An 11-year global gridded aerosol optical thickness reanalysis (v1.0) for atmospheric and climate sciences

被引:140
作者
Lynch, Peng [1 ]
Reid, Jeffrey S. [2 ]
Westphal, Douglas L. [2 ]
Zhang, Jianglong
Hogan, Timothy F. [2 ]
Hyer, Edward J. [2 ]
Curtis, Cynthia A. [2 ]
Hegg, Dean A. [4 ]
Shi, Yingxi [3 ]
Campbell, James R. [2 ]
Rubin, Juli I. [5 ]
Sessions, Walter R. [1 ,6 ]
Turk, F. Joseph [7 ]
Walker, Annette L. [2 ]
机构
[1] Comp Sci Corp Govt Solut LLC, Monterey, CA 93940 USA
[2] Naval Res Lab, Marine Meteorol Div, Monterey, CA USA
[3] Univ N Dakota, Dept Atmospher Sci, Grand Forks, ND 58201 USA
[4] Univ Washington, Dept Atmospher Sci, Seattle, WA 98195 USA
[5] Natl Res Council Postdoctoral Res Associate, Monterey, CA USA
[6] Univ Wisconsin Madison, Dept Atmospher & Ocean Sci, Madison, WI USA
[7] Jet Prop Lab, Pasadena, CA USA
基金
美国国家科学基金会;
关键词
SEA-SURFACE-TEMPERATURE; MINERAL DUST AEROSOL; AIR-POLLUTION MODEL; DATA-ASSIMILATION; CLOUD CONTAMINATION; FIRE EMISSIONS; SATELLITE DATA; DEPTH PRODUCT; MODIS; TRANSPORT;
D O I
10.5194/gmd-9-1489-2016
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
While stand alone satellite and model aerosol products see wide utilization, there is a significant need in numerous atmospheric and climate applications for a fused product on a regular grid. Aerosol data assimilation is an operational reality at numerous centers, and like meteorological reanalyses, aerosol reanalyses will see significant use in the near future. Here we present a standardized 2003-2013 global 1 x 1 degrees and 6-hourly modal aerosol optical thickness (AOT) reanalysis product. This data set can be applied to basic and applied Earth system science studies of significant aerosol events, aerosol impacts on numerical weather prediction, and electro-optical propagation and sensor performance, among other uses. This paper describes the science of how to develop and score an aerosol reanalysis product. This reanalysis utilizes a modified Navy Aerosol Analysis and Prediction System (NAAPS) at its core and assimilates quality controlled retrievals of AOT from the Moderate Resolution Imaging Spectroradiometer (MODIS) on Terra and Aqua and the Multi-angle Imaging Spectro-Radiometer (MISR) on Terra. The aerosol source functions, including dust and smoke, were regionally tuned to obtain the best match between the model fine-and coarse-mode AOTs and the Aerosol Robotic Network (AERONET) AOTs. Other model processes, including deposition, were tuned to minimize the AOT difference between the model and satellite AOT. Aerosol wet deposition in the tropics is driven with satellite-retrieved precipitation, rather than the model field. The final reanalyzed fine-and coarse-mode AOT at 550 nm is shown to have good agreement with AERONET observations, with global mean root mean square error around 0.1 for both fine-and coarse-mode AOTs. This paper includes a discussion of issues particular to aerosol reanalyses that make them distinct from standard meteorological reanalyses, considerations for extending such a reanalysis outside of the NASA A-Train era, and examples of how the aerosol reanalysis can be applied or fused with other model or remote sensing products. Finally, the reanalysis is evaluated in comparison with other available studies of aerosol trends, and the implications of this comparison are discussed.
引用
收藏
页码:1489 / 1522
页数:34
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