Numerical experiments in climate stability.
Two semiempirical climate models are formulated as time-dependent problems in order to study the stability of their asymptotic steady state equilibrium solutions to perturbations in internal (in this case, initial) conditions. For fixed external conditions the time-dependent versions of these models...
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ftnasantrs:oai:casi.ntrs.nasa.gov:19730057738 2023-05-15T16:38:15+02:00 Numerical experiments in climate stability. Schneider, S. H. Gal-Chen, T. Unclassified, Unlimited, Publicly available Sep 20, 1973 http://ntrs.nasa.gov/search.jsp?R=19730057738 unknown http://ntrs.nasa.gov/search.jsp?R=19730057738 Accession ID: 73A42540 Copyright Other Sources 20 Journal of Geophysical Research; 78; Sept. 20 1973 ftnasantrs 2012-02-15T11:30:14Z Two semiempirical climate models are formulated as time-dependent problems in order to study the stability of their asymptotic steady state equilibrium solutions to perturbations in internal (in this case, initial) conditions. For fixed external conditions the time-dependent versions of these models exhibit fully transitive behavior to positive perturbations in initial conditions, slight intransivity to negative perturbations up to -18 K, and an ice-covered earth regime is obtained for extremely large negative perturbations in initial temperatures (below -18 K). The parametrization found to be most critical in these models is the albedo-temperature coupling, especially in tropical regions. The temperature albedo parametrization from an intransitive climate model used in a time-dependent form of one of the preceding models is found to be highly sensitive to negative perturbations in both internal and external conditions. Numerical experimentation with these semiempirical models shows the important role of the tropics in maintaining the equilibrium climate and suggests that the radiation balance in equatorial latitudes might have a controlling influence on the equatorward extent of the polar ice cap. Other/Unknown Material Ice cap Polar Ice Cap NASA Technical Reports Server (NTRS) |
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NASA Technical Reports Server (NTRS) |
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20 Schneider, S. H. Gal-Chen, T. Numerical experiments in climate stability. |
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description |
Two semiempirical climate models are formulated as time-dependent problems in order to study the stability of their asymptotic steady state equilibrium solutions to perturbations in internal (in this case, initial) conditions. For fixed external conditions the time-dependent versions of these models exhibit fully transitive behavior to positive perturbations in initial conditions, slight intransivity to negative perturbations up to -18 K, and an ice-covered earth regime is obtained for extremely large negative perturbations in initial temperatures (below -18 K). The parametrization found to be most critical in these models is the albedo-temperature coupling, especially in tropical regions. The temperature albedo parametrization from an intransitive climate model used in a time-dependent form of one of the preceding models is found to be highly sensitive to negative perturbations in both internal and external conditions. Numerical experimentation with these semiempirical models shows the important role of the tropics in maintaining the equilibrium climate and suggests that the radiation balance in equatorial latitudes might have a controlling influence on the equatorward extent of the polar ice cap. |
format |
Other/Unknown Material |
author |
Schneider, S. H. Gal-Chen, T. |
author_facet |
Schneider, S. H. Gal-Chen, T. |
author_sort |
Schneider, S. H. |
title |
Numerical experiments in climate stability. |
title_short |
Numerical experiments in climate stability. |
title_full |
Numerical experiments in climate stability. |
title_fullStr |
Numerical experiments in climate stability. |
title_full_unstemmed |
Numerical experiments in climate stability. |
title_sort |
numerical experiments in climate stability. |
publishDate |
1973 |
url |
http://ntrs.nasa.gov/search.jsp?R=19730057738 |
op_coverage |
Unclassified, Unlimited, Publicly available |
genre |
Ice cap Polar Ice Cap |
genre_facet |
Ice cap Polar Ice Cap |
op_source |
Other Sources |
op_relation |
http://ntrs.nasa.gov/search.jsp?R=19730057738 Accession ID: 73A42540 |
op_rights |
Copyright |
_version_ |
1766028535140450304 |