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Atmospheric Physics, Chemistry and Climate


Anthropogenic, natural, and hydrologic dust sources visualized with GoogleEarth.

Natural, anthropogenic and hydrologic dust sources

description: Dust sources detected from MODIS (Aqua) Deep Blue Level 2 aerosol products are attributed natural (yellow shading), anthropogenic (magenta shading) or hydrologic (blue shading) origin if at least 30% land use (anthropogenic) or 10% ephemeral water bodies (hydrologic) are present.

units: % FoO Dust Optical Depth>0.2
resolution: 0.1×0.1 degree (~10km)
format: kmz (zip kml file, no need to unzip just open with GoogleEarth)
files: Australia, North Africa, South Africa, Middle East, Central-South Asia, East Asia, North America, South America
reference: Ginoux et al. (2010) ,  Ginoux et al. (2012)

Dust source inventory

description: fractional area of grid cell with erodible dust
units: none
representation: cartesian latitude-longitude grid
resolution: 1×1 or  0.25×0.25
format: netcdf
reference: Ginoux et al. (2001)

Ozone-temperature statistics

Text files containing observed surface ozone-temperature statistics (Pearson correlation; slope of the best fit line between ozone and temperature) for each month at EPA CASTNet site locations over the entire United States as calculated with the methodology described in Rasmussen et al. (submitted; Atmos. Environ.) for before (1988-2002) and after (2002-2009) the eastern U.S. NOSIP Call that reduced power plant NOx emissions roughly 50% between the two time periods.

Columns in the text files read from left to right are: latitude (degrees North), longitude (degrees East), site elevation (meters), Pearson correlation coefficient, slope of the ozone-temperature relationship (ppb ozone per degree Kelvin/ Celsius), standard error of the slope of the ozone-temperature relationship (ppb ozone per degree Kelvin/Celsius), and the final column contains the number of months used in the calculation of the correlation coefficient and the slope of the ozone-temperature relationship.

ozone-temperature statistics from EPA CASTNet (1988 to 2002) (.tgz format)

ozone-temperature statistics from EPA CASTNet (2002 to 2009) (.tgz format)

reference: Rasmussen et al. (submitted; Atmos. Environ.)