MYD08_E3 is a level-3 MODIS gridded atmosphere 8-day global joint product. It contains eight days 1 x 1 degree grid average values of atmospheric parameters related to atmospheric aerosol particle properties, total ozone burden, atmospheric water vapor, cloud optical and physical properties, and atmospheric stability indices. This product also provides standard deviations, quality assurance weighted means and other statistically derived quantities for each parameter.
The level-3 atmosphere 8-day global product (MYD08_E3) consists of approximately 1000 statistical data sets (SDSs). Essentially all level-3 MODIS atmosphere 8-day global parameters are derived from the scientific parameters of MODIS Atmosphere Daily Global Joint Product (MYD08_D3). Statistics are computed over a 1 degree equal-angle lat-lon grid that spans an 8-day interval. It should be noted that the eight-day intervals are not reset at the beginning of a new month or a new year. Since the grid cells are 1 degree by 1 degree, the output grid is always 360 pixels in width and 180 pixels in length.
MYD08_D3 product files are stored in Hierarchical Data Format (HDF), the standard data format for all NASA Earth Observing System (EOS) data products. Each gridded global parameter is stored as Scientific Data Set (SDS) within the file. For browsing and extracting data from these files, see software tools available on the LAADS web site.
For additional details see the MODIS Atmospheres web site page on Collection 6.1 Updates.