| 青藏高原及其周围植被对夏季气候影响的套网格数值试验比较 |
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| 引用本文： | 周锁铨.青藏高原及其周围植被对夏季气候影响的套网格数值试验比较[J].南京气象学院学报,1998,21(1):85-94. |
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| 作者姓名： | 周锁铨 |
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| 作者单位： | 南京气象学院应用气象学系，南京气象学院气象学系，西藏林芝气象局 |
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| 摘 要： | 利用钱永甫有地形５层原始方程模式，与颜宏等复杂地形条件下有限区域细网格模式进行单向嵌套，即初始场采用前者计算５ｄ后，得到各特征等压面上的高度场和湿度场，向后者每２４ｈ输送一次边界值。地－气模式采用经Ｄｅａｒｄｏｒｆ植被参数化修正的地面热量平衡方程进行耦合。在此基础上进行了夏季（７月）有植被和无植被两种情况的数值试验。有植被情况模拟的高度场、温度场与实测场的相关系数高于无植被的情况。试验发现，有植被比无植被情况的海平面气压场、低层高度场、潜热输送、整层大气湿度和降水量有所增加，而温度场和大陆热低压强度有所降低。
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| 关 键 词： | 青藏高原 植被 数值试验 夏季 气候影响 |
SIMULATION OF SUMMER CLIMATE EFFECT OF VEGETATION OF TIBETAN PLATEAU AND ITS VICINITY |
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| Zhou Suoquan,Chen Wanlong.SIMULATION OF SUMMER CLIMATE EFFECT OF VEGETATION OF TIBETAN PLATEAU AND ITS VICINITY[J].Journal of Nanjing Institute of Meteorology,1998,21(1):85-94. |
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| Authors: | Zhou Suoquan Chen Wanlong |
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| Abstract: | Used was an one way nested grid model consisting of a five layer primitive equation model containing topography (Qian) and a limited area fine mesh model over complex terrian to investigate the effect on east Asian summer climate of the vegetation over the Tibetan plateau and its surroundings. The nested model was carried out in such a way that height and temperature fields at a range of characteristic surfaces from 5 day integration from the former submodel as initial fields were offered to the latter as boundary values at a 24 h interval. Also, the air earth model was based on coupling by a surface heat balance equation revised by the vegetation parameterization (Deardorff). On this basis, numerical experiments were conducted for the cases of vegetation available (Exp. I) and none of it (Exp. II) in summer. Evidence suggests that coherence coefficients between the simulated and observed height and temperature fields were higher in Exp. I, and some increase was found in sea surface level pressure, low level (850 hPa) height, latent heat transfer, humidity throughout the atmospheric extent and precipitation from Exp. I compared to the case of Exp. II in contrast to the temperature and thermal low intensity in the former case. |
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| Keywords: | Tibetan plateau vegetation experiment with vegetation presenet (Exp I) no vegetation experimet (Exp II) |
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