caa a22 4500 469084677 CHVBK 20180323133001.0 cr unu---uuuuu 170328e19920601xx s 000 0 eng 10.1007/BF02657511 doi (NATIONALLICENCE)springer-10.1007/BF02657511 Transport of water vapor over North China during the drought period in summer of 1980 [Elektronische Daten] [Liu Yongqiang, Ding Yihui, Li Yuehong] The features of water vapor transport, such as temporal evolution, vertical structure and spatial pattern, over North China during the prolonged drought in the summer of 1980 have been analyzed through computation of water vapor flux based on the once daily ECMWF grid-point data at 12GMT. The results indicate that it is unlikely that the characteristics of the atmospheric mass divergence, ascending motion and stratification stability in North China were completely opposite to those in the Yangtze River Valley, where the heavy flood occurred in the summer of 1980. It is major differences that the strong ascending motion and significant water vapor convergence overlap fairly well each other in the vertical levels in the Yangtze River Valley, while the maximum ascending motion is accompanied by water vapor divergence or weak water vapor convergence in North China. This vertical structure in North China results in insufficient water vapor supply and, therefore, little condensation and precipitation in the middle and upper atmosphere were produced. Additionally, a mode of monthly-scale low frequency oscillation can be found in water vapor flux, which is in correspondence to the fluctuation period of rainfall. Advances in Atmospheric Sciences, 1992 Yongqiang Liu Academy of Meteorological Science, State Meteorological Administration, 100081, Beijing aut Yihui Ding Academy of Meteorological Science, State Meteorological Administration, 100081, Beijing aut Yuehong Li Academy of Meteorological Science, State Meteorological Administration, 100081, Beijing aut Advances in Atmospheric Sciences Science Press 9/2(1992-06-01), 213-222 0256-1530 9:2<213 1992 9 376 https://doi.org/10.1007/BF02657511 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02657511 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Yongqiang Liu Academy of Meteorological Science, State Meteorological Administration, 100081, Beijing aut NATIONALLICENCE 700 1- Yihui Ding Academy of Meteorological Science, State Meteorological Administration, 100081, Beijing aut NATIONALLICENCE 700 1- Yuehong Li Academy of Meteorological Science, State Meteorological Administration, 100081, Beijing aut NATIONALLICENCE 773 0- Advances in Atmospheric Sciences Science Press 9/2(1992-06-01), 213-222 0256-1530 9:2<213 1992 9 376 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer