In situ sounding of radiative flux profiles through the Arctic lower troposphere
In situ profiles and fixed-altitude time series of all four components of net radiation were obtained at Ny-Ålesund, Svalbard (78.9° N, 11.9° E), in the period May 04–21, 2015. Measurements were performed using adapted high-quality instrumentation classified as “secondary standard” carried by a teth...
Published in: | Bulletin of Atmospheric Science and Technology |
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Online Access: | https://epic.awi.de/id/eprint/52016/ https://epic.awi.de/id/eprint/52016/1/s42865-020-00011-8.pdf https://link.springer.com/content/pdf/10.1007/s42865-020-00011-8.pdf https://hdl.handle.net/10013/epic.b80ddb62-d4ac-46c3-9b6f-a7b0cf0dfe94 https://hdl.handle.net/ |
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ftawi:oai:epic.awi.de:52016 2023-05-15T13:10:50+02:00 In situ sounding of radiative flux profiles through the Arctic lower troposphere Becker, Ralf Maturilli, Marion Philipona, Rolf Behrens, Klaus 2020-05-15 application/pdf https://epic.awi.de/id/eprint/52016/ https://epic.awi.de/id/eprint/52016/1/s42865-020-00011-8.pdf https://link.springer.com/content/pdf/10.1007/s42865-020-00011-8.pdf https://hdl.handle.net/10013/epic.b80ddb62-d4ac-46c3-9b6f-a7b0cf0dfe94 https://hdl.handle.net/ unknown Springer https://epic.awi.de/id/eprint/52016/1/s42865-020-00011-8.pdf https://hdl.handle.net/ Becker, R. , Maturilli, M. orcid:0000-0001-6818-7383 , Philipona, R. and Behrens, K. (2020) In situ sounding of radiative flux profiles through the Arctic lower troposphere , Bulletin of Atmospheric Science and Technology . doi:10.1007/s42865-020-00011-8 <https://doi.org/10.1007/s42865-020-00011-8> , hdl:10013/epic.b80ddb62-d4ac-46c3-9b6f-a7b0cf0dfe94 EPIC3Bulletin of Atmospheric Science and Technology, Springer, ISSN: 2662-1495 Article isiRev 2020 ftawi https://doi.org/10.1007/s42865-020-00011-8 2021-12-24T15:45:33Z In situ profiles and fixed-altitude time series of all four components of net radiation were obtained at Ny-Ålesund, Svalbard (78.9° N, 11.9° E), in the period May 04–21, 2015. Measurements were performed using adapted high-quality instrumentation classified as “secondary standard” carried by a tethered balloon system. Balloon-lifted measurements of albedo under clear-sky conditions demonstrate the local dependence on altitude and on the surface inhomogeneity of this parameter over coastal terrain of Ny-Ålesund. Depending on the surface composition within the sensor’s footprint near the coastline, the albedo over predominantly snow-covered surfaces was found to decrease to 0.548 and 0.452 at 494 m and 881 m altitude compared with 0.731 and 0.788 measured with near-surface references, respectively. Albedo profiles show an all-sky maximum at 150 m above surface level due to local surface inhomogeneity, and an averaged vertical change rate of − 0.040/100 up to 750 m aboveground level (clear sky) and − 0.034/100 m (overcast). Profiling of arctic low-level clouds reveals distinct vertical gradients in all radiative fluxes but longwave upward at the cloud top. Observed radiative cooling at the top of a partly dissolving stratus cloud with heating rates of − 40.4 to − 62.1 Kd−1 in subsequent observations is exemplified. Article in Journal/Newspaper albedo Arctic Arctic Ny Ålesund Ny-Ålesund Svalbard Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Arctic Svalbard Ny-Ålesund Bulletin of Atmospheric Science and Technology 1 2 155 177 |
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 |
