Improving surface melt estimation over the Antarctic Ice Sheet using deep learning: a proof of concept over the Larsen Ice Shelf
Accurately estimating the surface melt volume of the Antarctic Ice Sheet is challenging and has hitherto relied on climate modeling or observations from satellite remote sensing. Each of these methods has its limitations, especially in regions with high surface melt. This study aims to demonstrate t...
Published in: | The Cryosphere |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications
2021
|
Subjects: | |
Online Access: | https://doi.org/10.5194/tc-15-5639-2021 https://doaj.org/article/5fff1173dabd42d19fad2e57014bdfe4 |
id |
ftdoajarticles:oai:doaj.org/article:5fff1173dabd42d19fad2e57014bdfe4 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:5fff1173dabd42d19fad2e57014bdfe4 2023-05-15T14:03:30+02:00 Improving surface melt estimation over the Antarctic Ice Sheet using deep learning: a proof of concept over the Larsen Ice Shelf Z. Hu P. Kuipers Munneke S. Lhermitte M. Izeboud M. van den Broeke 2021-12-01T00:00:00Z https://doi.org/10.5194/tc-15-5639-2021 https://doaj.org/article/5fff1173dabd42d19fad2e57014bdfe4 EN eng Copernicus Publications https://tc.copernicus.org/articles/15/5639/2021/tc-15-5639-2021.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-15-5639-2021 1994-0416 1994-0424 https://doaj.org/article/5fff1173dabd42d19fad2e57014bdfe4 The Cryosphere, Vol 15, Pp 5639-5658 (2021) Environmental sciences GE1-350 Geology QE1-996.5 article 2021 ftdoajarticles https://doi.org/10.5194/tc-15-5639-2021 2022-12-31T05:04:46Z Accurately estimating the surface melt volume of the Antarctic Ice Sheet is challenging and has hitherto relied on climate modeling or observations from satellite remote sensing. Each of these methods has its limitations, especially in regions with high surface melt. This study aims to demonstrate the potential of improving surface melt simulations with a regional climate model by deploying a deep learning model. A deep-learning-based framework has been developed to correct surface melt from the regional atmospheric climate model version 2.3p2 (RACMO2), using meteorological observations from automatic weather stations (AWSs) and surface albedo from satellite imagery. The framework includes three steps: (1) training a deep multilayer perceptron (MLP) model using AWS observations, (2) correcting Moderate Resolution Imaging Spectroradiometer (MODIS) albedo observations, and (3) using these two to correct the RACMO2 surface melt simulations. Using observations from three AWSs at the Larsen B and C ice shelves, Antarctica, cross-validation shows a high accuracy (root-mean-square error of 0.95 mm w.e. d −1 , mean absolute error of 0.42 mm w.e. d −1 , and a coefficient of determination of 0.95). Moreover, the deep MLP model outperforms conventional machine learning models and a shallow MLP model. When applying the trained deep MLP model over the entire Larsen Ice Shelf, the resulting corrected RACMO2 surface melt shows a better correlation with the AWS observations for two out of three AWSs. However, for one location (AWS 18), the deep MLP model does not show improved agreement with AWS observations; this is likely because surface melt is largely driven by factors (e.g., air temperature, topography, katabatic wind) other than albedo within the corresponding coarse-resolution model pixels. Our study demonstrates the opportunity to improve surface melt simulations using deep learning combined with satellite albedo observations. However, more work is required to refine the method, especially for complicated and ... Article in Journal/Newspaper Antarc* Antarctic Antarctica Ice Sheet Ice Shelf Ice Shelves Larsen Ice Shelf The Cryosphere Directory of Open Access Journals: DOAJ Articles Antarctic The Antarctic Larsen Ice Shelf ENVELOPE(-62.500,-62.500,-67.500,-67.500) The Cryosphere 15 12 5639 5658 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental sciences GE1-350 Geology QE1-996.5 |
spellingShingle |
Environmental sciences GE1-350 Geology QE1-996.5 Z. Hu P. Kuipers Munneke S. Lhermitte M. Izeboud M. van den Broeke Improving surface melt estimation over the Antarctic Ice Sheet using deep learning: a proof of concept over the Larsen Ice Shelf |
