Airborne observations of far-infrared upwelling radiance in the Arctic
The first airborne measurements of the Far- InfraRed Radiometer (FIRR) were performed in April 2015 during the panarctic NETCARE campaign. Vertical profiles of spectral upwelling radiance in the range 8–50 μm were measured in clear and cloudy conditions from the surface up to 6 km. The clear sky pro...
Published in: | Atmospheric Chemistry and Physics |
---|---|
Main Authors: | , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
COPERNICUS GESELLSCHAFT MBH
2016
|
Subjects: | |
Online Access: | https://epic.awi.de/id/eprint/42975/ https://epic.awi.de/id/eprint/42975/1/acp-16-15689-2016.pdf http://www.atmos-chem-phys.net/16/15689/2016/ https://hdl.handle.net/10013/epic.49520 https://hdl.handle.net/10013/epic.49520.d001 |
id |
ftawi:oai:epic.awi.de:42975 |
---|---|
record_format |
openpolar |
spelling |
ftawi:oai:epic.awi.de:42975 2023-05-15T14:27:57+02:00 Airborne observations of far-infrared upwelling radiance in the Arctic Libois, Quentin Ivanescu, Liviu Blanchet, Jean-Pierre Schulz, Hannes Bozem, Heiko Leaitch, W. Richard Burkart, Julia Abbatt, Jonathan P.D. Herber, Andreas Aliabadi, Amir A. Girard, Eric 2016-12 application/pdf https://epic.awi.de/id/eprint/42975/ https://epic.awi.de/id/eprint/42975/1/acp-16-15689-2016.pdf http://www.atmos-chem-phys.net/16/15689/2016/ https://hdl.handle.net/10013/epic.49520 https://hdl.handle.net/10013/epic.49520.d001 unknown COPERNICUS GESELLSCHAFT MBH https://epic.awi.de/id/eprint/42975/1/acp-16-15689-2016.pdf https://hdl.handle.net/10013/epic.49520.d001 Libois, Q. , Ivanescu, L. , Blanchet, J. P. , Schulz, H. orcid:0000-0002-5151-6467 , Bozem, H. , Leaitch, W. R. , Burkart, J. , Abbatt, J. P. , Herber, A. orcid:0000-0001-6651-3835 , Aliabadi, A. A. and Girard, E. (2016) Airborne observations of far-infrared upwelling radiance in the Arctic , Atmospheric Chemistry and Physics, 16 , pp. 15689-15707 . doi:10.5194/acp-16-15689-2016 <https://doi.org/10.5194/acp-16-15689-2016> , hdl:10013/epic.49520 EPIC3Atmospheric Chemistry and Physics, COPERNICUS GESELLSCHAFT MBH, 16, pp. 15689-15707, ISSN: 1680-7316 Article peerRev 2016 ftawi https://doi.org/10.5194/acp-16-15689-2016 2021-12-24T15:42:19Z The first airborne measurements of the Far- InfraRed Radiometer (FIRR) were performed in April 2015 during the panarctic NETCARE campaign. Vertical profiles of spectral upwelling radiance in the range 8–50 μm were measured in clear and cloudy conditions from the surface up to 6 km. The clear sky profiles highlight the strong dependence of radiative fluxes to the temperature inversion typical of the Arctic. Measurements acquired for total column water vapour from 1.5 to 10.5mm also underline the sensitivity of the far-infrared greenhouse effect to specific humidity. The cloudy cases show that optically thin ice clouds increase the cooling rate of the atmosphere, making them important pieces of the Arctic energy balance. One such cloud exhibited a very complex spatial structure, characterized by large horizontal heterogeneities at the kilometre scale. This emphasizes the difficulty of obtaining representative cloud observations with airborne measurements but also points out how challenging it is to model polar clouds radiative effects. These radiance measurements were successfully compared to simulations, suggesting that state-of-the-art radiative transfer models are suited to study the cold and dry Arctic atmosphere. Although FIRR in situ performances compare well to its laboratory performances, complementary simulations show that upgrading the FIRR radiometric resolution would greatly increase its sensitivity to atmospheric and cloud properties. Improved instrument temperature stability in flight and expected technological progress should help meet this objective. The campaign overall highlights the potential for airborne far-infrared radiometry and constitutes a relevant reference for future similar studies dedicated to the Arctic and for the development of spaceborne instruments. Article in Journal/Newspaper Arctic Arctic Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Arctic Atmospheric Chemistry and Physics 16 24 15689 15707 |
institution |
Open Polar |
collection |
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
