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SAFARI 2000 AVHRR-derived Land Surface Temperature Maps, Africa, 1995-2000

Data Set Overview

Data setSAFARI 2000 AVHRR-derived Land Surface Temperature Maps, Africa, 1995-2000
DOI10.3334/ORNLDAAC/826
Release date2006-01-06
ProjectSAFARI 2000 (S2K)
Time Period1995-01-01 to 2000-12-31

Description

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.

Documentation

Data set reference document

Citation

Pinheiro, A.C. 2005. SAFARI 2000 AVHRR-derived Land Surface Temperature Maps, Africa, 1995-2000. ORNL DAAC, Oak Ridge, Tennessee, USA. http://dx.doi.org/10.3334/ORNLDAAC/826
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Project

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).

Companion Files

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  • AVHRR_LST_readme.pdf

Data Files

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Data File (Granule)File SizeDates
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

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Files related to this data set have been downloaded on 306 occasions since 2007-12-03, totaling 2110 files.