Convective Planetary Boundary Layer Evolution and Land Surface Energy Balance

Details Convective Planetary Boundary Layer Evolution and Land Surface Energy Balance Convective Planetary Boundary Layer Evolution and Land Surface Energy Balance

May 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004agusm.h23a..01s&link_type=abstract

American Geophysical Union, Spring Meeting 2004, abstract #H23A-01

Physics

1640 Remote Sensing : : : : : : : : : : : : : : :, 1866 Soil Moisture, 3307 Boundary Layer Processes, 3314 Convective Processes, 3322 Land/Atmosphere Interactions

Scientific paper

The relationships among convective planetary boundary layer (PBL) properties and land surface energy balance on diurnal and regional scales are explored using 132 days worth of data from ARM-SGP. Previous attempts to infer land-surface properties from observations of the PBL have been constrained by difficulties in accurately parameterizing the conservation equation, and have been limited to multi-day averages or small samples of daily case studies. A empirical investigation of relationships among PBL and land surface properties indicates that atmospheric stability in the layer of PBL growth is the most influential variable controlling PBL development, followed by soil moisture, 2m-potential temperature, and 2m-specific humidity. These relationships are exploited using a statistical technique to predict and explain PBL growth from observations of stability and soil water content. Using this approach, it is possible to use limited observations of the PBL to estimate soil moisture, and by extension, land surface energy balance on daily timescales without the need for detailed land surface parameterizations.

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