The first airborne measurements of the Far- InfraRed Radiometer (FIRR) were performed in April 2015 during the panarctic NETCARE campaign. Vertical profiles of spectral upwelling radiance in the range 8–50 μm were measured in clear and cloudy conditions from the surface up to 6 km. The clear sky profiles highlight the strong dependence of radiative fluxes to the temperature inversion typical of the Arctic. Measurements acquired for total column water vapour from 1.5 to 10.5mm also underline the sensitivity of the far-infrared greenhouse effect to specific humidity. The cloudy cases show that optically thin ice clouds increase the cooling rate of the atmosphere, making them important pieces of the Arctic energy balance. One such cloud exhibited a very complex spatial structure, characterized by large horizontal heterogeneities at the kilometre scale. This emphasizes the difficulty of obtaining representative cloud observations with airborne measurements but also points out how challenging it is to model polar clouds radiative effects. These radiance measurements were successfully compared to simulations, suggesting that state-of-the-art radiative transfer models are suited to study the cold and dry Arctic atmosphere. Although FIRR in situ performances compare well to its laboratory performances, complementary simulations show that upgrading the FIRR radiometric resolution would greatly increase its sensitivity to atmospheric and cloud properties. Improved instrument temperature stability in flight and expected technological progress should help meet this objective. The campaign overall highlights the potential for airborne far-infrared radiometry and constitutes a relevant reference for future similar studies dedicated to the Arctic and for the development of spaceborne instruments. |
format |
Article in Journal/Newspaper |
author |
Libois, Quentin Ivanescu, Liviu Blanchet, Jean-Pierre Schulz, Hannes Bozem, Heiko Leaitch, W. Richard Burkart, Julia Abbatt, Jonathan P.D. Herber, Andreas Aliabadi, Amir A. Girard, Eric |
spellingShingle |
Libois, Quentin Ivanescu, Liviu Blanchet, Jean-Pierre Schulz, Hannes Bozem, Heiko Leaitch, W. Richard Burkart, Julia Abbatt, Jonathan P.D. Herber, Andreas Aliabadi, Amir A. Girard, Eric Airborne observations of far-infrared upwelling radiance in the Arctic |
author_facet |
Libois, Quentin Ivanescu, Liviu Blanchet, Jean-Pierre Schulz, Hannes Bozem, Heiko Leaitch, W. Richard Burkart, Julia Abbatt, Jonathan P.D. Herber, Andreas Aliabadi, Amir A. Girard, Eric |
author_sort |
Libois, Quentin |
title |
Airborne observations of far-infrared upwelling radiance in the Arctic |
title_short |
Airborne observations of far-infrared upwelling radiance in the Arctic |
title_full |
Airborne observations of far-infrared upwelling radiance in the Arctic |
title_fullStr |
Airborne observations of far-infrared upwelling radiance in the Arctic |
title_full_unstemmed |
Airborne observations of far-infrared upwelling radiance in the Arctic |
title_sort |
airborne observations of far-infrared upwelling radiance in the arctic |
publisher |
COPERNICUS GESELLSCHAFT MBH |
publishDate |
2016 |
url |
https://epic.awi.de/id/eprint/42975/ https://epic.awi.de/id/eprint/42975/1/acp-16-15689-2016.pdf http://www.atmos-chem-phys.net/16/15689/2016/ https://hdl.handle.net/10013/epic.49520 https://hdl.handle.net/10013/epic.49520.d001 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Arctic |
genre_facet |
Arctic Arctic |
op_source |
EPIC3Atmospheric Chemistry and Physics, COPERNICUS GESELLSCHAFT MBH, 16, pp. 15689-15707, ISSN: 1680-7316 |
op_relation |
https://epic.awi.de/id/eprint/42975/1/acp-16-15689-2016.pdf https://hdl.handle.net/10013/epic.49520.d001 Libois, Q. , Ivanescu, L. , Blanchet, J. P. , Schulz, H. orcid:0000-0002-5151-6467 , Bozem, H. , Leaitch, W. R. , Burkart, J. , Abbatt, J. P. , Herber, A. orcid:0000-0001-6651-3835 , Aliabadi, A. A. and Girard, E. (2016) Airborne observations of far-infrared upwelling radiance in the Arctic , Atmospheric Chemistry and Physics, 16 , pp. 15689-15707 . doi:10.5194/acp-16-15689-2016 <https://doi.org/10.5194/acp-16-15689-2016> , hdl:10013/epic.49520 |
op_doi |
https://doi.org/10.5194/acp-16-15689-2016 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
16 |
container_issue |
24 |
container_start_page |
15689 |
op_container_end_page |
15707 |
_version_ |
1766302056601092096 |