Progress of near-surface PM<sub>2.5</sub> concentration retrieve based on satellite remote sensing

نویسندگان

چکیده

细颗粒物PM2.5(Fine Particulate Matterï¼‰æ˜¯å½±å“ç©ºæ°”è´¨é‡å’Œå ¬å ±å¥åº·çš„å ³é”®å› ç´ ä¹‹ä¸€ã€‚é«˜æ—¶ç©ºåˆ†è¾¨çŽ‡çš„PM2.5æ•°æ®æ˜¯å ±å¥åº·é£Žé™©è¯„ä¼°å’Œæµè¡Œç— å­¦ç ”ç©¶çš„åŸºæœ¬éœ€æ±‚ã€‚ç›¸è¾ƒäºŽåœ°é¢ç«™ç‚¹ï¼Œå«æ˜Ÿé¥æ„ŸæŠ€æœ¯å ·æœ‰è¿žç»­è§‚æµ‹ã€å®½è¦†ç›–å’Œä½Žæˆæœ¬çš„ä¼˜åŠ¿ï¼ŒåŸºäºŽå«æ˜Ÿæ°”æº¶èƒ¶å ‰å­¦åŽšåº¦AOD(Aerosol Optical Depth)反演PM2.5è´¨é‡æµ“åº¦çš„æ–¹æ³•å·²æˆä¸ºçƒ­ç‚¹ã€‚æœ¬ç ”ç©¶æ¦‚è¿°äº†å«æ˜ŸAOD产品反演PM2.5浓度的原理,介绍了用于PM2.5反演的主要卫星AODäº§å“åŠå ¶åæ¼”ç²¾åº¦ï¼›æ€»ç»“äº†çŽ°æœ‰çš„PM2.5ä¼°ç®—æ–¹æ³•åŠå ¶ä¼˜ç¼ºç‚¹ï¼ŒæŒ‡å‡ºç›®å‰PM2.5åæ¼”ç ”ç©¶å­˜åœ¨çš„é—®é¢˜ï¼›æå‡ºæœªæ¥PM2.5反演方向主要集中在高时空分辨率的PM2.5æµ“åº¦é‡å»ºã€åŸºäºŽæ¿€å ‰é›·è¾¾æ•°æ®çš„ä¸‰ç»´PM2.5浓度反演及PM2.5åŒ–å­¦ç»„åˆ†åæ¼”ç­‰æ–¹å‘ã€‚æ¯”ä¾‹å› å­æ³•ã€ç‰©ç†æœºç†æ¨¡åž‹å’Œç»Ÿè®¡æ¨¡åž‹è¿™3种方法都能在不同时期不同程度地准确估算PM2.5æµ“åº¦ï¼Œä»£è¡¨äº†é‚£ä¸ªæ—¶æœŸè¾ƒä¸ºå‰æ²¿çš„ç ”ç©¶çƒ­ç‚¹ï¼Œä½†æ¯”ä¾‹å› å­æ³•å’Œç‰©ç†æœºç†æ¨¡åž‹å› å ¶è‡ªèº«çš„å±€é™æ€§è€Œåº”ç”¨è¾ƒå°‘ï¼Œè€Œç»Ÿè®¡æ¨¡åž‹å› ¶ç‹¬ç‰¹çš„æ—¶é—´æˆ–时空异质性的可描述性和强大的非线性描述能力的优势而被广泛应用并不断改进。目前PM2.5åæ¼”ç ”ç©¶å­˜åœ¨çš„é—®é¢˜ä¸»è¦æœ‰3种:(1)卫星AODçš„éžéšæœºç¼ºå¤±é—®é¢˜é€ æˆä¼°ç®—çš„PM2.5数据缺失;(2)反演模型的精度问题;(3)PM2.5的化学成分估算问题。