TY - GEN
T1 - A study on the trajectories of mesoscale convective systems and their environmental physical field values using GMS image
AU - Dai, Xiaoyan
AU - Guo, Zhongyang
AU - Xu, Jianhua
PY - 2006
Y1 - 2006
N2 - The forecasting of disaster weather, especially intensive convective weather, is becoming increasingly important. Recent evidence has indicated that the intensive precipitation in the Changjiang River Basin and the south-west region of China is closely related to the activity of Mesoscale Convective Systems (MCS), which move out of the Tibetan Plateau in China. To date, however, the mechanism of MCS and their structure are not yet clear, due to restrictions on time and space scales in traditional observation data, especially in the Tibetan Plateau. To reveal MCS features and trajectories, in this paper, MCS are automatically tracked over the Tibetan Plateau using Geostationary Meteorological Satellite (GMS) infrared blackbody temperature (Tbb) data from June to August 1998. Based on these, spatial clustering analysis is applied to study the relationships between the trajectories of MCS over the Tibetan Plateau and their environmental physical field values. And, the spatial distribution features of environmental physical field of influencing MCS move out of the Plateau are obtained. Consequently, these prove new methods to discover the regulations of MCS trajectories and the causes of MCS origination and development. Meanwhile, the results show that it is of great value in improving the precision of heavy rainfall and intensive convective weather forecasting in the Changjiang River Basin and the south-west region of China.
AB - The forecasting of disaster weather, especially intensive convective weather, is becoming increasingly important. Recent evidence has indicated that the intensive precipitation in the Changjiang River Basin and the south-west region of China is closely related to the activity of Mesoscale Convective Systems (MCS), which move out of the Tibetan Plateau in China. To date, however, the mechanism of MCS and their structure are not yet clear, due to restrictions on time and space scales in traditional observation data, especially in the Tibetan Plateau. To reveal MCS features and trajectories, in this paper, MCS are automatically tracked over the Tibetan Plateau using Geostationary Meteorological Satellite (GMS) infrared blackbody temperature (Tbb) data from June to August 1998. Based on these, spatial clustering analysis is applied to study the relationships between the trajectories of MCS over the Tibetan Plateau and their environmental physical field values. And, the spatial distribution features of environmental physical field of influencing MCS move out of the Plateau are obtained. Consequently, these prove new methods to discover the regulations of MCS trajectories and the causes of MCS origination and development. Meanwhile, the results show that it is of great value in improving the precision of heavy rainfall and intensive convective weather forecasting in the Changjiang River Basin and the south-west region of China.
KW - Black-body temperature
KW - Environmental physical field values
KW - Mesoscale convective system
KW - Spatial clustering analysis
KW - Tibetan plateau
UR - https://www.scopus.com/pages/publications/34948839351
U2 - 10.1109/IGARSS.2006.148
DO - 10.1109/IGARSS.2006.148
M3 - 会议稿件
AN - SCOPUS:34948839351
SN - 0780395107
SN - 9780780395107
T3 - International Geoscience and Remote Sensing Symposium (IGARSS)
SP - 565
EP - 568
BT - 2006 IEEE International Geoscience and Remote Sensing Symposium, IGARSS
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2006 IEEE International Geoscience and Remote Sensing Symposium, IGARSS
Y2 - 31 July 2006 through 4 August 2006
ER -