Slide 1Slide 2Slide 3Slide 4Slide 5Slide 6Slide 7Slide 8Slide 9Slide 10Slide 11Slide 12Slide 13Slide 14Slide 15Slide 16Slide 17Slide 18Slide 19Slide 20Slide 21Slide 22Slide 23Slide 24Slide 25Slide 26Slide 27Slide 28Slide 29Slide 30Slide 31Slide 32Slide 33Slide 34Slide 35Slide 36Slide 37Slide 38Slide 39Slide 40Slide 41Slide 42Slide 43Slide 44Slide 45Slide 46Slide 47Ben KravitzNovember 5, 2009CALIPSOWhat is CALIPSO?CALIPSO is (among a couple of other things) a space-based LIDARLaunched in 2005Flies on the A-train•Statistics on the vertical structure of clouds•Geographic and vertical distribution of aerosols around the world•Detection of sub-visible cirrus and polar stratospheric clouds•Indirect estimate of the radiative contribution of aerosolsWhat CALIPSO does•532 nm: 2 orthogonal channels•1064 nm: 1 channelTechnical Specifications•Doesn’t have to worry about low clouds getting in the way of observations of the upper troposphere•Can survey more than one areaAdvantages of Space-Based LIDARSample CALIPSO retrievalshttp://www-calipso.larc.nasa.gov/products/lidar/browse_images/show_calendar.phpEach page has approx. 34 images on itPath of the satellite on the specified dayAlso has images of just daytime and just nighttimePolar stereographic projectionsClickable pieces of the orbitsWe’ll click on the blue section of the first pictureWe get 9 more imagesThe blue section is now highlighted (to remind us what we clicked)Polar projectionsThis orbit doesn’t pass over the ArcticThis orbit does pass over the Antarctic, but that’s not the part we clickedFirst main image: 532 nm total backscatterSecond image: 532 nm perpendicular backscatterThird image: 532 nm depolarization ratioFourth image: 1064 nm backscatterFifth image: Attenuated Color RatioSixth image: Vertical Feature MaskSo let’s look at some interesting featuresWe’ll go through two of the (four) colors on this onePurple StripPurple StripPurple StripPurple StripPurple StripPurple StripGreen StripGreen StripGreen StripGreen StripGreen StripGreen StripOccasionally you’ll get something that looks like thisNotice the really interesting feature over the green/red area (Antarctica)More fun
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