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學(xué)習(xí)快評丨qibao666888　　國??(guo)家??(jia)大??(da)氣?(qi)污??(wu)染??(ran)防??(fang)治??(zhi)攻??(gong)關(guān)?(guan)聯(lián)??(lian)合??(he)中??(zhong)心??(xin)密??(mi)切??(qie)關(guān)??(guan)注??(zhu)?，分??(fen)析??(xi)此??(ci)次??(ci)沙??(sha)塵??(chen)天??(tian)氣??(qi)的?(de)影??(ying)響??(xiang)和??(he)發(fā)??(fa)展??(zhan)趨??(qu)勢??(shi)??。??22日??(ri)午??(wu)后??(hou)起??(qi)?，一??(yi)股?(gu)沙??(sha)塵??(chen)氣??(qi)團??(tuan)在??(zai)強??(qiang)西??(xi)北??(bei)風(fēng)??(feng)作??(zuo)用??(yong)下??(xia)逐??(zhu)步?(bu)向?(xiang)東??(dong)南??(nan)方??(fang)向??(xiang)推??(tui)移??(yi)??。受??(shou)其??(qi)影??(ying)響??(xiang)?，內(nèi)??(nei)蒙??(meng)古??(gu)中??(zhong)西??(xi)部??(bu)、寧??(ning)夏??(xia)北??(bei)部??(bu)、陜??(shan)西??(xi)北??(bei)部??(bu)、山??(shan)西??(xi)北??(bei)部??(bu)等??(deng)地??(di)PM10濃??(nong)度??(du)顯??(xian)著??(zhu)上??(shang)升??(sheng)??。截??(jie)至??(zhi)23日??(ri)10時??(shi)?，內(nèi)??(nei)蒙??(meng)古??(gu)巴??(ba)彥??(yan)淖??(nao)爾??(er)、烏??(wu)海??(hai)空?(kong)氣??(qi)質(zhì)??(zhi)量?(liang)達??(da)到??(dao)小??(xiao)時??(shi)嚴(yán)??(yan)重??(zhong)污??(wu)染??(ran)水??(shui)平??(ping)?，其??(qi)他??(ta)受??(shou)影??(ying)響??(xiang)城??(cheng)市??(shi)為??(wei)小??(xiao)時??(shi)輕??(qing)至??(zhi)重??(zhong)度??(du)污??(wu)染??(ran)水??(shui)平??(ping)；北??(bei)京??(jing)市??(shi)PM10濃??(nong)度??(du)從??(cong)23日?(ri)凌??(ling)晨?(chen)起??(qi)顯??(xian)著??(zhu)抬??(tai)升??(sheng)?，峰??(feng)值??(zhi)濃??(nong)度??(du)已??(yi)達??(da)到??(dao)小??(xiao)時??(shi)輕??(qing)度??(du)污??(wu)染?(ran)水??(shui)平??(ping)??。　　專??(zhuan)家??(jia)分??(fen)析??(xi)?，近??(jin)期??(qi)沙??(sha)塵??(chen)天??(tian)氣??(qi)比??(bi)較??(jiao)頻?(pin)繁??(fan)有??(you)兩??(liang)方??(fang)面?(mian)原??(yuan)因??(yin)??。??一?(yi)是??(shi)蒙??(meng)古??(gu)國??(guo)和??(he)中??(zhong)國??(guo)北??(bei)方??(fang)地??(di)區(qū)??(qu)氣??(qi)溫??(wen)偏??(pian)高?(gao)?，導(dǎo)??(dao)致??(zhi)地??(di)表?(biao)積??(ji)雪??(xue)覆??(fu)蓋??(gai)范??(fan)圍??(wei)縮??(suo)小??(xiao)、含??(han)水??(shui)率??(lv)下??(xia)降??(jiang)?，這??(zhe)是??(shi)有??(you)利??(li)于??(yu)沙??(sha)塵??(chen)發(fā)??(fa)生??(sheng)的??(de)熱??(re)力??(li)因??(yin)素??(su)??。二??(er)是??(shi)近??(jin)期??(qi)冷??(leng)空??(kong)氣??(qi)活?(huo)動??(dong)頻??(pin)繁??(fan)?，22日??(ri)北??(bei)方??(fang)地??(di)區(qū)??(qu)風(fēng)?(feng)力??(li)明??(ming)顯??(xian)增??(zeng)強??(qiang)?，內(nèi)??(nei)蒙??(meng)古??(gu)普??(pu)遍??(bian)達??(da)到??(dao)6級??(ji)及??(ji)以?(yi)上?(shang)?，局??(ju)地??(di)超??(chao)過??(guo)8級?(ji)?，這??(zhe)是??(shi)誘??(you)發(fā)?(fa)沙??(sha)源??(yuan)地??(di)起??(qi)沙??(sha)的??(de)動?(dong)力??(li)因??(yin)素??(su)??。。