基于此,本文为了准确揭示近地面PM2.5的时空变化趋势,提高基于卫星AOD产品的近地面PM2.5åæ¼”ç ”ç©¶çš„å‡†ç¡®æ€§ï¼Œæå‡ºäº†å‡ ç‚¹æœªæ¥çš„ç ”ç©¶æ–¹å‘ï¼šé¦–å ˆï¼Œæ–°åž‹çš„é«˜ç©ºé—´ï¼ˆå¦‚é£Žäº‘å››å·ã€é«˜åˆ†äº”å·ï¼‰ã€é«˜æ—¶é—´åˆ†è¾¨çŽ‡ï¼ˆHimawari-8/9)卫星AOD产品在PM2.5çš„ç²¾ç»†åŒ–ä¼°ç®—ç ”ç©¶ä¸Šå ·æœ‰å¾ˆå¤§ä¼˜åŠ¿ï¼Œè¿™å¯¹äºŽé«˜æ—¶ç©ºåˆ†è¾¨çŽ‡çš„PM2.5æµ“åº¦é‡å»ºå ·æœ‰é‡è¦æ„ä¹‰ï¼›å ¶æ¬¡ï¼Œéšç€å¤§æ°”æŽ¢æµ‹æŠ€æœ¯çš„å‘å±•ï¼Œæ˜Ÿè½½ã€æœºè½½åŠåœ°åŸºæ¿€å ‰é›·è¾¾éƒ½èƒ½å¤ŸèŽ·å–åž‚ç›´åˆ†å¸ƒä¿¡æ¯ï¼Œæ­è½½åœ¨æ— äººæœºä¸Šçš„é¢—ç²’ç‰©ä¼ æ„Ÿå™¨å¯å®žçŽ°PM2.5åž‚ç›´æ–¹å‘ä¸Šçš„ç›‘æµ‹ï¼Œå°†å ¶ä¸Žå ‰å­¦é¥æ„Ÿå«æ˜Ÿæ•°æ®åŠåœ°é¢ç›‘æµ‹æ•°æ®ç»“åˆï¼Œå¯å®žçŽ°ä¸‰ç»´çš„PM2.5浓度反演;最后,PM2.5åŒ–å­¦ç»„åˆ†ä¿¡æ¯å¯¹äºŽåˆ†æžæ±¡æŸ“æˆå› ã€æš´éœ²ç‰¹å¾ç­‰å°¤å ¶é‡è¦ï¼Œå ¶æ—¶ç©ºå˜åŒ–è¶‹åŠ¿ç ”ç©¶æ˜¯ä¸€ä¸ªé‡è¦çš„å‘å±•æ–¹å‘ï¼Œç„¶è€Œï¼Œåœ°é¢PM2.5ç»„åˆ†è§‚æµ‹ç«™ç½‘ä»ä¸å®Œå–„ï¼Œå¦‚ä½•å ‹æœå«æ˜Ÿé¥æ„Ÿä¼°ç®—ä¸­å¯¹åœ°é¢ç«™ç½‘çš„ä¾èµ–ï¼Œå®žçŽ°PM2.5åŒ–å­¦æˆåˆ†çš„é«˜ç²¾åº¦åæ¼”éœ€è¦è¿›ä¸€æ­¥ç ”ç©¶ã€‚é€šè¿‡æœ¬ç ”ç©¶ï¼Œæœ‰åŠ©äºŽè¿›ä¸€æ­¥äº†è§£ä¸åŒPM2.5ä¼°ç®—æ–¹æ³•çš„åŽŸç†æœºåˆ¶åŠå ¶ä¼˜ç¼ºç‚¹ï¼Œä¸ºåŸºäºŽå«æ˜ŸAOD产品反演近地面PM2.5浓度的新的发展方向提供启示,提升近地面PM2.5浓度反演的精度及时空分辨率。

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ژورنال

عنوان ژورنال: Journal of remote sensing

سال: 2022

ISSN: ['1007-4619', '2095-9494']

DOI: https://doi.org/10.11834/jrs.20210438