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Spatial dependence of diurnal temperature range trends on precipitation from 1950 to 2004.
- Source :
- Climate Dynamics; Feb2009, Vol. 32 Issue 2/3, p429-440, 12p, 3 Charts, 8 Graphs, 2 Maps
- Publication Year :
- 2009
-
Abstract
- This paper analyzes the spatial dependence of annual diurnal temperature range (DTR) trends from 1950–2004 on the annual climatology of three variables: precipitation, cloud cover, and leaf area index (LAI), by classifying the global land into various climatic regions based on the climatological annual precipitation. The regional average trends for annual minimum temperature ( T <subscript>min</subscript>) and DTR exhibit significant spatial correlations with the climatological values of these three variables, while such correlation for annual maximum temperature ( T <subscript>max</subscript>) is very weak. In general, the magnitude of the downward trend of DTR and the warming trend of T <subscript>min</subscript> decreases with increasing precipitation amount, cloud cover, and LAI, i.e., with stronger DTR decreasing trends over drier regions. Such spatial dependence of T <subscript>min</subscript> and DTR trends on the climatological precipitation possibly reflects large-scale effects of increased global greenhouse gases and aerosols (and associated changes in cloudiness, soil moisture, and water vapor) during the later half of the twentieth century. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09307575
- Volume :
- 32
- Issue :
- 2/3
- Database :
- Complementary Index
- Journal :
- Climate Dynamics
- Publication Type :
- Academic Journal
- Accession number :
- 35866987
- Full Text :
- https://doi.org/10.1007/s00382-008-0387-5