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Details van artikel 258 van 268 gevonden artikelen
| Titel: |
Using satellite thermal infrared imagery to study boundary layer structure in an Antarctic katabatic wind region |
| Auteur: |
King, J. C. |
| Verschenen in: |
International journal of remote sensing |
| Paginering: | Jaargang 19 (1998) nr. 17 pagina's 3335-3348 |
| Jaar: |
1998-01 |
| Inhoud: |
We use snow surface temperatures obtained from thermal infrared (TIR) satellite imagery, together with radiosonde profiles of free-air temperature and high-resolution topographic data to study the thermal structure of the atmospheric boundary layer in a coastal region ofEast Antarctica. Surface temperatures over a coastal ice shelf are shown to be significantly lower than those observed on the lower part of the adjoining coastal slopes as a result of the strong surface temperature inversion that forms over the ice shelf. Between 400 and 1500 m elevation the surface temperature lapse rate is close to the dry adiabatic value while the free-air temperature profile is significantly stable over this height range. We argue that this implies that the strength of the surface inversion increases with increasing elevation. Above 1500 m the surface temperature lapse rate becomes significantly superadiabatic and the coldest surface temperatures are found a few 10s of kilometres inland of the highest topography. The technique may prove useful for studying boundary layer structure in other regions of Antarctica where suitable high-resolution topographic data are available. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 258 van 268 gevonden artikelen
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