1 CALIPSO VALIDATION and DATA QUALITY IMPROVEMENT EECLAT T0, J. Pelon

2  V4 L1 products to include new calibrations of 532 nighttime (stratospheric aerosols, new GEOS 5.7 met data) and 532 daytime (signal slope correction, D/N calibration) and 1064 nm (D+N, reference scene selection) Data quality Improvement Example of results at 1064 nm for a one month test performed at LaRC

3  Elaboration of V4 L2 products under discussion  Continuation of Validation effort (impact of calibration, new products)  Aerosol characterization (regional and global)  Cloud characterization using CALIOP/IIR  Improvement of Cloud microphysical products in V4  Ongoing Case studies and statistical analyses for further characterization of processes at the regional and global scales (aerosol transport, dust, radiative impacts …) Data quality Improvement

4 Analysis of Cloud Properties  Cloud properties in V3 : - Structure, OD and IWC (CALIOP) - , OD, IWP (IIR/CALIOP)  New MODIS coll. 6 with cloud models leading to reduced ODs in better agreement with IIR  Discussion on changes in Lidar ratio for CALIOP OD retrieval ( %) Josset et al., JGR, 2012

5 IIR and CALIOP cirrus OD Single-layered semi-transparent clouds, altitude > 7km, randomly oriented ice (CALIOP flag), 5-km resolution, ocean, all latitudes, day, January CALIOP data : Lidar ratio=31.5 and Multiple scattering factor=0.6 Expected: IIR « absorption » OD eff ~ 0.5 x CALIOP total visible OD CALIOP OD/IIR OD eff = 2.0 +/- 10% in agreement with expectations and sensitivity studies. Sensitivity of IIR retrievals: good agreement with CALIOP down to ODs smaller than 0.05 Garnier et al, ILRC, 2012 Expected

6 Analysis of Cloud Properties  Cloud properties in V3 : - Structure, OD and IWC (CALIOP) - , OD, IWP (IIR/CALIOP)  New results on Cloud Microphysics from Combined CALIPSO INSTRUMENTS (IIR + CALIOP) + RTM taking advantage of IR-lidar complementarities for Day & Night analyses)  Release of L2b cloud particle size & IWP products,  Results presented in JAMC Part II (Garnier et al., submitted 2012)

7 IIR IWP for High dense clouds January 2009 D+N First L3 IIR test products obtained at ICARE to be part of CALIPSO L3 cloud product

8 IWC values directly derived from Deff and AODs using CALIOP Single-layered semi-transparent cloud, altitude > 7km, T° < 233K, data over ocean, all latitudes, Day+Night White solide line: from CIRCLE 2 campaign in Europe (Mioche et al, JGR, 2010) Green triangles from ARM & TOGA-COARE (McFarquhar et al., 2003) January 2011  IWC = f(extinction) from IIR in good agreement with in situ  IWC/ext (Heymsfield et al, GRL, 2005) used in Version 3 CALIOP shows larger values IWC Analysis from IIR Garnier et al., JAMC, subm. 2012

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