31|
|1995_NIGHT_CLD.zip||34.8 MB||1995-01-01 - 1995-12-31|
|1995_NIGHT_LSTIME.zip||69.2 MB||1995-01-01 - 1995-12-31|
|1995_NIGHT_LST_UL.zip||463.0 MB||1995-01-01 - 1995-12-31|
|1996_DAY_CLD.zip||63.2 MB||1996-01-01 - 1996-12-31|
|1996_DAY_LSTIME.zip||90.6 MB||1996-01-01 - 1996-12-31|
|1996_DAY_LST_UL.zip||538.6 MB||1996-01-01 - 1996-12-31|
|1996_NIGHT_CLD.zip||36.7 MB||1996-01-01 - 1996-12-31|
|1996_NIGHT_LSTIME.zip||69.1 MB||1996-01-01 - 1996-12-31|
|1996_NIGHT_LST_UL.zip||494.4 MB||1996-01-01 - 1996-12-31|
|1997_DAY_CLD.zip||62.7 MB||1997-01-01 - 1997-12-31|
|1997_DAY_LSTIME.zip||87.8 MB||1997-01-01 - 1997-12-31|
|1997_DAY_LST_UL.zip||536.5 MB||1997-01-01 - 1997-12-31|
|1997_NIGHT_CLD.zip||36.7 MB||1997-01-01 - 1997-12-31|
|1997_NIGHT_LSTIME.zip||66.4 MB||1997-01-01 - 1997-12-31|
|1997_NIGHT_LST_UL.zip||492.4 MB||1997-01-01 - 1997-12-31|
|africa_albers.lat||2.7 MB||1995-01-01 - 2000-12-31|
|africa_albers_8bit.mask||1.3 MB||1995-01-01 - 2000-12-31|
|africa_albers.lon||2.7 MB||1995-01-01 - 2000-12-31|
|1998_DAY_CLD.zip||63.4 MB||1998-01-01 - 1998-12-31|
|1998_DAY_LSTIME.zip||89.9 MB||1998-01-01 - 1998-12-31|
|1998_DAY_LST_UL.zip||535.9 MB||1998-01-01 - 1998-12-31|
|1998_NIGHT_CLD.zip||35.5 MB||1998-01-01 - 1998-12-31|
|1998_NIGHT_LSTIME.zip||66.0 MB||1998-01-01 - 1998-12-31|
|1998_NIGHT_LST_UL.zip||495.1 MB||1998-01-01 - 1998-12-31|
|1999_DAY_CLD.zip||62.5 MB||1999-01-01 - 1999-12-31|
|1999_DAY_LSTIME.zip||86.8 MB||1999-01-01 - 1999-12-31|
|1999_DAY_LST_UL.zip||519.1 MB||1999-01-01 - 1999-12-31|
|1999_NIGHT_CLD.zip||34.3 MB||1999-01-01 - 1999-12-31|
|1999_NIGHT_LSTIME.zip||66.0 MB||1999-01-01 - 1999-12-31|
|1999_NIGHT_LST_UL.zip||471.5 MB||1999-01-01 - 1999-12-31|
|2000_DAY_CLD.zip||63.5 MB||2000-01-01 - 2000-12-31|
|2000_DAY_LSTIME.zip||84.9 MB||2000-01-01 - 2000-12-31|
|2000_DAY_LST_UL.zip||522.3 MB||2000-01-01 - 2000-12-31|
|2000_NIGHT_CLD.zip||34.1 MB||2000-01-01 - 2000-12-31|
|2000_NIGHT_LSTIME.zip||59.7 MB||2000-01-01 - 2000-12-31|
|2000_NIGHT_LST_UL.zip||469.6 MB||2000-01-01 - 2000-12-31|
Files related to this data set have been downloaded on 306 occasions since 2007-12-03, totaling 2110 files.