Atmospheric distribution of Kr-85 simulated with a general circulation model
A three-dimensional chemical tracer model for the troposphere is used to simulate the global distribution of Kr-85, a long-lived radioisotope released at northern midlatitudes by nuclear industry. Simulated distributions for the period 1980-1983 are in excellent agreement with data from six latitudi...
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ftnasantrs:oai:casi.ntrs.nasa.gov:19870059203 2023-05-15T15:04:38+02:00 Atmospheric distribution of Kr-85 simulated with a general circulation model Jacob, Daniel J. Wofsy, Steven C. Mcelroy, Michael B. Prather, Michael J. Unclassified, Unlimited, Publicly available Jun 20, 1987 http://ntrs.nasa.gov/search.jsp?R=19870059203 unknown http://ntrs.nasa.gov/search.jsp?R=19870059203 Accession ID: 87A46477 Copyright Other Sources 45 Journal of Geophysical Research; 92; 6614-662 1987 ftnasantrs 2012-02-15T17:16:40Z A three-dimensional chemical tracer model for the troposphere is used to simulate the global distribution of Kr-85, a long-lived radioisotope released at northern midlatitudes by nuclear industry. Simulated distributions for the period 1980-1983 are in excellent agreement with data from six latitudinal profiles measured over the Atlantic. High concentrations of Kr-85 are predicted over the Arctic in winter, advected from European sources, and somewhat smaller enhancements arising from the same sources are predicted over the tropical Atlantic in summer. Latitudinal gradients are steepest in the northern tropics, with distinctly different seasonal variations over the Pacific, as compared to the Atlantic. The global inventory of Kr-85 is reconstructed for the period 1980-1983 by combining the concentrations measured over the Atlantic with the global distributions predicted by the model. The magnitude of the Soviet source is derived. The interhemispheric exchange time is calculated as 1.1 years, with little seasonal dependence. Other/Unknown Material Arctic NASA Technical Reports Server (NTRS) Arctic Pacific |
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NASA Technical Reports Server (NTRS) |
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45 |
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45 Jacob, Daniel J. Wofsy, Steven C. Mcelroy, Michael B. Prather, Michael J. Atmospheric distribution of Kr-85 simulated with a general circulation model |
topic_facet |
45 |
description |
A three-dimensional chemical tracer model for the troposphere is used to simulate the global distribution of Kr-85, a long-lived radioisotope released at northern midlatitudes by nuclear industry. Simulated distributions for the period 1980-1983 are in excellent agreement with data from six latitudinal profiles measured over the Atlantic. High concentrations of Kr-85 are predicted over the Arctic in winter, advected from European sources, and somewhat smaller enhancements arising from the same sources are predicted over the tropical Atlantic in summer. Latitudinal gradients are steepest in the northern tropics, with distinctly different seasonal variations over the Pacific, as compared to the Atlantic. The global inventory of Kr-85 is reconstructed for the period 1980-1983 by combining the concentrations measured over the Atlantic with the global distributions predicted by the model. The magnitude of the Soviet source is derived. The interhemispheric exchange time is calculated as 1.1 years, with little seasonal dependence. |
format |
Other/Unknown Material |
author |
Jacob, Daniel J. Wofsy, Steven C. Mcelroy, Michael B. Prather, Michael J. |
author_facet |
Jacob, Daniel J. Wofsy, Steven C. Mcelroy, Michael B. Prather, Michael J. |
author_sort |
Jacob, Daniel J. |
title |
Atmospheric distribution of Kr-85 simulated with a general circulation model |
title_short |
Atmospheric distribution of Kr-85 simulated with a general circulation model |
title_full |
Atmospheric distribution of Kr-85 simulated with a general circulation model |
title_fullStr |
Atmospheric distribution of Kr-85 simulated with a general circulation model |
title_full_unstemmed |
Atmospheric distribution of Kr-85 simulated with a general circulation model |
title_sort |
atmospheric distribution of kr-85 simulated with a general circulation model |
publishDate |
1987 |
url |
http://ntrs.nasa.gov/search.jsp?R=19870059203 |
op_coverage |
Unclassified, Unlimited, Publicly available |
geographic |
Arctic Pacific |
geographic_facet |
Arctic Pacific |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Other Sources |
op_relation |
http://ntrs.nasa.gov/search.jsp?R=19870059203 Accession ID: 87A46477 |
op_rights |
Copyright |
_version_ |
1766336370101452800 |