In situ profiles and fixed-altitude time series of all four components of net radiation were obtained at Ny-Ålesund, Svalbard (78.9° N, 11.9° E), in the period May 04–21, 2015. Measurements were performed using adapted high-quality instrumentation classified as “secondary standard” carried by a tethered balloon system. Balloon-lifted measurements of albedo under clear-sky conditions demonstrate the local dependence on altitude and on the surface inhomogeneity of this parameter over coastal terrain of Ny-Ålesund. Depending on the surface composition within the sensor’s footprint near the coastline, the albedo over predominantly snow-covered surfaces was found to decrease to 0.548 and 0.452 at 494 m and 881 m altitude compared with 0.731 and 0.788 measured with near-surface references, respectively. Albedo profiles show an all-sky maximum at 150 m above surface level due to local surface inhomogeneity, and an averaged vertical change rate of − 0.040/100 up to 750 m aboveground level (clear sky) and − 0.034/100 m (overcast). Profiling of arctic low-level clouds reveals distinct vertical gradients in all radiative fluxes but longwave upward at the cloud top. Observed radiative cooling at the top of a partly dissolving stratus cloud with heating rates of − 40.4 to − 62.1 Kd−1 in subsequent observations is exemplified. |
format |
Article in Journal/Newspaper |
author |
Becker, Ralf Maturilli, Marion Philipona, Rolf Behrens, Klaus |
spellingShingle |
Becker, Ralf Maturilli, Marion Philipona, Rolf Behrens, Klaus In situ sounding of radiative flux profiles through the Arctic lower troposphere |
author_facet |
Becker, Ralf Maturilli, Marion Philipona, Rolf Behrens, Klaus |
author_sort |
Becker, Ralf |
title |
In situ sounding of radiative flux profiles through the Arctic lower troposphere |
title_short |
In situ sounding of radiative flux profiles through the Arctic lower troposphere |
title_full |
In situ sounding of radiative flux profiles through the Arctic lower troposphere |
title_fullStr |
In situ sounding of radiative flux profiles through the Arctic lower troposphere |
title_full_unstemmed |
In situ sounding of radiative flux profiles through the Arctic lower troposphere |
title_sort |
in situ sounding of radiative flux profiles through the arctic lower troposphere |
publisher |
Springer |
publishDate |
2020 |
url |
https://epic.awi.de/id/eprint/52016/ https://epic.awi.de/id/eprint/52016/1/s42865-020-00011-8.pdf https://link.springer.com/content/pdf/10.1007/s42865-020-00011-8.pdf https://hdl.handle.net/10013/epic.b80ddb62-d4ac-46c3-9b6f-a7b0cf0dfe94 https://hdl.handle.net/ |
geographic |
Arctic Svalbard Ny-Ålesund |
geographic_facet |
Arctic Svalbard Ny-Ålesund |
genre |
albedo Arctic Arctic Ny Ålesund Ny-Ålesund Svalbard |
genre_facet |
albedo Arctic Arctic Ny Ålesund Ny-Ålesund Svalbard |
op_source |
EPIC3Bulletin of Atmospheric Science and Technology, Springer, ISSN: 2662-1495 |
op_relation |
https://epic.awi.de/id/eprint/52016/1/s42865-020-00011-8.pdf https://hdl.handle.net/ Becker, R. , Maturilli, M. orcid:0000-0001-6818-7383 , Philipona, R. and Behrens, K. (2020) In situ sounding of radiative flux profiles through the Arctic lower troposphere , Bulletin of Atmospheric Science and Technology . doi:10.1007/s42865-020-00011-8 <https://doi.org/10.1007/s42865-020-00011-8> , hdl:10013/epic.b80ddb62-d4ac-46c3-9b6f-a7b0cf0dfe94 |
op_doi |
https://doi.org/10.1007/s42865-020-00011-8 |
container_title |
Bulletin of Atmospheric Science and Technology |
container_volume |
1 |
container_issue |
2 |
container_start_page |
155 |
op_container_end_page |
177 |
_version_ |
1766244577252999168 |