. Compendium of meteorology. Meteorology. _L â 90° -80° -70° -60° -50° -40° -30° TEMPERATURE (°C) -20° -10° 400 500 w 5 600 oa d 700 800 900 1000 -I 1 i 1 1 1 r â â¢\^ OCTOBER7\\\ OCTOBER 8 OIOOE leOOESTJif. \(|N THE EYE) OCTOBER 7\\ . 0400 EST i\ _l_ J- _L _L -40° -30° -20° -10° 0* 10° 20° TEMPERATURE {°C) 30° 40° 50° Fig. 4.âSoundings at Tampa, Florida, during the approach and arrival of a hurricane center, October 7-8, 1946. dinary stability in the middle troposphere. Figure 5 shows probable tropopause variation in three tropical cyclones, and in Fig. 6 Simpson indi
. Compendium of meteorology. Meteorology. _L â 90° -80° -70° -60° -50° -40° -30° TEMPERATURE (°C) -20° -10° 400 500 w 5 600 oa d 700 800 900 1000 -I 1 i 1 1 1 r â â¢\^ OCTOBER7\\\ OCTOBER 8 OIOOE leOOESTJif. \(|N THE EYE) OCTOBER 7\\ . 0400 EST i\ _l_ J- _L _L -40° -30° -20° -10° 0* 10° 20° TEMPERATURE {°C) 30° 40° 50° Fig. 4.âSoundings at Tampa, Florida, during the approach and arrival of a hurricane center, October 7-8, 1946. dinary stability in the middle troposphere. Figure 5 shows probable tropopause variation in three tropical cyclones, and in Fig. 6 Simpson indicates the probable relation between temperature in the outer and inner vortex of a mature hurricane. ORIGIN OF TROPICAL CYCLONES Theories of Tropical Cyclone Development. The con- vective theory of the formation of tropical cyclones was developed many years ago and was generally ac- cepted until the early 1930's. It was believed that the following series of events occurred in the equatorial trough: The warm moist surface air rose because of both insolation and widespread convergence, resulting in numerous cumulonimbus clouds and widespread heavy showers. Then the pressure began falling slowly (for reasons never very well explained), the cumulo- nimbus clouds gradually coalesced, and if the equa- torial trough was sufficiently far from the equator for the Coriolis force to be effective, a cyclonic circulation was initiated. The development of the circulation con- tinued until full intensity was obtained by release of latent heat through condensation. In some areas, no- tably the North Atlantic, it is now apparent that many, if not the majority, of the tropical cyclones do not develop in the equatorial trough. LAKE CHARLES SEPTEMBER 1941. Fig. 5.âSoundings at selected stations during the near- approach or arrival of a hurricane center. (®âheight of tropopause; Hâtop of sounding, tropopause not reached.) (Hurricane NotesâWeather
Size: 1431px × 1746px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookcollectionbiodivers, booksubjectmeteorology
