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111.
Using the monthly mean and minimum temperature data of the 36 observation stations in Guang-dong, the climatological features of the temperatures have been analyzed, including characteristics of trends, abrupt changes and periods. And the possible affecting factors on the winter warming in Guangdong have been discussed. The results show that the winter temperatures, particularly the monthly mean minimum temperatures in Guangdong, have a warming trend. The rise of the winter minimum temperatures in Guangdong began in the second half of 1960's and the warming was more evident since the 1980's. 相似文献
112.
The annual mean volume and heat transport sketches through the inter-basin passages and transoceanic sections have been constructed based on 1 400-year spin up results of the MOM4p1. The spin up starts from a state of rest, driven by the monthly climatological mean force from the NOAA World Ocean Atlas(1994). The volume transport sketch reveals the northward transport throughout the Pacific and southward transport at all latitudes in the Atlantic. The annual mean strength of the Pacific-Arctic-Atlantic through flow is 0.63×106 m3/s in the Bering Strait. The majority of the northward volume transport in the southern Pacific turns into the Indonesian through flow(ITF) and joins the Indian Ocean equatorial current, which subsequently flows out southward from the Mozambique Channel, with its majority superimposed on the Antarctic Circumpolar Current(ACC). This anti-cyclonic circulation around Australia has a strength of 11×106 m3/s according to the model-produced result. The atmospheric fresh water transport, known as P-E+R(precipitation minus evaporation plus runoff), constructs a complement to the horizontal volume transport of the ocean. The annual mean heat transport sketch exhibits a northward heat transport in the Atlantic and poleward heat transport in the global ocean. The surface heat flux acts as a complement to the horizontal heat transport of the ocean. The climatological volume transports describe the most important features through the inter-basin passages and in the associated basins, including: the positive P-E+R in the Arctic substantially strengthening the East Greenland Current in summer; semiannual variability of the volume transport in the Drake Passage and the southern Atlantic-Indian Ocean passage; and annual transport variability of the ITF intensifying in the boreal summer. The climatological heat transports show heat storage in July and heat deficit in January in the Arctic; heat storage in January and heat deficit in July in the Antarctic circumpolar current regime(ACCR); and intensified heat transport of the ITF in July. The volume transport of the ITF is synchronous with the volume transport through the southern Indo-Pacific sections, but the year-long southward heat transport of the ITF is out of phase with the heat transport through the equatorial Pacific, which is northward before May and southward after May. This clarifies the majority of the ITF originating from the southern Pacific Ocean. 相似文献
113.
REANALYSIS OF CLIMATOLOGICAL FEATURES OF TROPICAL CYCLONE OVER WEST PACIFIC FOR LATEST 50 YEARS(1949~1996) 总被引:1,自引:1,他引:0
A statistic analysis has been conducted of the climatological features of Northwest Pacific typhoons over the past 50 years based on historical record from 1949 to 1996. The objects of study include theannual variation, distribution by season and intensity, and category of motion. Additional investigation is made ofhow the typhoon varies in terms of the geographic location of generation and the relationship between the intensity and the source area. It is revealed that most of the strong typhoons originate over waters east of 125°E with the strongest group coming from the Mariana Is. Besides, distribution of landing typhoons is given with respect toseason and latitude. Statistics of central pressure at the point of landfall suggests that typhoons making landfallson the provinces of Zhejiang and Fujian are less frequent than in south China but have relatively high intensity. 相似文献
114.