Low-level Arctic clouds: a blind zone in our knowledge of the radiation budget
Quantifying the role of clouds in the earth's radiation budget is essential for improving our understanding of the drivers and feedback mechanisms of climate change. This holds in particular for the Arctic, the region currently undergoing the most rapid changes. This region, however, also poses...
Published in: | Atmospheric Chemistry and Physics |
---|---|
Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications
2024
|
Subjects: | |
Online Access: | https://doi.org/10.5194/acp-24-597-2024 https://noa.gwlb.de/receive/cop_mods_00071033 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00069345/acp-24-597-2024.pdf https://acp.copernicus.org/articles/24/597/2024/acp-24-597-2024.pdf |
id |
ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00071033 |
---|---|
record_format |
openpolar |
spelling |
ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00071033 2024-02-11T10:00:33+01:00 Low-level Arctic clouds: a blind zone in our knowledge of the radiation budget Griesche, Hannes Jascha Barrientos-Velasco, Carola Deneke, Hartwig Hünerbein, Anja Seifert, Patric Macke, Andreas 2024-01 electronic https://doi.org/10.5194/acp-24-597-2024 https://noa.gwlb.de/receive/cop_mods_00071033 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00069345/acp-24-597-2024.pdf https://acp.copernicus.org/articles/24/597/2024/acp-24-597-2024.pdf eng eng Copernicus Publications Atmospheric Chemistry and Physics -- http://www.atmos-chem-phys.net/volumes_and_issues.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2069847 -- 1680-7324 https://doi.org/10.5194/acp-24-597-2024 https://noa.gwlb.de/receive/cop_mods_00071033 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00069345/acp-24-597-2024.pdf https://acp.copernicus.org/articles/24/597/2024/acp-24-597-2024.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2024 ftnonlinearchiv https://doi.org/10.5194/acp-24-597-2024 2024-01-22T00:22:46Z Quantifying the role of clouds in the earth's radiation budget is essential for improving our understanding of the drivers and feedback mechanisms of climate change. This holds in particular for the Arctic, the region currently undergoing the most rapid changes. This region, however, also poses significant challenges to remote-sensing retrievals of clouds and radiative fluxes, introducing large uncertainties in current climate data records. In particular, low-level stratiform clouds are common in the Arctic but are, due to their low altitude, challenging to observe and characterize with remote-sensing techniques. The availability of reliable ground-based observations as reference is thus of high importance. In the present study, radiative transfer simulations using state-of-the-art ground-based remote sensing of clouds are contrasted with surface radiative flux measurements to assess their ability to constrain the cloud radiative effect. Cloud radar, lidar, and microwave radiometer observations from the PS106 cruise in the Arctic marginal sea ice zone in summer 2017 were used to derive cloud micro- and macrophysical properties by means of the instrument synergy approach of Cloudnet. Closure of surface radiative fluxes can only be achieved by a realistic representation of the low-level liquid-containing clouds in the radiative transfer simulations. The original, most likely erroneous, representation of these low-level clouds in the radiative transfer simulations led to errors in the cloud radiative effect of 54 W m−2. In total, the proposed method could be applied to 11 % of the observations. For the data, where the proposed method was utilized, the average relative error decreased from 109 % to 37 % for the simulated solar and from 18 % to 2.5 % for the simulated terrestrial downward radiative fluxes at the surface. The present study highlights the importance of jointly improving retrievals for low-level liquid-containing clouds which are frequently encountered in the high Arctic, together with observational ... Article in Journal/Newspaper Arctic Climate change Sea ice Niedersächsisches Online-Archiv NOA Arctic Atmospheric Chemistry and Physics 24 1 597 612 |
institution |
Open Polar |
collection |
Niedersächsisches Online-Archiv NOA |
op_collection_id |
ftnonlinearchiv |
language |
English |
topic |
article Verlagsveröffentlichung |
