提高能源效率 实现低碳经济

低碳经济是以低能耗、低污染、低排放为基础的经济模式,是人类社会继农业文明、工业文明之后的又一次重大进步。低碳经济实质是能源高效利用、清洁能源开发、追求绿色GDP的     

兰江流域近43年气候变化及对水资源的影响

利用累积距平法对兰江流域近43年（1961-2003年）气温、降水量和径流量资料进行分析,研究兰江流域气候变化及其气候变化对水资源的影响。结果显示：兰江流域近43年来气温、降水量总的趋势是上升的;1990年代是兰江流域气温上升和降水增加最显著的时段,主要表现在冬春气温明显上升,夏季降水量明显增加：兰江流域年径流深与年降水量基本保持同步变化。兰江流域过去43年的气候变化对流域内水资源产生了较大的影响,而且由于兰江流域内水资源空间分布差异较大,致使流域内人均水资源占有量较少的金华地区易受气候变化影响而出现供水紧张。     

SPATIAL AND TEMPORAL DISTRIBUTION OF MESOSCALE CONVECTIVE VORTICES IN EAST CHINA AND THE WESTERN PACIFIC REGION

Data from high-resolution satellites were used to evaluate the spatial and temporal distribution of mesoscale convective vortices (MCVs) in central and east China and the western Pacific Ocean region. The monthly variation in MCVs was significant. From May to October, MCVs were clearly affected by large-scale environmental conditions, including the South Asian summer monsoon, subtropical high and solar radiation, which resulted in clear changes in MCV spatial distributions from strengthening and weakening processes. Based on the analysis of diurnal MCV variations and the precipitation rate from May to October, MCVs were found to occur more frequently over the ocean than over land. MCVs near the Sea of Japan and northern South China Sea occurred during all types of weather. Ocean occurrences near land, such as the Ryukyu Islands, were categorized as morning-active MCVs. The hilly regions of southeastern China and North China Plain were characterized by afternoon-active MCVs. Limited to topography and the urban heat island effect, the Beijing-Tianjin-Tangshan area had evening-active MCVs, while Changbai Mountain had nocturnal MCVs.     

中国南方地区冻雨落区分析及推算

基于改进的层结分析法,对2008-2019年我国出现的5次严重冻雨过程的冻雨落区及冻雨出现的海拔高度进行了推算,并利用全国地面2000多个地面测站的雨凇观测数据及电网覆冰灾情资料进行了验证.改进算法后推算的冻雨落区不仅涵盖了地面观测的雨凇分布区域,还涵盖了无雨凇观测但出现严重冻雨灾情的山区,且推算的冻雨出现海拔高度与实...