| A NUMERICAL SIMULATION OF THE EFFECT ON CHINESE REGIONAL CLIMATE DUE TO SEASONAL VARIATION OF LAND SURFACE PARAMETERS(PART I) |
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| 作者姓名： | SUN Jian LI Weiliang ZHOU Xiuji |
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| 作者单位： | Department of Geophysics Peking University，Beijing 100871，Chinese Academy of Meteorological Sciences，Beijing 100081，Chinese Academy of Meteorological Sciences，Beijing 100081 |
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| 摘 要： | Sensitivity experiment is an important method to study the effect on regional climate due toseasonal variation of land surface parameters.Using China Regional Climate Model(CRCM)nested in CCM1.we first simulate Chinese regional climate,then two numerical sensitivityexperiments on the effect of vegetation and roughness length are made.The results show that:(1)If the vegetation is replaced with the monthly data of 1997.precipitation and land-surfacetemperature are both changed clearly,precipitation decreases and land surface temperatureincreases,but there is no regional correspondence between these changes.And the results aremuch better than the results when climate average vegetation was used in the CRCM.(2)If theroughness length is replaced with the monthly data of 1997,there is significant change on landsurface temperature,and there is very good regional correspondence between these changes.Butthe effect on precipitation is very small.
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| 收稿时间： | 1999/9/27 0:00:00 |
| 修稿时间： | 2000/9/26 0:00:00 |
A NUMERICAL SIMULATION OF THE EFFECT ON CHINESE REGIONAL CLIMATE DUE TO SEASONAL VARIATION OF LAND SURFACE PARAMETERS(PART I) |
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| SUN Jian,LI Weiliang,ZHOU Xiuji.A NUMERICAL SIMULATION OF THE EFFECT ON CHINESE REGIONAL CLIMATE DUE TO SEASONAL VARIATION OF LAND SURFACE PARAMETERS(PART I)[J].Acta Meteorologica Sinica,2001,15(2):129-143. |
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| Authors: | SUN Jian LI Weiliang and ZHOU Xiuji |
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| Institution: | SUN Jian Department of Geophysics,Peking University,Beijing 100871LI Weiliang ZHOU Xiuji Chinese Academy of Meteorological Sciences,Beijing 100081 |
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| Abstract: | Sensitivity experiment is an important method to study the effect on regional climate due to seasonal variation of land surface parameters.Using China Regional Climate Model(CRCM) nested in CCM1.we first simulate Chinese regional climate,then two numerical sensitivity experiments on the effect of vegetation and roughness length are made.The results show that: (1)If the vegetation is replaced with the monthly data of 1997.precipitation and land-surface temperature are both changed clearly,precipitation decreases and land surface temperature increases,but there is no regional correspondence between these changes.And the results are much better than the results when climate average vegetation was used in the CRCM.(2)If the roughness length is replaced with the monthly data of 1997,there is significant change on land surface temperature,and there is very good regional correspondence between these changes.But the effect on precipitation is very small. |
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| Keywords: | land surface process sensitivity experiments regional climate model vegetation roughness length |
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