topic_facet |
Environmental sciences GE1-350 Geology QE1-996.5 |
description |
Accurately estimating the surface melt volume of the Antarctic Ice Sheet is challenging and has hitherto relied on climate modeling or observations from satellite remote sensing. Each of these methods has its limitations, especially in regions with high surface melt. This study aims to demonstrate the potential of improving surface melt simulations with a regional climate model by deploying a deep learning model. A deep-learning-based framework has been developed to correct surface melt from the regional atmospheric climate model version 2.3p2 (RACMO2), using meteorological observations from automatic weather stations (AWSs) and surface albedo from satellite imagery. The framework includes three steps: (1) training a deep multilayer perceptron (MLP) model using AWS observations, (2) correcting Moderate Resolution Imaging Spectroradiometer (MODIS) albedo observations, and (3) using these two to correct the RACMO2 surface melt simulations. Using observations from three AWSs at the Larsen B and C ice shelves, Antarctica, cross-validation shows a high accuracy (root-mean-square error of 0.95 mm w.e. d −1 , mean absolute error of 0.42 mm w.e. d −1 , and a coefficient of determination of 0.95). Moreover, the deep MLP model outperforms conventional machine learning models and a shallow MLP model. When applying the trained deep MLP model over the entire Larsen Ice Shelf, the resulting corrected RACMO2 surface melt shows a better correlation with the AWS observations for two out of three AWSs. However, for one location (AWS 18), the deep MLP model does not show improved agreement with AWS observations; this is likely because surface melt is largely driven by factors (e.g., air temperature, topography, katabatic wind) other than albedo within the corresponding coarse-resolution model pixels. Our study demonstrates the opportunity to improve surface melt simulations using deep learning combined with satellite albedo observations. However, more work is required to refine the method, especially for complicated and ... |
format |
Article in Journal/Newspaper |
author |
Z. Hu P. Kuipers Munneke S. Lhermitte M. Izeboud M. van den Broeke |
author_facet |
Z. Hu P. Kuipers Munneke S. Lhermitte M. Izeboud M. van den Broeke |
author_sort |
Z. Hu |
title |
Improving surface melt estimation over the Antarctic Ice Sheet using deep learning: a proof of concept over the Larsen Ice Shelf |
title_short |
Improving surface melt estimation over the Antarctic Ice Sheet using deep learning: a proof of concept over the Larsen Ice Shelf |
title_full |
Improving surface melt estimation over the Antarctic Ice Sheet using deep learning: a proof of concept over the Larsen Ice Shelf |
title_fullStr |
Improving surface melt estimation over the Antarctic Ice Sheet using deep learning: a proof of concept over the Larsen Ice Shelf |
title_full_unstemmed |
Improving surface melt estimation over the Antarctic Ice Sheet using deep learning: a proof of concept over the Larsen Ice Shelf |
title_sort |
improving surface melt estimation over the antarctic ice sheet using deep learning: a proof of concept over the larsen ice shelf |
publisher |
Copernicus Publications |
publishDate |
2021 |
url |
https://doi.org/10.5194/tc-15-5639-2021 https://doaj.org/article/5fff1173dabd42d19fad2e57014bdfe4 |
long_lat |
ENVELOPE(-62.500,-62.500,-67.500,-67.500) |
geographic |
Antarctic The Antarctic Larsen Ice Shelf |
geographic_facet |
Antarctic The Antarctic Larsen Ice Shelf |
genre |
Antarc* Antarctic Antarctica Ice Sheet Ice Shelf Ice Shelves Larsen Ice Shelf The Cryosphere |
genre_facet |
Antarc* Antarctic Antarctica Ice Sheet Ice Shelf Ice Shelves Larsen Ice Shelf The Cryosphere |
op_source |
The Cryosphere, Vol 15, Pp 5639-5658 (2021) |
op_relation |
https://tc.copernicus.org/articles/15/5639/2021/tc-15-5639-2021.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-15-5639-2021 1994-0416 1994-0424 https://doaj.org/article/5fff1173dabd42d19fad2e57014bdfe4 |
op_doi |
https://doi.org/10.5194/tc-15-5639-2021 |
container_title |
The Cryosphere |
container_volume |
15 |
container_issue |
12 |
container_start_page |
5639 |
op_container_end_page |
5658 |
_version_ |
1766274190390853632 |