Beijing has issued its first pollution red alert as acrid2smog enveloped3the Chinese capital for the second time this month.The alert will begin at 7 am on Tues
The El Nin o-Southern Oscillation (ENSO) is modulated by many factors; most previous studies have emphasized the roles of wind stress and heat flux in the tropi
Based on an analysis of δ18O and δ13C,the planktonic foraminiferal assemblage,and sedimentary grain size,and the study of multiproxy data such as paleothermoc