文章基本信息

标题：COMBINATION OF RAMAN LIDAR AND MICROWAVE RADIOMETER SENSED WATER VAPOUR DATA
本地全文：下载
作者：M. Schneebeli ; U. Wandinger ; I. Matthis 等
期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2007
卷号：XXXVI-7/C50
出版社：Copernicus Publications
摘要：The . international . LAUNCH . (International . Lindenberg . campaign . for . assessment . of . humidity . and . cloud . profiling.systems.and.its .impact. on .high-resolution. modelling).campaign.took.place.in .late .summer/early. fall . 2005..One.goal.of. the. campaign. was .the.improvement. of .remote. sensing . techniques .and.algorithms. for. the . advancement. of .meteorological . observations..Apart. from.the.main.measurement. site .in.Lindenberg,.several . outposts.in.and.outside.of.Germany.were.part.of.the.observational.network. At . the . Leibniz . Institute . for . Tropospheric . Research . in . Leipzig, . our . group . assembled . the . multi-channel . radiometer . system . ASMUWARA. (All . Sky . MUlti. WAvelength . RAdiometer) . (1). . This . instrument . is . equipped . with. nine .microwave. channels . from. 17 .to. 151 .GHz, .two. infrared. radiometers .measuring .in . the. atmospheric . window.and.a.sky.camera. During . the . campaign, . co-located . measurements . were . conducted .together. with . the . Temperature-Moisture- Aerosol.Raman.Lidar.(2). The.lidar.is.able.to.precisely.measure.the.water.vapour.mass.mixing.ratio.profile,.provided.that.no.clouds.are . present.. In .addition,.the. lidar's .height .range.is .reduced .during.the.day.because. of .sunlight. contamination .in . the.Raman.signal. The.microwave.radiometer.can.measure. water. vapour. density.profiles. and.temperature.profiles. in.almost. all . weather. conditions .and.during .the. whole. day.without .reduced. data.quality, .but . with. the. constraint.that.these . water.vapor.profiles.have.a.coarse.height.resolution.. We.can .now.combine.the .two.data. sets. in.order.to.fully.benefit. from.the.advantages.of.the.two.instruments. . We. will. show. the .performance. of .an .already .existing . algorithm .based. on. a. Kalman . filtering. technique . (3). . This . algorithm . includes . the . Integrated . Water . Vapour . (IWV) . as . the . only . contribution . from . the . microwave . radiometer. .As. a .novelty, .we . will.present .a . new. algorithm .based . on . an . optimal. estimation. technique. .This . new . algorithm . includes . all. channels . from . the . radiometer . in . order . to . get . more . accurate . results. . We . will . present .results . obtained .with . this .data. fusion .technique. and . show.comparisons . with. in-situ .measurements . from.a.nearby.radiosonde.station