spellingShingle |
article Verlagsveröffentlichung Griesche, Hannes Jascha Barrientos-Velasco, Carola Deneke, Hartwig Hünerbein, Anja Seifert, Patric Macke, Andreas Low-level Arctic clouds: a blind zone in our knowledge of the radiation budget |
topic_facet |
article Verlagsveröffentlichung |
description |
Quantifying the role of clouds in the earth's radiation budget is essential for improving our understanding of the drivers and feedback mechanisms of climate change. This holds in particular for the Arctic, the region currently undergoing the most rapid changes. This region, however, also poses significant challenges to remote-sensing retrievals of clouds and radiative fluxes, introducing large uncertainties in current climate data records. In particular, low-level stratiform clouds are common in the Arctic but are, due to their low altitude, challenging to observe and characterize with remote-sensing techniques. The availability of reliable ground-based observations as reference is thus of high importance. In the present study, radiative transfer simulations using state-of-the-art ground-based remote sensing of clouds are contrasted with surface radiative flux measurements to assess their ability to constrain the cloud radiative effect. Cloud radar, lidar, and microwave radiometer observations from the PS106 cruise in the Arctic marginal sea ice zone in summer 2017 were used to derive cloud micro- and macrophysical properties by means of the instrument synergy approach of Cloudnet. Closure of surface radiative fluxes can only be achieved by a realistic representation of the low-level liquid-containing clouds in the radiative transfer simulations. The original, most likely erroneous, representation of these low-level clouds in the radiative transfer simulations led to errors in the cloud radiative effect of 54 W m−2. In total, the proposed method could be applied to 11 % of the observations. For the data, where the proposed method was utilized, the average relative error decreased from 109 % to 37 % for the simulated solar and from 18 % to 2.5 % for the simulated terrestrial downward radiative fluxes at the surface. The present study highlights the importance of jointly improving retrievals for low-level liquid-containing clouds which are frequently encountered in the high Arctic, together with observational ... |
format |
Article in Journal/Newspaper |
author |
Griesche, Hannes Jascha Barrientos-Velasco, Carola Deneke, Hartwig Hünerbein, Anja Seifert, Patric Macke, Andreas |
author_facet |
Griesche, Hannes Jascha Barrientos-Velasco, Carola Deneke, Hartwig Hünerbein, Anja Seifert, Patric Macke, Andreas |
author_sort |
Griesche, Hannes Jascha |
title |
Low-level Arctic clouds: a blind zone in our knowledge of the radiation budget |
title_short |
Low-level Arctic clouds: a blind zone in our knowledge of the radiation budget |
title_full |
Low-level Arctic clouds: a blind zone in our knowledge of the radiation budget |
title_fullStr |
Low-level Arctic clouds: a blind zone in our knowledge of the radiation budget |
title_full_unstemmed |
Low-level Arctic clouds: a blind zone in our knowledge of the radiation budget |
title_sort |
low-level arctic clouds: a blind zone in our knowledge of the radiation budget |
publisher |
Copernicus Publications |
publishDate |
2024 |
url |
https://doi.org/10.5194/acp-24-597-2024 https://noa.gwlb.de/receive/cop_mods_00071033 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00069345/acp-24-597-2024.pdf https://acp.copernicus.org/articles/24/597/2024/acp-24-597-2024.pdf |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Climate change Sea ice |
genre_facet |
Arctic Climate change Sea ice |
op_relation |
Atmospheric Chemistry and Physics -- http://www.atmos-chem-phys.net/volumes_and_issues.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2069847 -- 1680-7324 https://doi.org/10.5194/acp-24-597-2024 https://noa.gwlb.de/receive/cop_mods_00071033 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00069345/acp-24-597-2024.pdf https://acp.copernicus.org/articles/24/597/2024/acp-24-597-2024.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/acp-24-597-2024 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
24 |
container_issue |
1 |
container_start_page |
597 |
op_container_end_page |
612 |
_version_ |
1790596275444383744 |