Assessment of Arctic seasonal snow cover rates of change
Arctic snow cover extent (SCE) trends and rates of change reported across recent climate assessments vary due to the time period of available data, the selection of snow products, and methodological considerations. While all reported trends are strongly negative during spring, more uncertainty exist...
Published in: | The Cryosphere |
---|---|
Main Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications
2023
|
Subjects: | |
Online Access: | https://doi.org/10.5194/tc-17-1431-2023 https://doaj.org/article/73f6b689705b455b99987049b56673f2 |
id |
ftdoajarticles:oai:doaj.org/article:73f6b689705b455b99987049b56673f2 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:73f6b689705b455b99987049b56673f2 2023-05-15T14:54:20+02:00 Assessment of Arctic seasonal snow cover rates of change C. Derksen L. Mudryk 2023-04-01T00:00:00Z https://doi.org/10.5194/tc-17-1431-2023 https://doaj.org/article/73f6b689705b455b99987049b56673f2 EN eng Copernicus Publications https://tc.copernicus.org/articles/17/1431/2023/tc-17-1431-2023.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-17-1431-2023 1994-0416 1994-0424 https://doaj.org/article/73f6b689705b455b99987049b56673f2 The Cryosphere, Vol 17, Pp 1431-1443 (2023) Environmental sciences GE1-350 Geology QE1-996.5 article 2023 ftdoajarticles https://doi.org/10.5194/tc-17-1431-2023 2023-04-09T00:34:57Z Arctic snow cover extent (SCE) trends and rates of change reported across recent climate assessments vary due to the time period of available data, the selection of snow products, and methodological considerations. While all reported trends are strongly negative during spring, more uncertainty exists in autumn. Motivated to increase the confidence in SCE trends reported in climate assessments, we quantify the impact of (1) year-over-year increases in time series length over the past 2 decades, (2) the choice of reference period, (3) the application of a statistical methodology to improve inter-dataset agreement, (4) the dataset ensemble size, and (5) product version changes. Results show that the rate of change during May and June has remained consistent over the past decade as time series length has increased and is largely insensitive to the choice of reference period. Although new product versions have increased spatial resolution, use more advanced reanalysis meteorology to force snow models, and include improved remote sensing retrieval algorithms, these enhancements do not result in any notable changes in the observed rate of Arctic SCE change in any month compared to a baseline set of older products. The most impactful analysis decision involves the scaling of dataset climatologies using an updated version of the NOAA snow chart climate data record as the baseline. While minor for most months, this adjustment can influence the calculated rate of change for June by a factor of 2 relative to different climatological baselines. Article in Journal/Newspaper Arctic The Cryosphere Directory of Open Access Journals: DOAJ Articles Arctic The Cryosphere 17 4 1431 1443 |
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 C. Derksen L. Mudryk Assessment of Arctic seasonal snow cover rates of change |
topic_facet |
Environmental sciences GE1-350 Geology QE1-996.5 |
description |
Arctic snow cover extent (SCE) trends and rates of change reported across recent climate assessments vary due to the time period of available data, the selection of snow products, and methodological considerations. While all reported trends are strongly negative during spring, more uncertainty exists in autumn. Motivated to increase the confidence in SCE trends reported in climate assessments, we quantify the impact of (1) year-over-year increases in time series length over the past 2 decades, (2) the choice of reference period, (3) the application of a statistical methodology to improve inter-dataset agreement, (4) the dataset ensemble size, and (5) product version changes. Results show that the rate of change during May and June has remained consistent over the past decade as time series length has increased and is largely insensitive to the choice of reference period. Although new product versions have increased spatial resolution, use more advanced reanalysis meteorology to force snow models, and include improved remote sensing retrieval algorithms, these enhancements do not result in any notable changes in the observed rate of Arctic SCE change in any month compared to a baseline set of older products. The most impactful analysis decision involves the scaling of dataset climatologies using an updated version of the NOAA snow chart climate data record as the baseline. While minor for most months, this adjustment can influence the calculated rate of change for June by a factor of 2 relative to different climatological baselines. |
format |
Article in Journal/Newspaper |
author |
C. Derksen L. Mudryk |
author_facet |
C. Derksen L. Mudryk |
author_sort |
C. Derksen |
title |
Assessment of Arctic seasonal snow cover rates of change |
title_short |
Assessment of Arctic seasonal snow cover rates of change |
title_full |
Assessment of Arctic seasonal snow cover rates of change |
title_fullStr |
Assessment of Arctic seasonal snow cover rates of change |
title_full_unstemmed |
Assessment of Arctic seasonal snow cover rates of change |
title_sort |
assessment of arctic seasonal snow cover rates of change |
publisher |
Copernicus Publications |
publishDate |
2023 |
url |
https://doi.org/10.5194/tc-17-1431-2023 https://doaj.org/article/73f6b689705b455b99987049b56673f2 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic The Cryosphere |
genre_facet |
Arctic The Cryosphere |
op_source |
The Cryosphere, Vol 17, Pp 1431-1443 (2023) |
op_relation |
https://tc.copernicus.org/articles/17/1431/2023/tc-17-1431-2023.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-17-1431-2023 1994-0416 1994-0424 https://doaj.org/article/73f6b689705b455b99987049b56673f2 |
op_doi |
https://doi.org/10.5194/tc-17-1431-2023 |
container_title |
The Cryosphere |
container_volume |
17 |
container_issue |
4 |
container_start_page |
1431 |
op_container_end_page |
1443 |
_version_ |
1766326052133535744 |