Photolysis Rate Coefficient Calculations in Support of SOLVE II
A quantitative understanding of photolysis rate coefficients (or "j-values") is essential to determining the photochemical reaction rates that define ozone loss and other crucial processes in the atmosphere. j-Values can be calculated with radiative transfer models, derived from actinic fl...
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ftnasantrs:oai:casi.ntrs.nasa.gov:20050167079 2023-05-15T13:11:54+02:00 Photolysis Rate Coefficient Calculations in Support of SOLVE II Swartz, William H. Unclassified, Unlimited, Publicly available April 21, 2005 application/pdf http://hdl.handle.net/2060/20050167079 unknown Document ID: 20050167079 http://hdl.handle.net/2060/20050167079 No Copyright CASI Earth Resources and Remote Sensing 2005 ftnasantrs 2019-07-21T07:38:34Z A quantitative understanding of photolysis rate coefficients (or "j-values") is essential to determining the photochemical reaction rates that define ozone loss and other crucial processes in the atmosphere. j-Values can be calculated with radiative transfer models, derived from actinic flux observations, or inferred from trace gas measurements. The primary objective of the present effort was the accurate calculation of j-values in the Arctic twilight along NASA DC-8 flight tracks during the second SAGE III Ozone Loss and Validation Experiment (SOLVE II), based in Kiruna, Sweden (68 degrees N, 20 degrees E) during January-February 2003. The JHU/APL radiative transfer model was utilized to produce a large suite of j-values for photolysis processes (over 70 reactions) relevant to the upper troposphere and lower stratosphere. The calculations take into account the actual changes in ozone abundance and apparent albedo of clouds and the Earth surface along the aircraft flight tracks as observed by in situ and remote sensing platforms (e.g., EP-TOMS). A secondary objective was to analyze solar irradiance data from NCAR s Direct beam Irradiance Atmospheric Spectrometer (DIAS) on-board the NASA DC-8 and to start the development of a flexible, multi-species spectral fitting technique for the independent retrieval of O3,O2.02, and aerosol optical properties. Other/Unknown Material albedo Arctic Kiruna NASA Technical Reports Server (NTRS) Arctic Kiruna |
institution |
Open Polar |
collection |
NASA Technical Reports Server (NTRS) |
op_collection_id |
ftnasantrs |
language |
unknown |
topic |
Earth Resources and Remote Sensing |
spellingShingle |
Earth Resources and Remote Sensing Swartz, William H. Photolysis Rate Coefficient Calculations in Support of SOLVE II |
topic_facet |
Earth Resources and Remote Sensing |
description |
A quantitative understanding of photolysis rate coefficients (or "j-values") is essential to determining the photochemical reaction rates that define ozone loss and other crucial processes in the atmosphere. j-Values can be calculated with radiative transfer models, derived from actinic flux observations, or inferred from trace gas measurements. The primary objective of the present effort was the accurate calculation of j-values in the Arctic twilight along NASA DC-8 flight tracks during the second SAGE III Ozone Loss and Validation Experiment (SOLVE II), based in Kiruna, Sweden (68 degrees N, 20 degrees E) during January-February 2003. The JHU/APL radiative transfer model was utilized to produce a large suite of j-values for photolysis processes (over 70 reactions) relevant to the upper troposphere and lower stratosphere. The calculations take into account the actual changes in ozone abundance and apparent albedo of clouds and the Earth surface along the aircraft flight tracks as observed by in situ and remote sensing platforms (e.g., EP-TOMS). A secondary objective was to analyze solar irradiance data from NCAR s Direct beam Irradiance Atmospheric Spectrometer (DIAS) on-board the NASA DC-8 and to start the development of a flexible, multi-species spectral fitting technique for the independent retrieval of O3,O2.02, and aerosol optical properties. |
author |
Swartz, William H. |
author_facet |
Swartz, William H. |
author_sort |
Swartz, William H. |
title |
Photolysis Rate Coefficient Calculations in Support of SOLVE II |
title_short |
Photolysis Rate Coefficient Calculations in Support of SOLVE II |
title_full |
Photolysis Rate Coefficient Calculations in Support of SOLVE II |
title_fullStr |
Photolysis Rate Coefficient Calculations in Support of SOLVE II |
title_full_unstemmed |
Photolysis Rate Coefficient Calculations in Support of SOLVE II |
title_sort |
photolysis rate coefficient calculations in support of solve ii |
publishDate |
2005 |
url |
http://hdl.handle.net/2060/20050167079 |
op_coverage |
Unclassified, Unlimited, Publicly available |
geographic |
Arctic Kiruna |
geographic_facet |
Arctic Kiruna |
genre |
albedo Arctic Kiruna |
genre_facet |
albedo Arctic Kiruna |
op_source |
CASI |
op_relation |
Document ID: 20050167079 http://hdl.handle.net/2060/20050167079 |
op_rights |
No Copyright |
_version_ |
1766249429904392192 |