Reconciling aerosol light extinction measurements from spaceborne lidar observations and in situ measurements in the Arctic
© Author(s) 2014. This work is distributed under the Creative Commons Attribution 3.0 License. In this study we investigate to what degree it is possible to reconcile continuously recorded particle light extinction coefficients derived from dry in situ measurements at Zeppelin station (78.92° N, 11....
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ftunivhertford:oai:uhra.herts.ac.uk:2299/16236 2024-05-19T07:33:17+00:00 Reconciling aerosol light extinction measurements from spaceborne lidar observations and in situ measurements in the Arctic Tesche, Matthias Zieger, P. Rastak, N. Charlson, R. J. Glantz, P. Tunved, P. Hansson, H. C. School of Physics, Astronomy and Mathematics 2014-08-08 14 702602 http://hdl.handle.net/2299/16236 eng eng Atmospheric Chemistry and Physics Tesche , M , Zieger , P , Rastak , N , Charlson , R J , Glantz , P , Tunved , P & Hansson , H C 2014 , ' Reconciling aerosol light extinction measurements from spaceborne lidar observations and in situ measurements in the Arctic ' , Atmospheric Chemistry and Physics , vol. 14 , no. 15 , pp. 7869-7882 . https://doi.org/10.5194/acp-14-7869-2014 1680-7316 http://hdl.handle.net/2299/16236 Atmospheric Science 2014 ftunivhertford 2024-04-30T23:36:08Z © Author(s) 2014. This work is distributed under the Creative Commons Attribution 3.0 License. In this study we investigate to what degree it is possible to reconcile continuously recorded particle light extinction coefficients derived from dry in situ measurements at Zeppelin station (78.92° N, 11.85° E; 475 m above sea level), Ny-Ålesund, Svalbard, that are recalculated to ambient relative humidity, as well as simultaneous ambient observations with the Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP) aboard the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO) satellite. To our knowledge, this represents the first study that compares spaceborne lidar measurements to optical aerosol properties from short-term in situ observations (averaged over 5 h) on a case-by-case basis. Finding suitable comparison cases requires an elaborate screening and matching of the CALIOP data with respect to the location of Zeppelin station as well as the selection of temporal and spatial averaging intervals for both the ground-based and spaceborne observations. Reliable reconciliation of these data cannot be achieved with the closest-approach method, which is often used in matching CALIOP observations to those taken at ground sites. This is due to the transport pathways of the air parcels that were sampled. The use of trajectories allowed us to establish a connection between spaceborne and ground-based observations for 57 individual overpasses out of a total of 2018 that occurred in our region of interest around Svalbard (0 to 25° E, 75 to 82° N) in the considered year of 2008. Matches could only be established during winter and spring, since the low aerosol load during summer in connection with the strong solar background and the high occurrence rate of clouds strongly influences the performance and reliability of CALIOP observations. Extinction coefficients in the range of 2 to 130 Mmg-1 at 532 nm were found for successful matches with a difference of a factor of 1.47 (median value for a range ... Other/Unknown Material Arctic Arctic Ny Ålesund Ny-Ålesund Svalbard University of Hertfordshire: UH Research Archive Atmospheric Chemistry and Physics 14 15 7869 7882 |
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Open Polar |
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University of Hertfordshire: UH Research Archive |
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ftunivhertford |
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English |
topic |
Atmospheric Science |
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Atmospheric Science Tesche, Matthias Zieger, P. Rastak, N. Charlson, R. J. Glantz, P. Tunved, P. Hansson, H. C. Reconciling aerosol light extinction measurements from spaceborne lidar observations and in situ measurements in the Arctic |
topic_facet |
Atmospheric Science |
description |
© Author(s) 2014. This work is distributed under the Creative Commons Attribution 3.0 License. In this study we investigate to what degree it is possible to reconcile continuously recorded particle light extinction coefficients derived from dry in situ measurements at Zeppelin station (78.92° N, 11.85° E; 475 m above sea level), Ny-Ålesund, Svalbard, that are recalculated to ambient relative humidity, as well as simultaneous ambient observations with the Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP) aboard the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO) satellite. To our knowledge, this represents the first study that compares spaceborne lidar measurements to optical aerosol properties from short-term in situ observations (averaged over 5 h) on a case-by-case basis. Finding suitable comparison cases requires an elaborate screening and matching of the CALIOP data with respect to the location of Zeppelin station as well as the selection of temporal and spatial averaging intervals for both the ground-based and spaceborne observations. Reliable reconciliation of these data cannot be achieved with the closest-approach method, which is often used in matching CALIOP observations to those taken at ground sites. This is due to the transport pathways of the air parcels that were sampled. The use of trajectories allowed us to establish a connection between spaceborne and ground-based observations for 57 individual overpasses out of a total of 2018 that occurred in our region of interest around Svalbard (0 to 25° E, 75 to 82° N) in the considered year of 2008. Matches could only be established during winter and spring, since the low aerosol load during summer in connection with the strong solar background and the high occurrence rate of clouds strongly influences the performance and reliability of CALIOP observations. Extinction coefficients in the range of 2 to 130 Mmg-1 at 532 nm were found for successful matches with a difference of a factor of 1.47 (median value for a range ... |
author2 |
School of Physics, Astronomy and Mathematics |
author |
Tesche, Matthias Zieger, P. Rastak, N. Charlson, R. J. Glantz, P. Tunved, P. Hansson, H. C. |
author_facet |
Tesche, Matthias Zieger, P. Rastak, N. Charlson, R. J. Glantz, P. Tunved, P. Hansson, H. C. |
author_sort |
Tesche, Matthias |
title |
Reconciling aerosol light extinction measurements from spaceborne lidar observations and in situ measurements in the Arctic |
title_short |
Reconciling aerosol light extinction measurements from spaceborne lidar observations and in situ measurements in the Arctic |
title_full |
Reconciling aerosol light extinction measurements from spaceborne lidar observations and in situ measurements in the Arctic |
title_fullStr |
Reconciling aerosol light extinction measurements from spaceborne lidar observations and in situ measurements in the Arctic |
title_full_unstemmed |
Reconciling aerosol light extinction measurements from spaceborne lidar observations and in situ measurements in the Arctic |
title_sort |
reconciling aerosol light extinction measurements from spaceborne lidar observations and in situ measurements in the arctic |
publishDate |
2014 |
url |
http://hdl.handle.net/2299/16236 |
genre |
Arctic Arctic Ny Ålesund Ny-Ålesund Svalbard |
genre_facet |
Arctic Arctic Ny Ålesund Ny-Ålesund Svalbard |
op_relation |
Atmospheric Chemistry and Physics Tesche , M , Zieger , P , Rastak , N , Charlson , R J , Glantz , P , Tunved , P & Hansson , H C 2014 , ' Reconciling aerosol light extinction measurements from spaceborne lidar observations and in situ measurements in the Arctic ' , Atmospheric Chemistry and Physics , vol. 14 , no. 15 , pp. 7869-7882 . https://doi.org/10.5194/acp-14-7869-2014 1680-7316 http://hdl.handle.net/2299/16236 |
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Atmospheric Chemistry and Physics |
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14 |
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15 |
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7869 |
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7882 |
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1799471368825208832 |