1. School of Plant Protection, Joint International Research Laboratory of Agriculture and Agri-Product Safety of the Ministry of Education, Yangzhou University, Yangzhou 225009, China
2. Institute of Desert Meteorology, China Meteorological Administration, Urumqi 830002, China
3. Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China
4. Finnish Meteorological Institute, P.O. Box 503, 00101 Helsinki, Finland