Energy flux and convergence patterns in the lower and middle stratosphere during the IQSY
Abstract The vertical and horizontal fluxes of energy by large‐scale standing waves have been estimated on a monthly basis for the IQSY for the 100–10 mb region. A large upward flux into the region occurs in winter some of which passes into the atmosphere above 10 mb, where it may exceed the energy...
| Published in: | Quarterly Journal of the Royal Meteorological Society |
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| Main Authors: | , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Wiley
1969
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| Subjects: | |
| Online Access: | http://dx.doi.org/10.1002/qj.49709540406 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fqj.49709540406 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/qj.49709540406 |
| Summary: | Abstract The vertical and horizontal fluxes of energy by large‐scale standing waves have been estimated on a monthly basis for the IQSY for the 100–10 mb region. A large upward flux into the region occurs in winter some of which passes into the atmosphere above 10 mb, where it may exceed the energy generated there by radiative processes. The meridional wave energy flux diverges from the 40°–60°N region and converges in both high and low latitudes in winter. The total energy flux convergence pattern shows that the polar night jet in the lower stratosphere in winter is a source of kinetic energy; when the jet collapses in the spring the same region turns into a strong sink and it is noted that while this was a gradual process in 1965 and occupied three months, there was a large absorption in March 1964 that dominated the energetics pattern in spring. The largest energy absorption occurs with the largest energy flux into the region, thus supporting previous suggestions that the spring warming is ultimately dependent on tropospheric events. The adiabatic approximation was used in the flux computations and the role of radiative processes in the observed events is briefly discussed. |
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