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A Climatology of Precipitating Open-Cell Convection over the Northeast Gulf of Alaska.
- Source :
-
Journal of Applied Meteorology & Climatology . Dec2014, Vol. 53 Issue 12, p2843-2847. 5p. 1 Chart, 2 Graphs, 1 Map. - Publication Year :
- 2014
-
Abstract
- This brief paper addresses the frequency of precipitating open-cell convection over the northeastern Gulf of Alaska during a 5-yr period (2002-06). The research employs 154 previously documented satellite synthetic aperture radar-derived wind speed (SDWS) images that contain open-cell convection signatures. Each SDWS image is paired with a near-in-time, National Weather Service Weather Surveillance Radar-1988 Doppler Level-III 0.5°-elevation-angle short-range base reflectivity image from coastal Alaska for which coverage spatially overlaps open-cell convection signatures. The time difference between any two images of a single pair is typically a few minutes or less. For 65% of the image pairs, at least one SDWS open-cell convection signature in the overlap region is associated with precipitation. That percentage may be conservative given the method used in this research. Thus, the results of this research support a suggestion that has been posed in previous studies that the organization of open-cell convection can be controlled by the interaction of the environmental vertical wind shear and precipitation-driven cold pools. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 15588424
- Volume :
- 53
- Issue :
- 12
- Database :
- Academic Search Index
- Journal :
- Journal of Applied Meteorology & Climatology
- Publication Type :
- Academic Journal
- Accession number :
- 99906490
- Full Text :
- https://doi.org/10.1175/JAMC-D-14-0205.1