globalchange  > 影响、适应和脆弱性
DOI: 10.1002/2016JD025514
论文题名:
Determination of global Earth outgoing radiation at high temporal resolution using a theoretical constellation of satellites
作者: Gristey J.J.; Chiu J.C.; Gurney R.J.; Han S.-C.; Morcrette C.J.
刊名: Journal of Geophysical Research: Atmospheres
出版年: 2017
卷: 122, 期:2
起始页码: 1114
结束页码: 1131
语种: 英语
英文关键词: Earth outgoing radiation ; satellite constellation ; spherical harmonic analysis
Scopus关键词: error analysis ; irradiance ; radiation budget ; radiometer ; satellite constellation ; spatial resolution ; spherical harmonics ; theoretical study
英文摘要: New, viable, and sustainable observation strategies from a constellation of satellites have attracted great attention across many scientific communities. Yet the potential for monitoring global Earth outgoing radiation using such a strategy has not been explored. To evaluate the potential of such a constellation concept and to investigate the configuration requirement for measuring radiation at a time resolution sufficient to resolve the diurnal cycle for weather and climate studies, we have developed a new recovery method and conducted a series of simulation experiments. Using idealized wide field-of-view broadband radiometers as an example, we find that a baseline constellation of 36 satellites can monitor global Earth outgoing radiation reliably to a spatial resolution of 1000 km at an hourly time scale. The error in recovered daily global mean irradiance is 0.16 W m−2 and −0.13 W m−2, and the estimated uncertainty in recovered hourly global mean irradiance from this day is 0.45 W m−2 and 0.15 W m−2, in the shortwave and longwave spectral regions, respectively. Sensitivity tests show that addressing instrument-related issues that lead to systematic measurement error remains of central importance to achieving similar accuracies in reality. The presented error statistics therefore likely represent the lower bounds of what could currently be achieved with the constellation approach, but this study demonstrates the promise of an unprecedented sampling capability for better observing the Earth's radiation budget. ©2016. The Authors.
资助项目: "This work was supported by the Natural Environment Research Council (NERC) SCience of the Environment: Natural and Anthropogenic pRocesses, Impacts and Opportunities (SCENARIO) Doctoral Training Partnership (DTP), grant NE/L002566/1. The Met Office modeled and recovered TOA outgoing irradiance fields used in this study have been archived and are available upon request from the authors (J.Gristey@pgr.reading.ac.uk). The authors would like to thank Warren Wiscombe, Richard Allan, Keith Shine, Peter Jan Van Leeuwen, Graeme Stephens, Phil Evans, Bill Collins, and Daniel Feldman for stimulating discussions.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/62749
Appears in Collections:影响、适应和脆弱性
气候减缓与适应

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作者单位: Department of Meteorology, University of Reading, Reading, United Kingdom; NERC National Centre for Earth Observation at University of Reading, Reading, United Kingdom; School of Engineering, University of Newcastle, Callaghan, NSW, Australia; Met Office, Exeter, United Kingdom

Recommended Citation:
Gristey J.J.,Chiu J.C.,Gurney R.J.,et al. Determination of global Earth outgoing radiation at high temporal resolution using a theoretical constellation of satellites[J]. Journal of Geophysical Research: Atmospheres,2017-01-01,122(2)
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