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MSLER Release Announcement

New MEaSUREs Reflectivity Data Now Available

MSLER Release Announcement

Figure 1. 340 nm LER linear trends as a function of latitude and longitude (Reflectivity Units/Decade; 1 RU is a reflectivity of 0.01 or 1%) for the non-noon normalized data (1979-2012).

MSLER Release Announcement

The NASA Goddard Earth Sciences Data and Information Services Center (GES DISC), in collaboration with Principal Investigator Jay Herman, is pleased to announce the release of data products from the "Earth Surface and Atmosphere Reflectivity Since 1979 from Multiple Satellites" project. The project is part of the NASA Making Earth Science Data Records for Use in Research Environments (MEaSUREs) Program.

The Multi-Satellite Lambertian Equivalent Reflectivity (LER; 340 ±0.55 nm) Version 1 data include observations from the Solar Backscatter Ultraviolet Instrument (SBUV) Nimbus-7, SBUV/2  NOAA-9, -11, -14, -16, -17, -18, -19, Total Ozone Mapping Spectrometer  (TOMS) Nimbus-7 and EarthProbe, Ozone Monitoring Instrument (OMI) Aura, and the Sea-viewing Wide Field-of-view Sensor (SeaWiFS) SeaStar.  Daily 5-deg zonal mean products are derived from observations from 1978 to 2012 for the SBUV series only. The other satellite data sets have calibration problems (TOMS) or incompatibilities (OMI off-nadir vew and SeaWiFS 412 ±10 nm) making them unsuitable for a long term time series with common calibration. The SBUV/SBUV2 LER 10-day 2x5 degree gridded products cover the time from 1980 to 2012. Both the zonal mean and the gridded data are available in two product types: Local Satellite Time (LST) and Noon Normalized (NN). The LST data are uncorrected for the drift of the local equator crossing time of the spacecrafts. The NN data have been corrected to local noon equator crossing time for latitudes less than 60 degrees.

The LER time series is formed from the common calibrated  overlapping N7-SBUV and SBUV-2 series of instruments.


Figure 2. The 340 nm LER time series is formed from the common calibrated overlapping Nimbus 7-SBUV and SBUV-2 series of instruments (1979-2011). Where the LER time series overlap, the values are averaged to form a 33-year continuous data set. The light grey color corresponds to daily LER, while the black solid lines are a 30-day low-pass filter of the daily data. The units are RU (1 RU is a reflectivity of 0.01 or 1%).  

For access to and additional information on the LER data see the GES DISC MEaSUREs portal.

Questions or comments? Email the NASA GES DISC Help Desk:


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Last updated: Nov 07, 2013 04:41 PM ET