Polar radiant energy in the far-infrared experiment (prefire)
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ftunivillidea:oai:www.ideals.illinois.edu:2142/100641 2024-10-13T14:05:15+00:00 Polar radiant energy in the far-infrared experiment (prefire) Drouin, Brian L'Ecuyer, Tristan S 2018-06-21 http://hdl.handle.net/2142/100641 https://doi.org/10.15278/isms.2018.RI01 eng eng International Symposium on Molecular Spectroscopy APS RI01 http://hdl.handle.net/2142/100641 doi:10.15278/isms.2018.RI01 Copyright 2018 Brian Drouin Mini-symposium: Far-Infrared Spectroscopy text Conference Paper / Presentation 2018 ftunivillidea https://doi.org/10.15278/isms.2018.RI01 2024-10-01T12:57:45Z Made available in DSpace on 2018-08-17T16:09:24Z (GMT). No. of bitstreams: 2 2937.pdf: 313907 bytes, checksum: bb793030c9e6fdb1593803bbe60a4f72 (MD5) license.txt: 4802 bytes, checksum: 58353f9dd6876860dd5221f3d7872a95 (MD5) Previous issue date: 6 Made available in DSpace on 2018-12-12T22:35:29Z (GMT). No. of bitstreams: 4 2937.pdf.txt: 1730 bytes, checksum: c554269981f88a9c31f076ff55ef4fca (MD5) license.txt: 4802 bytes, checksum: 58353f9dd6876860dd5221f3d7872a95 (MD5) 2937.pdf: 313907 bytes, checksum: bb793030c9e6fdb1593803bbe60a4f72 (MD5) 1077879.pptx: 11360154 bytes, checksum: a7acaafe6f00b038258c436b90bf5622 (MD5) Previous issue date: 6 Much of the Far-infrared radiation (FIR) emitted by the earth surface is trapped primarily by the insulating greenhouse effect. At the poles, the greenhouse effect is minimized by the nominal cold and dry atmospheric state. This is how a significant amount of absorbed solar energy is vented back to space, acting like a thermostat. Under these conditions, the effects of surface emissivity become disproportionately large and have a significant impact on the radiative balance. Earth system models have consistently under-estimated the rapid warming occurring in the Arctic, perhaps due to poor assumptions about the nature of far-infrared spectral emissions. The Polar Radiant Energy in the Far-InfraRed Experiment (PREFIRE) is a NASA Earth Ventures mission, currently in formulation, that would test the hypothesis that time-varying errors in FIR surface emissivity and atmospheric greenhouse effects bias the modeled energy balance that under-estimates Arctic warming. This presentation covers the processes involved in the energy balance, and how spectrally resolved measurements provide the means to extract critical information. We also discuss the instrument difficulties associated with remote measurements across the far-infrared, emphasizing the differing challenges associated with earth science vs. astrophysics. Finally, we provide an overview of the planned PREFIRE mission and ... Conference Object Arctic University of Illinois at Urbana-Champaign: IDEALS (Illinois Digital Environment for Access to Learning and Scholarship) Arctic Proceedings of the 73rd International Symposium on Molecular Spectroscopy 1 1 |
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University of Illinois at Urbana-Champaign: IDEALS (Illinois Digital Environment for Access to Learning and Scholarship) |
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English |
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Mini-symposium: Far-Infrared Spectroscopy |
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Mini-symposium: Far-Infrared Spectroscopy Drouin, Brian Polar radiant energy in the far-infrared experiment (prefire) |
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Mini-symposium: Far-Infrared Spectroscopy |
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Made available in DSpace on 2018-08-17T16:09:24Z (GMT). No. of bitstreams: 2 2937.pdf: 313907 bytes, checksum: bb793030c9e6fdb1593803bbe60a4f72 (MD5) license.txt: 4802 bytes, checksum: 58353f9dd6876860dd5221f3d7872a95 (MD5) Previous issue date: 6 Made available in DSpace on 2018-12-12T22:35:29Z (GMT). No. of bitstreams: 4 2937.pdf.txt: 1730 bytes, checksum: c554269981f88a9c31f076ff55ef4fca (MD5) license.txt: 4802 bytes, checksum: 58353f9dd6876860dd5221f3d7872a95 (MD5) 2937.pdf: 313907 bytes, checksum: bb793030c9e6fdb1593803bbe60a4f72 (MD5) 1077879.pptx: 11360154 bytes, checksum: a7acaafe6f00b038258c436b90bf5622 (MD5) Previous issue date: 6 Much of the Far-infrared radiation (FIR) emitted by the earth surface is trapped primarily by the insulating greenhouse effect. At the poles, the greenhouse effect is minimized by the nominal cold and dry atmospheric state. This is how a significant amount of absorbed solar energy is vented back to space, acting like a thermostat. Under these conditions, the effects of surface emissivity become disproportionately large and have a significant impact on the radiative balance. Earth system models have consistently under-estimated the rapid warming occurring in the Arctic, perhaps due to poor assumptions about the nature of far-infrared spectral emissions. The Polar Radiant Energy in the Far-InfraRed Experiment (PREFIRE) is a NASA Earth Ventures mission, currently in formulation, that would test the hypothesis that time-varying errors in FIR surface emissivity and atmospheric greenhouse effects bias the modeled energy balance that under-estimates Arctic warming. This presentation covers the processes involved in the energy balance, and how spectrally resolved measurements provide the means to extract critical information. We also discuss the instrument difficulties associated with remote measurements across the far-infrared, emphasizing the differing challenges associated with earth science vs. astrophysics. Finally, we provide an overview of the planned PREFIRE mission and ... |
author2 |
L'Ecuyer, Tristan S |
format |
Conference Object |
author |
Drouin, Brian |
author_facet |
Drouin, Brian |
author_sort |
Drouin, Brian |
title |
Polar radiant energy in the far-infrared experiment (prefire) |
title_short |
Polar radiant energy in the far-infrared experiment (prefire) |
title_full |
Polar radiant energy in the far-infrared experiment (prefire) |
title_fullStr |
Polar radiant energy in the far-infrared experiment (prefire) |
title_full_unstemmed |
Polar radiant energy in the far-infrared experiment (prefire) |
title_sort |
polar radiant energy in the far-infrared experiment (prefire) |
publisher |
International Symposium on Molecular Spectroscopy |
publishDate |
2018 |
url |
http://hdl.handle.net/2142/100641 https://doi.org/10.15278/isms.2018.RI01 |
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Arctic |
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Arctic |
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Arctic |
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Arctic |
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APS RI01 http://hdl.handle.net/2142/100641 doi:10.15278/isms.2018.RI01 |
op_rights |
Copyright 2018 Brian Drouin |
op_doi |
https://doi.org/10.15278/isms.2018.RI01 |
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Proceedings of the 73rd International Symposium on Molecular Spectroscopy |
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1812811309999194112 |