Meteorological observations from ship cruises during summer to the central Arctic: A comparison with reanalysis data

Details Meteorological observations from ship cruises during summer to the central Arctic: A comparison with reanalysis data Meteorological observations from ship cruises during summer to the central Arctic: A comparison with reanalysis data

May 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010georl..3709810l&link_type=abstract

Geophysical Research Letters, Volume 37, Issue 9, CiteID L09810

Computer Science

Sound

3

Atmospheric Processes: Boundary Layer Processes, Atmospheric Processes: Climate Change And Variability (1616, 1635, 3309, 4215, 4513), Oceanography: Physical: Ice Mechanics And Air/Sea/Ice Exchange Processes (0700, 0750, 0752, 0754)

Scientific paper

Near-surface meteorological observations and rawinsonde soundings from Arctic cruises with the German icebreaker RV Polarstern during August 1996, 2001, and 2007 are compared with each other and with ERA-Interim reanalyses. Although the observations are usually applied in the reanalysis, they differ considerably from ERA data. ERA overestimates the relative humidity and temperature in the atmospheric boundary layer and the base height of the capping inversion. Warm biases of ERA near-surface temperatures amount up to 2 K. The melting point of snow is the most frequent near-surface temperature in ERA, while the observed value is the sea water freezing temperature. Both observations and ERA show that above 400 m, in the North Atlantic sector 0-90 E, the warmest August occurred in 2001, and August 2007 had the highest humidity. In the Eastern Siberian and Beaufort Sea region ERA temperatures along 80 and 85 N were highest in 2007.

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