The ORNL DAAC announces the release of three new data sets.
The data set "Global Maps of Atmospheric Nitrogen Deposition, 1860, 1993, and 2050" provides global gridded estimates of atmospheric deposition of total inorganic nitrogen (N), NHx (NH3 and NH4+), and NOy (all oxidized forms of nitrogen other than N2O), in mg N/m2/year, for the years 1860 and 1993 and projections for the year 2050. Please visit the ORNL DAAC's Climate Collections web page for additional information about this data set.
In addition, the ORNL DAAC has made available the data set entitled "Leaf Area Index Maps at 30-m Resolution, VALERI Site, Larose, Canada," which provides local LAI maps for the Larose (Ontario) site in Canada. The LAI data are suitable for use in modeling carbon, water, energy, and trace gas exchange between the land surface and the atmosphere at regional scales. This data set may also be useful for monitoring changes in the land surface. Please see our Land Validation web page.
Finally, the ORNL DAAC now offers the data set "SAFARI 2000 Aerosol Fatty Acid and Stable Isotope Data, Mongu, Dry Season 2000," which includes bulk organic carbon, nitrogen and sulfur stable isotopic measurements of total suspended particulates and gas chromatography/mass spectrometry (GC/MS) analysis of fatty acids extracted from collected aerosols. These data were used to chemically describe temporal variability in aerosol compositions. The Southern African Regional Science Initiative (SAFARI 2000) was conducted in part to investigate the impacts of the large-scale transport and deposition of increasingly anthropogenic emissions on southern African biogeochemical cycling. More information can be found on the ORNL DAAC's SAFARI 2000 web page.