Friday, January 28, 2011

Jan. 28 - Low wind high PM episode - Low at NMSU this morning was 23F. The forecast for today looks to be a mild day with low winds and clear skies. Below is the 20 UTC (1 pm MST) surface wind forecast showing winds in the 1 to 4 m/s range throughout the region.
By 10 am (below) we were getting northerly flow in the east and easterly in the west according to the model but the airport observations show calms. The NMED Deming airport winds at 10 am were 1 m/s from the ENE.
This morning's MODIS AOD product showed very little aerosol over the region.
We saw a low wind high PM spike at the Sunland Park City Yard  station tonight. Peak PM10 was 293 µg/m3 and peak PM2.5 was 61 µg/m3.

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