| DOI: | 10.1007/s00382-013-1959-6
|
| Scopus记录号: | 2-s2.0-84905080643
|
| 论文题名: | Using longwave HIRS radiances to test climate models |
| 作者: | Turner E.C.; Tett S.F.B.
|
| 刊名: | Climate Dynamics
|
| ISSN: | 9307575
|
| 出版年: | 2014
|
| 卷: | 43, 期:2017-03-04 | | 起始页码: | 1103
|
| 结束页码: | 1127
|
| 语种: | 英语
|
| 英文关键词: | Clouds
; GCM
; HadGEM2
; HIRS
; Radiation
; RTTOV
|
| 英文摘要: | A 'model-to-radiance' comparison of simulated brightness temperatures from the Hadley Centre Global Environmental Model 2 with measurements from the High Resolution Infrared Radiation Sounder/4 (HIRS/4) instrument onboard the MetOp-A satellite is presented. For the all-sky, the model overestimates brightness temperatures in the atmospheric window region with the greatest biases over areas associated with deep convective cloud. In contrast to many global climate models, much smaller clear-sky biases are found indicating that model clouds are the dominating source of error. Simulated values in upper atmospheric CO2 channels approximate observations better as a result of compensating cold biases at the poles and warm biases at lower latitudes, due to a poor representation of the Brewer Dobson circulation in the 38 level 'low-top' configuration of the model. Simulated all and clear-sky outgoing longwave radiation (OLR) evaluated against the Clouds and the Earth's Radiant Energy System (CERES) and HIRS OLR products reveal good agreement, in part due to cancellation of positive and negative biases. Through physical arguments relating to the spectral energy balance within a cloud, it is suggested that broadband agreement could be the result of a balance between positive window biases and unseen negative biases originating from the water vapour rotational band in the far infrared (not sampled by HIRS). © 2013 Springer-Verlag Berlin Heidelberg. |
| 资助项目: | NOAA, National Oceanic and Atmospheric Administration
|
| Citation statistics: |
|
| 资源类型: | 期刊论文
|
| 标识符: | http://119.78.100.158/handle/2HF3EXSE/54626
|
| Appears in Collections: | 过去全球变化的重建
|
|
There are no files associated with this item.
|
|
作者单位: | Grant Institute, School of Geosciences, University of Edinburgh, King's Buildings, Edinburgh, EH9 3JW, United Kingdom
|
| Recommended Citation: | |
Turner E.C.,Tett S.F.B.. Using longwave HIRS radiances to test climate models[J]. Climate Dynamics,2014-01-01,43(2017-03-04)
|
|
|