Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-18-5129-2018 |
Insights into the diurnal cycle of global Earth outgoing radiation using a numerical weather prediction model | |
Gristey, Jake J.1; Chiu, J. Christine1,2; Gurney, Robert J.1; Morcrette, Cyril J.3; Hill, Peter G.1; Russell, Jacqueline E.4; Brindley, Helen E.4,5 | |
2018-04-16 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS
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ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2018 |
卷号 | 18期号:7页码:5129-5145 |
文章类型 | Article |
语种 | 英语 |
国家 | England; USA |
英文摘要 | A globally complete, high temporal resolution and multiple-variable approach is employed to analyse the diurnal cycle of Earth's outgoing energy flows. This is made possible via the use of Met Office model output for September 2010 that is assessed alongside regional satellite observations throughout. Principal component analysis applied to the long-wave component of modelled outgoing radiation reveals dominant diurnal patterns related to land surface heating and convective cloud development, respectively explaining 68.5 and 16.0% of the variance at the global scale. The total variance explained by these first two patterns is markedly less than previous regional estimates from observations, and this analysis suggests that around half of the difference relates to the lack of global coverage in the observations. The first pattern is strongly and simultaneously coupled to the land surface temperature diurnal variations. The second pattern is strongly coupled to the cloud water content and height diurnal variations, but lags the cloud variations by several hours. We suggest that the mechanism controlling the delay is a moistening of the upper troposphere due to the evaporation of anvil cloud. The short-wave component of modelled outgoing radiation, analysed in terms of albedo, exhibits a very dominant pattern explaining 88.4% of the variance that is related to the angle of incoming solar radiation, and a second pattern explaining 6.7% of the variance that is related to compensating effects from convective cloud development and marine stratocumulus cloud dissipation. Similar patterns are found in regional satellite observations, but with slightly different timings due to known model biases. The first pattern is controlled by changes in surface and cloud albedo, and Rayleigh and aerosol scattering. The second pattern is strongly coupled to the diurnal variations in both cloud water content and height in convective regions but only cloud water content in marine stratocumulus regions, with substantially shorter lag times compared with the long-wave counterpart. This indicates that the short-wave radiation response to diurnal cloud development and dissipation is more rapid, which is found to be robust in the regional satellite observations. These global, diurnal radiation patterns and their coupling with other geophysical variables demonstrate the process-level understanding that can be gained using this approach and highlight a need for global, diurnal observing systems for Earth outgoing radiation in the future. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000430171500004 |
WOS关键词 | ANGULAR-DISTRIBUTION MODELS ; SEA-SURFACE TEMPERATURE ; BUDGET EXPERIMENT MEASUREMENTS ; TROPICAL UPPER TROPOSPHERE ; ENERGY SYSTEM INSTRUMENT ; LONGWAVE RADIATION ; CLIMATE MODEL ; MARITIME CONTINENT ; WESTERN PACIFIC ; FLUX ESTIMATION |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; 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/29462 |
专题 | 地球科学 |
作者单位 | 1.Univ Reading, Dept Meteorol, Reading, Berks, England; 2.Colorado State Univ, Dept Atmospher Sci, Ft Collins, CO 80523 USA; 3.Met Off, Exeter, Devon, England; 4.Imperial Coll London, Dept Phys, London, England; 5.Imperial Coll London, NERC Natl Ctr Earth Observat, London, England |
推荐引用方式 GB/T 7714 | Gristey, Jake J.,Chiu, J. Christine,Gurney, Robert J.,et al. Insights into the diurnal cycle of global Earth outgoing radiation using a numerical weather prediction model[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2018,18(7):5129-5145. |
APA | Gristey, Jake J..,Chiu, J. Christine.,Gurney, Robert J..,Morcrette, Cyril J..,Hill, Peter G..,...&Brindley, Helen E..(2018).Insights into the diurnal cycle of global Earth outgoing radiation using a numerical weather prediction model.ATMOSPHERIC CHEMISTRY AND PHYSICS,18(7),5129-5145. |
MLA | Gristey, Jake J.,et al."Insights into the diurnal cycle of global Earth outgoing radiation using a numerical weather prediction model".ATMOSPHERIC CHEMISTRY AND PHYSICS 18.7(2018):5129-5145. |
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