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- Title
Toward a Combined Surface Temperature Data Set for the Arctic From the Along‐Track Scanning Radiometers.
- Authors
Dodd, E. M. A.; Veal, K. L.; Ghent, D. J.; Remedios, J. J.; Broeke, M. R.
- Abstract
Surface temperature data sets for, or including, the Arctic have been derived from various thermal infrared sensors. However, a combined, all surface temperature data set for the Arctic has not been generated previously. Here we present the first combined land, ocean, and ice surface temperature data set for the Arctic produced from Along‐Track Scanning Radiometer ‐ 2 and the Advanced Along‐Track Scanning Radiometer satellite sensors: the Along‐Track Scanning Radiometer Arctic combined Surface Temperature data set. Separate products, produced independently for each sensor and containing quantified uncertainties, together cover the period August 1995 to April 2012. Product validation, utilizing a more extensive in situ database than previous studies, shows that Along‐Track Scanning Radiometer Arctic combined Surface Temperature surface temperatures generally agree with in situ data and are similar to previous validation of input surface temperature retrievals. Biases range from −1.74 to 0.23 K over open ocean, sea ice, snow over land, and the Greenland ice sheet with higher variability over snow/ice. However, there are noticeable outliers in the validation results, particularly over Arctic land in boreal summer for Along‐Track Scanning Radiometer ‐ 2, which are likely due to cloud contamination resulting from a climatologically static snow field being used for that sensor. This study suggests that the Along‐Track Scanning Radiometer Arctic combined Surface Temperature data set presented here is a useful tool for assessment of models in the Arctic. Further work would have clear benefits including improvements to snow cover and cloud clearing to achieve a fully consistently processed, climate quality combined surface temperature data set for the Arctic region. Key Points: This study presents the first combined surface temperature data set for the Arctic, derived here from ATSR thermal infrared satellite dataProduct validation shows data set surface temperatures generally agree with in situ data, but cloud contamination is an issueThis combined surface temperature data set is a useful tool for assessment of models in the Arctic, although further work is required
- Subjects
ARCTIC regions; SURFACE temperature; RADIOMETERS; REMOTE sensing; ENVIRONMENTAL engineering
- Publication
Journal of Geophysical Research. Atmospheres, 2019, Vol 124, Issue 13, p6718
- ISSN
2169-897X
- Publication type
Article
- DOI
10.1029/2019JD030262