A study of tropical tropopause using MST radar
Using the MST radar data of vertical wind, the characteristics of the tropical tropopause, following four different definitions, depending on 1) temperature lapse rate, 2) cold point, 3) convective outflow and 4) potential temperature lapse rate minimum, are studied. From the vertical wind data...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2005-10-01
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| Series: | Annales Geophysicae |
| Online Access: | https://www.ann-geophys.net/23/2441/2005/angeo-23-2441-2005.pdf |
| Summary: | Using the MST radar data of vertical wind, the characteristics of the
tropical tropopause, following four different definitions, depending on
1) temperature lapse rate, 2) cold point, 3) convective outflow and
4) potential temperature lapse rate minimum, are studied. From the
vertical wind data of the radar, the altitude profiles of temperature
and horizontal divergence are derived, from which the tropopause levels
corresponding to i) the lapse rate ii) cold point iii) convective
outflow level and iv) potential temperature lapse rate minimum are
determined. The convective outflow level and hence the convective
tropopause altitude is determined, for the first time using the MST radar data.
The tropopause altitudes and temperatures obtained
following the four definitions are compared on a day-to-day basis
for the summer and winter seasons. Winter and summer differences in the
tropopause altitude and temperature are also studied.<br><br>
<b>Keywords.</b> Meteorology and atmospheric dynamics (convective
process; middle atmosphere dynamics; tropical meteorology) |
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| ISSN: | 0992-7689 1432-0576 |