US Calibration/Validation Activities for the ADM/Aeolus Mission

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US Calibration/Validation Activities for the ADM/Aeolus Mission. Mike Hardesty and Lars-Peter Riishojgaard. Cal/Val information from Recent ADMAG. Purpose of Cal/Val exercise Quantify accuracy of primary and auxiliary parameters Characterize deviations - PowerPoint PPT Presentation


  • US Calibration/Validation Activities for the ADM/Aeolus MissionMike HardestyandLars-Peter Riishojgaard

  • Cal/Val information from Recent ADMAGPurpose of Cal/Val exerciseQuantify accuracy of primary and auxiliary parametersCharacterize deviationsRecommendations for improvements to processingTwo phases will be commissioned: First (commissioning) and Second (routine)Call will be worldwideProposers must bring their own fundingAccess to data only through cal-val teamAnnouncement of Opportunity: October 1

  • Specific ADM-Aeolus issues for airborne and ground validations (Oliver Reitebuch)

    Does ALADIN need calibration or only validation?burst-mode operation: Can time and location of satellite observation be predicted or even commanded, e.g. by start time of laser burst operation?opportunity for validations for 50-km scale observationssatellite-ground: once every 5-10 days in 50 km distancesatellite-aircraft: 2-3 flights in 1 geographical region with 7 s observation time on satellite compared to 4 minutes on aircraft => allows to study measurement (1-10 km) to observation scale (50 km) issuesGround wind observations of horizontal wind vector needs to be projected onto satellite LOS directionL1B Mie winds can be validated with wind measuring instruments; L1B Rayleigh winds (uncorrected for T) can not be validated with other wind measuring instruments, except with A2D which measures also uncorrected Rayleigh windL2A aerosol products (backscatter, extinction, cloud base) can be validated, but most ground based lidars point toward zenithL2B wind products can be validated both for Mie and Rayleigh

  • 1a/b. What are Level-2B/2C Products?

  • 1a/b. What are Level-2B/2C Products?2B: Meteorologically representative HLOS profilesretrieval algs applied to Level-1B data, 2B-output suitable as input to data assimilationauxiliary input data: T & p, Rayleigh-Brillouin response data, etc2C: Meteorologically representative wind vector profilesresult of a data assimilation algorithm, combining Level-2B with other data/weather forecast modelHow do they differ from Level-1B Products?Rayleigh channel retrieval accounts for T & p effectsmeasurements grouped/weighted by features detected in the atmospheric scene (primarily clouds & aerosol)

  • Assembling a US cal/val effortDevelop a proposal to respond to ESA AOPut together a team Define major elements of a US cal/val effortDirect Observations for comparisonData evaluation through assimilation into modelsExplore funding opportunities (ESA will not provide funding)

  • Potential Direct ObservationsLong term, statistical comparisonsNWS Wind Profiler NetworkBoundary layer profilersRadiosondesIn situ sensors on commercial aircraftCloud track winds Water vapor windsSurface based lidar measurements during satellite overpassesMeasurement comparison campaignsTwiLite Airborne lidarTODWLS NOAA Airborne HRDLNotional Hybrid lidar (direct and coherent)

  • How to proceed?Develop a basic outline for the cal/val effortMH and LPR will be points of contact Interested parties should provide input and outline potential contributions within next two monthsDevelop funding sourcesPotential for funds in the FY 2010 NOAA budget for ADM cal-val activitiesExplore opportunities for NPOESS, NASA and DOD fundingRiishojgaard and Hardesty will develop proposal for submission


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