Physics
Scientific paper
Sep 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003georl..30qclm1b&link_type=abstract
Geophysical Research Letters, Volume 30, Issue 17, pp. CLM 1-1, CiteID 1878, DOI 10.1029/2003GL017776
Physics
1
Meteorology And Atmospheric Dynamics: Boundary Layer Processes, Meteorology And Atmospheric Dynamics: Climatology (1620), Meteorology And Atmospheric Dynamics: Land/Atmosphere Interactions, Meteorology And Atmospheric Dynamics: Middle Atmosphere Dynamics (0341, 0342), Meteorology And Atmospheric Dynamics: General Or Miscellaneous
Scientific paper
Many investigators have used near-surface air temperature measurements to document a downward global trend in the diurnal temperature range (DTR). In this paper, we use radiosonde-based tropospheric measurements to examine vertical dimensions in trends in the DTR over the central United States. We find declining trends in DTR only at 85 kPa and the surface in the high-sun season, with the absolute trend at 85 kPa being greater than the trend at the surface suggesting that the trend in DTR is far more than an urban artifact in the data. There are no significant trends in DTR from 70 kPa to 25 kPa in any season. These results suggest that DTR trends in the low troposphere are likely influenced by near-surface processes such as variations in cloudiness, vegetation, or precipitation but not dominated by urban effects.
Balling Robert C.
Cerveny Randall S.
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