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为了研究蒸发互补关系的区域变异性,该文引入了水汽压-温度(p-t)状态空间。在蒸发互补关系中,湿润环境蒸散发量通常采用Priestley-Taylor(P-T)公式进行计算。研究表明:大气环流和洋流将热量和水汽由低纬度向高纬度输送,导致P-T公式中的参数α随纬度增高而增大;海陆之间的大气运动将水汽由海洋输送到陆地,导致α随着离海洋距离的增加而减小。这与中国108个流域的水文气象数据所揭示的规律是一致的。
In order to study the regional variability of the complementary relationship of evaporation, this paper introduces the vapor pressure-temperature (p-t) state space. In the complementary relationship of evaporation, the amount of evapotranspiration in humid environment is usually calculated by Priestley-Taylor (P-T) formula. The results show that the atmospheric circulation and ocean current transport heat and water vapor from low latitudes to high latitudes, resulting in the increase of the parameter α in PT formula with latitude. The atmospheric movement between land and sea transports water vapor from the ocean to land, resulting in α The distance from the ocean increases and decreases. This is consistent with the laws revealed by the hydrological meteorological data of 108 basins in China.