Every day should be spent showing Mom how much you appreciate her.However,for any days you might have missed,you can make it up to her with the perfect Mother’s Day gift.Whether she’s a new mother,step- mother,grand...Every day should be spent showing Mom how much you appreciate her.However,for any days you might have missed,you can make it up to her with the perfect Mother’s Day gift.Whether she’s a new mother,step- mother,grandmother or like a mother she’s sure to love our top picks.Happy Mother’s Day Mom!展开更多
Meteorological conditions associated with intense rainfall and great floods over mid- and lower reaches of Yangtze River are studied by analyzing the large-, synoptic-and meso-a-scale circulation systems for 1991, 199...Meteorological conditions associated with intense rainfall and great floods over mid- and lower reaches of Yangtze River are studied by analyzing the large-, synoptic-and meso-a-scale circulation systems for 1991, 1996 and 1998. It is found that the advance and retreat of subtropical high over the West Pacific, the monsoon moisture surge from the South China Sea, cold air outbreak over mid- and high-latitudes, and the meso-α scale systems (250-2500 km) from the Tibetan Pleateau as well, are responsible for intense rainfall over the Yangtze River Valley. The persistent and heavy rains and great floods over the Yangtze River Valley occurred when all these four systems are synergetic or in phase lock.展开更多
文摘Every day should be spent showing Mom how much you appreciate her.However,for any days you might have missed,you can make it up to her with the perfect Mother’s Day gift.Whether she’s a new mother,step- mother,grandmother or like a mother she’s sure to love our top picks.Happy Mother’s Day Mom!
基金This work was supported by the National Key Basic Research Development Program (Grant Nos. G1998040908 (part 1) G1998040900 (part 2)) the Key Project of Chinese Academy of Sciences (Grant No. KZCX2-203).
文摘Meteorological conditions associated with intense rainfall and great floods over mid- and lower reaches of Yangtze River are studied by analyzing the large-, synoptic-and meso-a-scale circulation systems for 1991, 1996 and 1998. It is found that the advance and retreat of subtropical high over the West Pacific, the monsoon moisture surge from the South China Sea, cold air outbreak over mid- and high-latitudes, and the meso-α scale systems (250-2500 km) from the Tibetan Pleateau as well, are responsible for intense rainfall over the Yangtze River Valley. The persistent and heavy rains and great floods over the Yangtze River Valley occurred when all these four systems are synergetic or in phase lock.
