Monthly GPP (Gross Primary Production) / NPP (Net Primary Production) datasets -------------------------------------------------------------------------------- (1.) GENERAL DATASET INFORMATION -------------------------------------------------------------------------------- SPATIAL RESOLUTION: 25km TEMPORAL RESOLUTION: Monthly (total over month) DATA FORMAT: NetCDF SPATIAL PROJECTION: a global EASE-Grid (Version 1) format (1383 columns and 586 rows consisting of 32-bit float) TEMPORAL EXTENT: 1982 - 2010 SPATIAL EXTENT: High Northern Latitudes (HNL, >45degN). Areas outside of HNL domain are masked (-999 fill value) Unit: gC/m2/month Fill values: -999.0 -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- (2.) Input parameters -------------------------------------------------------------------------------- Meteorological parameters: ERA-Interim 0.25deg by 0.25deg INPUT FPAR: linear model with NDVI (GIMMS3g and VIP) -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- (3.) Naming convention -------------------------------------------------------------------------------- [ProductLabel].[Year][Month]_[NDVI].nc [ProductLabel]= GPP and NPP [NDVI]= GIMMS3g NDVI and VIP NDVI -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- (4.) EASE-Grid format information -------------------------------------------------------------------------------- http://nsidc.org/data/ease/ease_grid.html http://nsidc.org/data/ease/geolocate/index.html -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- (5.) Notes -------------------------------------------------------------------------------- The monthly GPP/NPP data are preliminary and subject to revision -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- (6.) Contacts -------------------------------------------------------------------------------- Dr. John S. Kimball (johnk@ntsg.umt.edu) Dr. Youngwook Kim (youngwook.kim@ntsg.umt.edu)