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ID:52362220
大小:4.21 MB
页数:11页
时间:2020-03-26
《气象卫星遥感火情监测应用.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、上海航天62AEROSPACESHANGHAI第34卷2017年第4期文章编号;1006—1630(2017)04—0062—11O气象卫星遥感火情监测应用李亚君,郑伟,陈洁,刘诚(中国气象局国家卫星气象中心,北京100081)摘要:对气象卫星遥感火情监测应用进行了研究。介绍了用中红外和远红外通道火点像元亮温与背景差异对火情进行监测的原理,以及可用于监测的主要卫星仪器。给出了极轨气象卫星和静止气象卫星的火点判别方法,包括亚像元火点面积与温度、燃烧辐射功(FRP)的火点强度估算方法,以及过火区面积估算和影响评估方法
2、。气象卫星火点监测精度用人工火场卫星同步观测和用高分辨率陆地卫星对火点监测两种方法进行验证。介绍了风云三号(FY一3)等气象卫星在防灾减灾、生态环境保护、气候影响评估等中的应用,包括森林草原火情监测和过火区估算、森林草原火险预警预报、秸秆焚烧火点监测及过火区面积估算、生物量燃烧引起的烟霾天气监测、干旱等气候事件对森林火灾的影响、全球野火监测等。展望了未来气象卫星在火情监测中的技术发展和应用。关键词:气象卫星;火情监测;火点判识;强度估算;过火评估;森林草原中图分类号:TP79;P407文献标志码:ADOI:10.
3、19328/j.cnki.1006—1630.2017.04.008FireMonitoringandApplicationBasedonMeteorologicalSatelliteLIYa—jun,ZHENGWei,CHENJie,LIUCheng(NationalSatelliteMeteorologicalCenter,ChinaMeteorologicalAdministration,Beijing100081,China)Abstract:Thefiremonitoringandapplication
4、basedonmeteorologicalsatellitewerestudiedinthispaper.Thefiremonitoringprinciplethroughthebrightnesstemperaturedifferentbetweenfirepixelandbackgroundinmiddleinfraredandfarinfraredchannelswasintroduced.Themajorinstrumentsonborneweregiven.Thediscriminationmethod
5、soffirepointforpolarorbitmeteorolo百calsatelliteandgeostationaryorbitmeteorologicalsatellite,firepointintensityestimationincludingtheareaandtemperatureofsub—pixelfirepoint,andfiringradiationpower,andthemethodsofburnedareaestimationandeffectassessmentwerepresen
6、ted.Thefiremonitoringaccuracybasedonmeteorologicalsatellitewerevalidatedbytwowayswhichwereartificialfirefieldobservedsynchronouslybysatelliteandfiremonitoringbylandsatellitewithhighresolution.TheapplicationsofFY-3andothersmeteorologicalsatellitesindisasterpre
7、ventionandreduction,ecologicalenvironmentprotectionandclimaticeffectassessmentwereintroduced,whichincludingforestandprairiefiremonitoring,burnedreignestimation,warningandforecastofforestandprairiefire,monitoringoffirecausedbystrawburningandburnedareaestimatio
8、n,hazeweathermonitoringcausedbybiomassburning,climaticeventeffectofdroughtandothersonforestfire,andglobalwildfiremonitoring.Thetechnologydevelopmentandapplicationofmeteorologicalsatellite
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