Abstract
Background:The mesoscale circulation over Kuwait is an important influence on changes in surface temperatures and soil temperatures.Introduction:This paper presents two common summertime atmospheric features over Kuwait linking wind circulation to soil temperatures.Methods:In this study, we use the European Centre for Medium-range Weather Forecasts ECMWF reanalysis ERA-Interim dataset to investigate effects of the synoptic scale and mesoscale circulations.Results:The results show that a large-scale pressure gradient in summer typically leads to northerly winds over Kuwait, while a weak synoptic-scale pressure gradient leads to light easterly humid winds from the Persian Gulf, consistent with a mesoscale circulation.Conclusions:The results demonstrate the significance of wind circulations in driving the Soil Temperature (SOILT). Using the Era-Interim/Land reanalysis dataset for August 2015 over Kuwait, the average SOILT on days of sea breeze is higher than the average SOILT on days dominated by a synoptic-scale pressure gradient.
Highlights
This paper presents two common summertime atmospheric features over Kuwait linking wind circulation to soil temperatures
The results show that a large-scale pressure gradient in summer typically leads to northerly winds over Kuwait, while a weak synoptic-scale pressure gradient leads to light easterly humid winds from the Persian Gulf, consistent with a mesoscale circulation
The results demonstrate the significance of wind circulations in driving the Soil Temperature (SOILT)
Summary
This paper presents two common summertime atmospheric features over Kuwait linking wind circulation to soil temperatures. Atmosphere-land interactions control the soil thermodynamic properties, including interactions between soil temperature (SOILT), skin temperature, and air temperature. The SOILT in the region is affected by various factors including global and regional weather patterns, soil type, and topography. The land-sea temperature contrast is one of the most important factors allowing development of the sea breeze. Greater magnitude of daytime heating of the land surface will result in strengthening sea breeze propagation inland [2]. The sea breeze relies on a surface temperature difference, topography, wave propagation, stability, and the background synopticscale wind [3]. The mesoscale circulation over Kuwait is an important influence on changes in surface temperatures and soil temperatures
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