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學(xué)習(xí)快評丨qibao666888　　今??(jin)年??(nian)北??(bei)京??(jing)入??(ru)春??(chun)較??(jiao)常??(chang)年??(nian)偏??(pian)早??(zao)?，主??(zhu)要??(yao)原??(yuan)因??(yin)是??(shi)2月??(yue)下??(xia)旬??(xun)以??(yi)來??(lai)?，華??(hua)北??(bei)地?(di)區(qū)??(qu)冷??(leng)空??(kong)氣??(qi)勢??(shi)力??(li)較??(jiao)弱??(ruo)?，降?(jiang)水??(shui)偏?(pian)少??(shao)?，使?(shi)得??(de)氣??(qi)溫?(wen)回??(hui)升??(sheng)明??(ming)顯??(xian)?，導(dǎo)??(dao)致??(zhi)入??(ru)春??(chun)時??(shi)間??(jian)提??(ti)前??(qian)??。??　　根??(gen)據(jù)??(ju)《氣??(qi)候??(hou)季??(ji)節(jié)??(jie)劃??(hua)分??(fen)》國??(guo)家?(jia)標(biāo)??(biao)準(zhǔn)??(zhun)：當(dāng)??(dang)年??(nian)5天??(tian)滑?(hua)動??(dong)平??(ping)均??(jun)氣??(qi)溫??(wen)序??(xu)列?(lie)中??(zhong)??，首??(shou)次??(ci)連??(lian)續(xù)??(xu)5個??(ge)滿??(man)足??(zu)≥10℃的??(de)滑??(hua)動?(dong)平??(ping)均??(jun)值??(zhi)所?(suo)對??(dui)應(yīng)??(ying)的??(de)日?(ri)平??(ping)均??(jun)氣??(qi)溫??(wen)序??(xu)列??(lie)(9天??(tian))中?(zhong)??，第??(di)一??(yi)個??(ge)≥10℃的??(de)日??(ri)期??(qi)作??(zuo)為??(wei)春?(chun)季??(ji)起??(qi)始??(shi)日??(ri)??。?結(jié)?(jie)合??(he)前?(qian)期?(qi)實(shí)??(shi)況??(kuang)??，北??(bei)京??(jing)自??(zi)3月??(yue)21日??(ri)起??(qi)滑??(hua)動??(dong)平??(ping)均??(jun)氣??(qi)溫??(wen)序??(xu)列??(lie)開?(kai)始??(shi)≥10℃??，并??(bing)于??(yu)3月??(yue)25日??(ri)達(dá)??(da)到??(dao)連??(lian)續(xù)??(xu)5天??(tian)≥10℃??，其??(qi)所??(suo)對??(dui)應(yīng)??(ying)的??(de)氣??(qi)溫?(wen)序??(xu)列??(lie)中??(zhong)第??(di)一??(yi)個??(ge)≥10℃的??(de)日??(ri)期??(qi)為??(wei)3月??(yue)19日??(ri)(11.6℃)??，因??(yin)此??(ci)判??(pan)定??(ding)2025年??(nian)北??(bei)京??(jing)入??(ru)春??(chun)日?(ri)期??(qi)為??(wei)3月?(yue)19日??(ri)??。。