Based on MODIS/Terra Snow Cover Daily Data MOD10A1,the snow spatial-temporal information of Jilin province including snow cover duration（SCD）,snow cover onset dates（SCOD） and snow cover melting date（SCMD）,are extracted and the variation characteristics are also analyzed.Then,the relationship between snow cover and climate are analyzed.And the climate data covers the temperature and precipitation data of 23 base stations in recent 10 years.The result shows that snow cover duration spans from 30 to 90 days in most regions of Jilin;it is in the eastern area that snow cover lasts for a longer time,SCOD begins earlier and SCMD ends later.There is a negative relationship between SCD and temperature and a positive relationship between SCD and precipitation,with coefficients of-0.7407 and 0.6875 of temperature in snow season and precipitation in summer respectively;there is a negative relationship between SCMD and temperature and a positive relationship between SCMD and precipitation,with coefficients of-0.5414 and 0.4647;on the contrary,with coefficients of 0.7430 and 0.5479 respectively.In all,snow remote sensing information were more sensitive to temperature than to precipitation,as well as to snow season than to summer;The lower the temperature was and the more the precipitation was,the longer the duration of snow cover.Temperature is more essential for maintaining snow cover.
NETL
NSTL
维普
万方数据
