Journal cover Journal topic
The Cryosphere An interactive open-access journal of the European Geosciences Union
Journal topic

Journal metrics

IF value: 4.713
IF4.713
IF 5-year value: 4.927
IF 5-year
4.927
CiteScore value: 8.0
CiteScore
8.0
SNIP value: 1.425
SNIP1.425
IPP value: 4.65
IPP4.65
SJR value: 2.353
SJR2.353
Scimago H <br class='widget-line-break'>index value: 71
Scimago H
index
71
h5-index value: 53
h5-index53
Preprints
https://doi.org/10.5194/tc-2020-259
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-2020-259
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

  30 Sep 2020

30 Sep 2020

Review status
This preprint is currently under review for the journal TC.

Impact of updated radiative transfer scheme in RACMO2.3p3 on the surface mass and energy budget of the Greenland ice sheet

Christiaan T. van Dalum, Willem Jan van de Berg, and Michiel R. van den Broeke Christiaan T. van Dalum et al.
  • Institute for Marine and Atmospheric Research, Utrecht University, Utrecht, the Netherlands

Abstract. This study evaluates the impact of a new snow and ice albedo and radiative transfer scheme on the surface mass and energy budget for the Greenland ice sheet in the latest version of the regional climate model RACMO2, version 2.3p3. We also evaluate the modeled (sub)surface temperature and snow melt, as subsurface heating by radiation penetration now occurs. The results are compared to the previous model version and are evaluated against stake measurements and automatic weather station data of the K-transect and PROMICE projects. In addition, subsurface snow temperature profiles are compared at the K-transect, Summit and southeast Greenland. The surface mass balance is in good agreement with observations, and only changes considerably with respect to the previous RACMO2 version around the ice margins and in the percolation zone. Snow melt and refreezing, on the other hand, are changed more substantially in various regions due to the changed albedo representation, subsurface energy absorption and melt water percolation. Internal heating leads to considerably higher snow temperatures in summer, in agreement with observations, and introduces a shallow layer of subsurface melt.

Christiaan T. van Dalum et al.

Interactive discussion

Status: open (until 25 Nov 2020)
Status: open (until 25 Nov 2020)
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
[Subscribe to comment alert] Printer-friendly Version - Printer-friendly version Supplement - Supplement

Christiaan T. van Dalum et al.

Data sets

RACMO2.3p3 monthly SMB, SEB, t2m and t10m data for Greenland (September 2000-2018) Christiaan T. van Dalum, Willem Jan van de Berg, and Michiel R. van den Broeke https://doi.org/10.5281/zenodo.4013856

Christiaan T. van Dalum et al.

Viewed

Total article views: 224 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
169 53 2 224 3 2
  • HTML: 169
  • PDF: 53
  • XML: 2
  • Total: 224
  • BibTeX: 3
  • EndNote: 2
Views and downloads (calculated since 30 Sep 2020)
Cumulative views and downloads (calculated since 30 Sep 2020)

Viewed (geographical distribution)

Total article views: 215 (including HTML, PDF, and XML) Thereof 212 with geography defined and 3 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 

Cited

Saved

No saved metrics found.

Discussed

No discussed metrics found.
Latest update: 25 Oct 2020
Publications Copernicus
Download
Short summary
Absorption of solar radiation is often limited to the surface in regional climate models. Therefore, we have implemented a new radiative transfer scheme in the model RACMO2, which allows for internal heating and improves the surface reflectivity. Here, we evaluate its impact on the surface mass and energy budget and (sub)surface temperature, by using observations and the previous model version for the Greenland ice sheet. New results match better with observations and introduces subsurface melt.
Absorption of solar radiation is often limited to the surface in regional climate models....
Citation