A Retrospective, Iterative, Geometry-Based (RIGB) tilt-correction method  for radiation observed by automatic weather stations on snow-covered surfaces: application to Greenland

Wang, Wenshan; Zender, Charles S.; van As, Dirk; Smeets, Paul C. J. P.; van den Broeke, Michiel R.

doi:https://doi.org/10.5194/tc-10-727-2016

Articles | Volume 10, issue 2

https://doi.org/10.5194/tc-10-727-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/tc-10-727-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 10, issue 2

Research article

|

24 Mar 2016

Research article |

| 24 Mar 2016

A Retrospective, Iterative, Geometry-Based (RIGB) tilt-correction method for radiation observed by automatic weather stations on snow-covered surfaces: application to Greenland

Wenshan Wang, Charles S. Zender, Dirk van As, Paul C. J. P. Smeets, and Michiel R. van den Broeke

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Final revised paper (published on 24 Mar 2016)
Preprint (discussion started on 03 Nov 2015)

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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- Supplement

RC C2426: 'Review of the paper 'A Retrospective, Iterative, Geometry-Based (RIGB) tilt correction method for radiation observed by Automatic Weather Stations on snow-covered surfaces: application to Greenland' by W. Wang et al.', Anonymous Referee #1, 03 Dec 2015
RC C2580: 'Review of "A Retrospective, Iterative, Geometry-Based (RIGB) tilt correction method for radiation observed by Automatic Weather Stations on snow-covered surfaces: application to Greenland"', Marie Dumont, 23 Dec 2015
AC C3012: 'Response to Reviewers', Wenshan Wang, 10 Feb 2016

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

AR by Wenshan Wang on behalf of the Authors (11 Feb 2016) Author's response Manuscript

ED: Publish as is (11 Mar 2016) by Valentina Radic

AR by Wenshan Wang on behalf of the Authors (11 Mar 2016) Manuscript

Short summary

We identify and correct station-tilt-induced biases in insolation observed by automatic weather stations on the Greenland Ice Sheet. Without tilt correction, only 40 % of clear days have the correct solar noon time (±0.5 h). The largest hourly bias exceeds 20 %. We estimate the tilt angles based on solar geometric relationship between insolation observed on horizontal surfaces and that on tilted surfaces, and produce shortwave radiation and albedo that agree better with independent data sets.