Version 4 DMSP-OLS Nighttime Lights Time Series

NOTE: Disk space required for compressed data is ~300 MB and uncompressed data is ~3 GB. NOTE: These files are gzipped and added to tar files under linux. Winzip and some other windows utilities may convert newlines in the data into a windows linefeed. To avoid this in WinZip go to -> Options -> Configuration -> Miscellaneous and uncheck the 'TAR file smart CR/LF conversion'.

Average Visible, Stable Lights, & Cloud Free Coverages Year\Sat. F10 F12 F14 F15 F16 F18 1992 F101992 ------- ------- ------- ------- ------- 1993 F101993 ------- ------- ------- ------- ------- 1994 F101994 F121994 ------- ------- ------- ------- 1995 ------- F121995 ------- ------- ------- ------- 1996 ------- F121996 ------- ------- ------- ------- 1997 ------- F121997 F141997 ------- ------- ------- 1998 ------- F121998 F141998 ------- ------- ------- 1999 ------- F121999 F141999 ------- ------- ------- 2000 ------- ------- F142000 F152000 ------- ------- 2001 ------- ------- F142001 F152001 ------- ------- 2002 ------- ------- F142002 F152002 ------- ------- 2003 ------- ------- F142003 F152003 ------- ------- 2004 ------- ------- ------- F152004 F162004 ------- 2005 ------- ------- ------- F152005 F162005 ------- 2006 ------- ------- ------- F152006 F162006 ------- 2007 ------- ------- ------- F152007 F162007 ------- 2008 ------- ------- ------- ------- F162008 ------- 2009 ------- ------- ------- ------- F162009 ------- 2010 ------- ------- ------- ------- ------- F182010

F15 2003 Nighttime Lights Composite

NOTE: Disk space required for compressed data is ~500 - 800 MB and uncompressed data is ~3 GB. NOTE: These files are gzipped and added to tar files under linux. Winzip and some other windows utilities may convert newlines in the data into a windows linefeed. To avoid this in WinZip go to -> Options -> Configuration -> Miscellaneous and uncheck the 'TAR file smart CR/LF conversion'.

Average Lights x Pct Year\Sat. F10 F12 F14 F15 F16 F18 1992 F101992 ------- ------- ------- ------- ------- 1993 F101993 ------- ------- ------- ------- ------- 1994 F101994 F121994 ------- ------- ------- ------- 1995 ------- F121995 ------- ------- ------- ------- 1996 ------- F121996 ------- ------- ------- ------- 1997 ------- F121997 F141997 ------- ------- ------- 1998 ------- F121998 F141998 ------- ------- ------- 1999 ------- F121999 F141999 ------- ------- ------- 2000 ------- ------- F142000 F152000 ------- ------- 2001 ------- ------- F142001 F152001 ------- ------- 2002 ------- ------- F142002 F152002 ------- ------- 2003 ------- ------- F142003 F152003 ------- ------- 2004 ------- ------- ------- F152004 F162004 ------- 2005 ------- ------- ------- F152005 F162005 ------- 2006 ------- ------- ------- F152006 F162006 ------- 2007 ------- ------- ------- F152007 F162007 ------- 2008 ------- ------- ------- ------- F162008 ------- 2009 ------- ------- ------- ------- F162009 ------- 2010 ------- ------- ------- ------- ------- F182010

Average Lights X Pct The nighttime lights product known as avg_lights_x_pct is derived from the average visible band digital number (DN) of cloud-free light detections multiplied by the percent frequency of light detection. The inclusion of the percent frequency of detection term normalizes the resulting digital values for variations in the persistence of lighting. For instance, the value for a light only detected half the time is discounted by 50%. Note that this product contains detections from fires and a variable amount of background noise. This is the product used to infer gas flaring volumes from the nighttime lights.