Journal article
The GRAPE aerosol retrieval algorithm
- Abstract:
- The aerosol component of the Oxford-Rutherford Aerosol and Cloud (ORAC) combined cloud and aerosol retrieval scheme is described and the theoretical performance of the algorithm is analysed. ORAC is an optimal estimation retrieval scheme for deriving cloud and aerosol properties from measurements made by imaging satellite radiometers and, when applied to cloud free radiances, provides estimates of aerosol optical depth at a wavelength of 550 nm, aerosol effective radius and surface reflectance at 550 nm. The aerosol retrieval component of ORAC has several incarnations - this paper addresses the version which operates in conjunction with the cloud retrieval component of ORAC (described by Watts et al., 1998), as applied in producing the Global Retrieval of ATSR Cloud Parameters and Evaluation (GRAPE) data-set. The algorithm is described in detail and its performance examined. This includes a discussion of errors resulting from the formulation of the forward model, sensitivity of the retrieval to the measurements and a priori constraints, and errors resulting from assumptions made about the atmospheric/surface state.
- Publication status:
- Published
- Peer review status:
- Reviewed (other)
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(Version of record, bin, 960.1KB, Terms of use)
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Authors
- Publisher:
- Copernicus Publications
- Journal:
- Atmospheric Measurement Techniques Discussions More from this journal
- Volume:
- 2
- Issue:
- 2
- Pages:
- 981-1026
- Publication date:
- 2009-04-01
- Edition:
- Publisher's version
- EISSN:
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1867-8610
- Language:
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English
- Keywords:
- Subjects:
- UUID:
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uuid:ec068f6f-0ff8-45c7-8a10-df94b5250d8d
- Local pid:
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ora:2791
- Deposit date:
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2009-05-15
- ARK identifier:
Terms of use
- Copyright holder:
- G E Thomas et al
- Copyright date:
- 2009
- Notes:
- Citation: Thomas, G. E. et al. (2009). 'The GRAPE aerosol retrieval algorithm', Atmospheric Measurement Techniques Discussions, 2(2), 981-1026. [Available at http://www.atmos-meas-tech-discuss.net/2/981/2009/]. © Authors 2009. This article is distributed under the terms of the Creative Commons Attribution 3.0 Licence (http://creativecommons.org/licenses/by/3.0/). This permits the copying, distribution, transmission and adaption of the work, provided the original authors are credited. For any reuse or distribution, you must make clear to others the license terms of this work. These conditions may be waived if you get permission from the copyright holder.
- Licence:
- CC Attribution (CC BY)
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