2017-01-21T00:19:17Z http://mercury.ornl.gov/oai/provider

oai:mercury-ops2.ornl.gov:ornldaac_814 2017-01-20T09:44:41Z ORNLDAAC

s2k_mapss_mod04_aero SAFARI 2000 MAPSS MOD04_L2 Aerosol Summary Data for Southern Africa ICHOKU, C.; KAUFMAN, Y.J.; REMER, L.A. SAFARI 2000 MAPSS MOD04_L2 Aerosol Summary Data for Southern Africa 2005 Oak Ridge, Tennessee, U.S.A. Oak Ridge National Laboratory Distributed Active Archive Center Online Files doi:10.3334/ORNLDAAC/814 814

ABSTRACT: The Moderate Resolution Imaging Spectroradiometer (MODIS)Atmosphere Group develops remote sensing algorithms for deriving sets of atmospheric parameters from MODIS radiance data. These parameters can be integrated into conceptual and predictive global models. MODIS Atmosphere Products Subset Statistics (MAPSS) are generated over important locations around the world, as one of the ways to increase the scope of application of the MODIS atmospheric parameters. This MAPSS data set contains daily time series of the MODIS MOD04_L2 aerosol product over seventeen (17) AERONET sunphotometer measurement sites in southern Africa for the period February 26, 2000, through December 31, 2001. The process of generating the statistics involves identifying these locations on the MODIS MOD04_L2 product, extracting the values of the pixel corresponding to each coordinate point as well as surrounding pixels falling within a 50 x 50 km box centered on the coordinate point. The data files are stored as ASCII tables in comma-separated-value (.csv) format. There is one file per site per year for each of the following variables: cloud fraction (land); cloud fraction (ocean); particle effective radius (ocean); optical depth (land and ocean); optical depth (land, corrected); optical depth (ocean, effective average); and optical depth ratio (small ocean).

2000-02-26 2001-12-31 COMPLETE -28.248 -7.976 -14.415 32.905 ESIP Earth Science Information Partners Program EOSDIS Earth Observing System Data Information System TECHNICAL CONTACT ORNL DAAC User Services ORNL DAAC USER SERVICES OFFICE OAK RIDGE NATIONAL LABORATORY OAK RIDGE, TENNESSEE 37831 USA DIF AUTHOR ORNL DAAC User Services ornldaac@ornl.gov (865) 241-3952 (865) 574-4665

ORNL DAAC User Services Office

P.O. Box 2008, MS 6407

Oak Ridge National Laboratory

Oak Ridge Tennessee 37831-6407 USA 2005-10-03 ORNL_DAAC THE OAK RIDGE NATIONAL LABORATORY (ORNL) DISTRIBUTED ACTIVE ARCHIVE CENTER (DAAC) http://daac.ornl.gov/ 814 DATA CENTER CONTACT ORNL DAAC USER SERVICES ornldaac@ornl.gov +1(865)241-3952 +1(865)574-4665

ORNL DAAC USER SERVICES OFFICE

P.O. Box 2008, MS 6407

Oak Ridge National Laboratory

Oak Ridge Tennessee 37831-6407 USA EARTH SCIENCE ATMOSPHERE AEROSOLS AEROSOL OPTICAL DEPTH/THICKNESS EARTH SCIENCE ATMOSPHERE AEROSOLS AEROSOL PARTICLE PROPERTIES EARTH SCIENCE ATMOSPHERE CLOUDS CLOUD PROPERTIES MODIS TERRA EARTH SCIENCE AOT MODIS TERRA EOSDIS AERONET AEROSOL SAFARI 2000 OPTICAL DEPTH CLOUD FRACTION ATMOSPHERIC DATA AEROSOL EFFECTIVE RADIUS PARTICLE EFFECTIVE RADIUS AEROSOL OPTICAL THICKNESS GET DATA http://daac.ornl.gov/cgi-bin/dsviewer.pl?ds_id=814 VIEW RELATED INFORMATION https://daac.ornl.gov//S2K/guides/mapss_modis_aerosol.html SAFARI 2000 MAPSS MOD04_L2 Aerosol Summary Data for Southern Africa USA/NASA ENGLISH GCMD CEOS IDN DIF VERSION 9.0