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黑河地区鼎新戈壁与绿洲和沙漠下垫面地表辐射平衡气候学特征的对比分析 | |
其他题名 | Comparative of Climatologic Characteristics of the Surface Radiation Balance on Dingxin Gobi and Zhangye Oasis and Desert Underlaying Surfaces in Heihe Watershed, Gansu |
王慧1; 胡泽勇1; 李栋梁2; 赵逸舟1; 马伟强1 | |
ISSN | 1000-0240 |
出版年 | 2009 |
卷号 | 31期号:3页码:464-473 |
中文摘要 | 利用2006年2月至2007年1月在甘肃酒泉金塔地区进行的"绿洲系统能量与水分循环过程观测与数值研究"野外试验中鼎新戈壁下垫面地表辐射观测资料,对戈壁地区不同天气条件下和季节平均的辐射平衡特征进行了分析,并将其辐射平衡各分量的年变化特征与HEIFE实验区张掖和沙漠站1991年同期的辐射观测资料作了对比分析.结果表明:鼎新戈壁地区7月典型晴天下,其辐射各分量表现出了标准的辐射平衡的日变化形态,总辐射峰值达到1081 W·m~(-2),净辐射峰值也在650W·m~(-2)以上;由于阴天和降水天气过程的影响,使7月平均的辐射特征与典型晴天相比,短波辐射减少了30%左右.辐射收支的季节差别非常明显,季节平均日积分值由大到小依次为夏季、春季、秋季和冬季,冬季的总辐射日总量不到夏季的一半,净辐射只有夏季的1/4多些;总辐射年总量达到6 500MJ·m~(-2)以上,4月沙尘天气对这一地区总辐射有一定的影响.地表反射率整体表现为夏季小、冬季大,年平均值为0.241,比绿洲的大,而小于沙漠地区.而地面有效辐射却在夏季最大,冬季最小,年变化趋势与沙漠地区极为相近;春、夏、秋季有效辐射与吸收辐射之比在0.5左右,冬季增大到0.7以上,年平均分别为0.56,比沙漠的稍小而远大于绿洲地区;地表净辐射年变化与总辐射相同,年总量达到2 360 MJ·m~(-2),大于沙漠地区而比绿洲地区小很多. |
英文摘要 | By using the data observed in the "Oasis System Energy and Water Cycle Field Experiment" in the surface layers over Dingxin Gobi in Jinta County of Jiuquan Municipality, Gansu Province, the surface radiation budgets under typical weather conditions and their seasonal and annual variations are studied and compared with those observed from Zhangye oasis and desert areas. The following conclusions are drawn based on the studies: Each component of the surface radiation balance shows obvious diurnal variation in clear day of July, with the peak values of global and net radiations of 1081 W·m~(-2) and 650 W·m~(-2), respectively. The cloud and precipitation cause about 30% disturbances to the short wave radiation as compared with that in clear day in the studied area. The seasonal difference of radiation budget over Dingxin Gobi is quite evident. And the global and net radiations are higher in summer than those in spring, autumn and winter. The global radiation in winter is lower than a half of that in summer. The net radiation is just a quarter of that in summer. The annual total of global radiation reaches more than 6 500 MJ· m~(-2) and the sand-dust has some influences on the global radiation during high frequency sandstorm days of April. The surface albedo is small in summer and large in winter, and the annual average albedo is 0.241, which is larger than that in oasis and smaller than that in desert. But the surface effective radiation is highest in summer and lowest in winter, and its annual variation tendency is extremely close to that in desert. The ratio of effective radiation and absorbed radiation is about 0.5 in spring, summer and autumn, but increases to a-bove 0.7 in winter, and its annual mean value is 0.56, which is slightly smaller than that in desert and much larger than that in oasis. The annual variation of net radiation is the same as the global radiation and its annual total is up to 2 360 MJ· m~(-2), which is higher than that in desert and much lower than that in oasis. |
中文关键词 | 黑河下游 ; 戈壁 ; 辐射平衡 ; 气候学特征 |
英文关键词 | Heihe downstream Gobi radiation balance climatologic characteristics |
语种 | 中文 |
国家 | 中国 |
收录类别 | CSCD |
WOS类目 | METEOROLOGY ATMOSPHERIC SCIENCES |
WOS研究方向 | Meteorology & Atmospheric Sciences |
CSCD记录号 | CSCD:3743742 |
来源机构 | 中国科学院西北生态环境资源研究院 |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/223284 |
作者单位 | 1.中国科学院,寒区旱区环境与工程研究所, 兰州, 甘肃 730000, 中国; 2.南京信息工程大学, 南京, 江苏 210044, 中国 |
推荐引用方式 GB/T 7714 | 王慧,胡泽勇,李栋梁,等. 黑河地区鼎新戈壁与绿洲和沙漠下垫面地表辐射平衡气候学特征的对比分析[J]. 中国科学院西北生态环境资源研究院,2009,31(3):464-473. |
APA | 王慧,胡泽勇,李栋梁,赵逸舟,&马伟强.(2009).黑河地区鼎新戈壁与绿洲和沙漠下垫面地表辐射平衡气候学特征的对比分析.,31(3),464-473. |
MLA | 王慧,et al."黑河地区鼎新戈壁与绿洲和沙漠下垫面地表辐射平衡气候学特征的对比分析".31.3(2009):464-473. |
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