Optical and meteorological properties of smoke-dominated haze at the ARM Southern Great Plains Central Facility

Details Optical and meteorological properties of smoke-dominated haze at the ARM Southern Great Plains Central Facility Optical and meteorological properties of smoke-dominated haze at the ARM Southern Great Plains Central Facility

Feb 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003georl..30c..23i&link_type=abstract

Geophysical Research Letters, Volume 30, Issue 3, pp. 23-1, CiteID 1123, DOI 10.1029/2002GL016606

Physics

3

Atmospheric Composition And Structure: Aerosols And Particles (0345, 4801), Atmospheric Composition And Structure: Pollution-Urban And Regional (0305), Atmospheric Composition And Structure: Cloud Physics And Chemistry, Global Change: Atmosphere (0315, 0325), Meteorology And Atmospheric Dynamics: Radiative Processes

Scientific paper

The optical and meteorological properties of smoke-dominated haze at the Southern Great Plains Central Facility of the Atmospheric Radiation Measurement (ARM) Program from 1997 to 2001 are presented. Aerosol optical properties for smoke-dominated haze vary with season at the ARM site, with an inter-seasonal mean single scattering albedo, Ångström exponent, hemispheric backscatter fraction and hygroscopic growth factor of 0.91 +/- 0.03, 2.0 +/- 0.1, 0.14 +/- 0.02 and 1.6 +/- 0.2, respectively. In addition, the local seasonal direct radiative forcing for smoke haze ranges from -0.25 to -3.14 Wm-2. Relative to smoke-free periods, months with enhanced smoke are characterised by reduced cloud cover, increased shortwave radiation, lower liquid water path and precipitation.

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