Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JCLI-D-16-0768.1 |
A Satellite-Derived Lower-Tropospheric Atmospheric Temperature Dataset Using an Optimized Adjustment for Diurnal Effects | |
Mears, Carl A.; Wentz, Frank J. | |
2017-10-01 | |
发表期刊 | JOURNAL OF CLIMATE |
ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2017 |
卷号 | 30期号:19 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Temperature sounding microwave radiometers flown on polar-orbiting weather satellites provide a long-term, global-scale record of upper-atmosphere temperatures, beginning in late 1978 and continuing to the present. The focus of this paper is a lower-tropospheric temperature product constructed using measurements made by the Microwave Sounding Unit channel 2 and the Advanced Microwave Sounding Unit channel 5. The temperature weighting functions for these channels peak in the middle to upper troposphere. By using a weighted average of measurements made at different Earth incidence angles, the effective weighting function can be lowered so that it peaks in the lower troposphere. Previous versions of this dataset used general circulation model output to remove the effects of drifting local measurement time on the measured temperatures. This paper presents a method to optimize these adjustments using information from the satellite measurements themselves. The new method finds a global-mean land diurnal cycle that peaks later in the afternoon, leading to improved agreement between measurements made by co-orbiting satellites. The changes result in global-scale warming [global trend (70 degrees S-80 degrees N, 1979-2016) = 0.174 degrees C decade(-1)], similar to 30% larger than our previous version of the dataset [global trend (70 degrees S-800 degrees N, 1979-2016) = 0.1340 degrees C decade(-1)]. This change is primarily due to the changes in the adjustment for drifting local measurement time. The new dataset shows more warming than most similar datasets constructed from satellites or radiosonde data. However, comparisons with total column water vapor over the oceans suggest that the new dataset may not show enough warming in the tropics. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000411436700006 |
WOS关键词 | MODEL HADGEM1 ; TIME-SERIES ; DATA SET ; MSU ; HOMOGENIZATION ; CONSTRUCTION ; SURFACE ; TRENDS |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/20889 |
专题 | 气候变化 |
作者单位 | Remote Sensing Syst, Santa Rosa, CA 95401 USA |
推荐引用方式 GB/T 7714 | Mears, Carl A.,Wentz, Frank J.. A Satellite-Derived Lower-Tropospheric Atmospheric Temperature Dataset Using an Optimized Adjustment for Diurnal Effects[J]. JOURNAL OF CLIMATE,2017,30(19). |
APA | Mears, Carl A.,&Wentz, Frank J..(2017).A Satellite-Derived Lower-Tropospheric Atmospheric Temperature Dataset Using an Optimized Adjustment for Diurnal Effects.JOURNAL OF CLIMATE,30(19). |
MLA | Mears, Carl A.,et al."A Satellite-Derived Lower-Tropospheric Atmospheric Temperature Dataset Using an Optimized Adjustment for Diurnal Effects".JOURNAL OF CLIMATE 30.19(2017). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论