摘要
利用2007年5月23日~6月22日的观测数据和先前已有的相关实测资料,分析了总辐射、大气逆辐射、地面长波辐射、有效辐射以及地表反射率。结果表明：春末夏初珠峰大本营地区出现瞬时总辐射大于太阳常数的现象相当频繁,甚至还能出现小时平均值也大于太阳常数的记录;由于珠峰地区海拔高,大气稀薄,低温低湿,大气逆辐射明显减少;地面长波辐射不仅低于平原地区,也低于青藏高原其他地区;在地表辐射平衡中,珠峰大本营地表有效辐射大于反射辐射;随着海拔高度的增加,白天净辐射正值持续的时间相应缩短而最大值减少。
Based on the observation data and other correlative data during May 23-June 22 2007, the global solar radiation, atmospheric counter radiation, surface upward longwave radiations, net radiation and surface albedo are analyzed. The results are as follows. Global solar radiation exceeded the solar constant are quite frequent, even its hourly average one can also exceeded the solar constant; because of high elevation, thin atmosphere, low temperature and low humidity in Mr. Qomolangma region, atmospheric counter radiation significantly reduced; surface longwave radiation not only lower than the plain areas, but also lower than other parts of the Qinghai-Tibet Plateau; in the course of surface radiation, surface effective radiation exceeded refected radiation at Mt Qomolangma base camp; as the altitude increases, time of positive net radiation persisting shortened and the maximum reduced accordingly.
出处
《高原气象》
CSCD
北大核心
2009年第3期516-522,共7页
Plateau Meteorology
基金
中国科学院知识创新工程重要方向项目“青藏高原南部地区冰川对气候变化响应过程研究”(KZCX3-SW-344)
中国气象局新技术推广项目(200501808001)
公益性行业(气象)科研专项“中国气候系统协同观测与预测研究”(GYHY(QX)2007-6-5)共同资助
关键词
珠峰地区
春末夏初
辐射特征
Mt. Qomolangma area
Late spring to early summer
Radiant character
