1. 1 CALIPSO Status and Plans Dave Winker Winds Working Group, 16-17 June 2009, Wintergreen, VA

2. 2 CALIPSO Highlights Baseline 3-year mission completed, mission extension approved Switched to backup laser, March 2009 Third anniversary of “first light”: 7 June > 120 CALIPSO papers in print or submitted JTech special issue on CALIPSO instruments and algorithms JGR special issue “CALIPSO and the A-train” underway –35 papers submitted and under review Joint CP-CS science team meeting, 28-31 July, Madison

3. 3 CALIPSO Data Used in 47 Countries USA China Japan (as of Sept 2008)

4. 4 JTech special issue on CALIPSO algorithms 8 papers now in press –Winker et al., 2009: Overview of the CALIPSO mission and CALIOP data processing algorithms –Hunt, et al. - lidar instrument and performance –Powell, et al.- Lidar 532 nm calibration –Liu, et al. - Cloud and Aerosol Discrimination Algorithm –Young and Vaughan - extinction retrieval algorithm –Vaughan, et al. – layer detection algorithm –Hu et al. - Version 3 I/W phase algorithm –Omar, et al – aerosol typing algorithm Several more papers underway: –CALIOP detection –IIR and WFC instruments and algorithms

5. 5 Laser/Data Production Status LOM-2 turned off 16 Feb 2009 –Laser operation became erratic due to slow pressure leak in canister LOM-1 turn-on operations commenced, 9 March Data acquisition with LOM-1 since 12 March LOM-1 performance as-good or better than initial LOM-2 –LOM-1 pressure holding well (better than predicted) Data acquired since 12 March has now been processed, to be released soon Current processing: L1 using Version 3 code, L2 using V2.02

6. 6 LOM-2 Pulse Energy Trend 1.61 billion shots on-orbit energy decreased 6.5% (14.7 mJ) 10 (out of 192) bar drops over life no adjustments required adjustment threshold

7. 7 Laser Energy Comparison 7

8. 8 Laser Canister Pressure 8

9. 9 CALIOP Version 3 Data Products Current version: 2.02 Version 3 data products to be released soon –All lidar data from beginning of mission will be reprocessed Level 1 data –Goal for calibration uncertainty, radiometric stability: 5% –Improved 532 nm daytime calibration >30 km Rayleigh calibration can only be done at night >Daytime uncertainties improved from 10% to 5% –1064 nm calibration: significant biases remain >Initial approach using cirrus targets determined to be unreliable >Investigating new approaches (sea surface, etc.) –Version 3 processing of March-May 2009 completed >Level 1 data to be released this week

10. 10 CALIOP Version 3 Data Products (cont’d) Level 2 data –New: >particle depolarization, particle color ratio >IWC/IWP, shape parameter (ice), column OD –Uncertainties provided for most parameters –Many bugs fixed –New I/W phase algorithm: adds random and oriented ice –Aerosol and cloud profile products restructured and improved >Aerosol horizontal averaging reduced >Many additional parameters >Data quality information now included

11. 11 Restructured Profile Products Version 2 profile products: –Profiles of aerosol and cloud 532 and 1064 extinction and backscatter only –Cloud profiles reported at 5 km –Aerosol profiles averaged to 40 km Both aerosol and cloud profile products now retrieved at 5-20-80 km and reported at 5-km horizontal resolution Additional profiles: –532 nm perpendicular backscatter and particle depolarization –Aerosol/cloud mask –Aerosol/cloud type Data quality information –CAD score –Ext_QC flag –Feature type QA flags

12. 12 Boundary layer cloud clearing In Version 2, clouds below 4 km not cleared properly Cloud-contaminated aerosol classified as ‘cloud’ Cloud-clearing scheme fixed in Version 3

13. 13 Brian.J.Getzewich@nasa.gov 13 Trade cumulus scene V2.01 V3 (correct) cloud aerosol

14. 14 Impact of bug fixes on low cloud distribution Version 2.01 Global mean = 0.456 (low clouds) Version 3, alpha-3 test Global mean = 0.374 (low clouds)

15. 15 Fractional change, V2.01  alpha-2

16. 16 Penetration statistics Zonal average penetration frequency (5-km average profiles) Global average (single shots) CALIPSO LITE 6 km 58% 90% 4 km 52 85 2 km 43 77 Sfc 31 40 CALIPSO LITE orbit 705 km 260 km energy 110 mJ 500 mJ

17. 17 Version 3 Ice/Water Phase Algorithm (Yong Hu, et al., Optics Express, 2007) water ice    IAB  Oriented crystals HOI water ROI (Yong Hu, et al., JTech, 2009)

18. 18 Reduced artifacts in cloud Ice/Water phase Number of ‘ice’ clouds with tops below 3.25 km Oriented ice now properly classified (HOI  water in V2) Version 2.01 Version 3

19. 19 I/W phase algorithm: Zonal fraction of ice, water V2 (Jan) V3 (Aug)

20. 20 CALIPSO clouds vs. LMD GCM clouds CALIPSO LMD GCM

21. 21 CALIPSO provides new tests of model aerosols East Pacific (130-180W) CALIPSO GMAO RAQMS East Asia (110E – 130E) monthly zonal mean extinction(courtesy C. Kittaka)

22. 22 Looking toward a long-term lidar data record Potential CALIPSO life through 2012/13 The WMO-GALION program has recognized that a long-term record from ground lidars is necessary to provide a translation between the CALIPSO and ADM/EarthCare aerosol records As part of GALION, the EARLINET network has been taking ground-based measurements beginning in July 2006 CALIPSOADMEARTHCAREACEImpacts Launch200620112013/142020? ObjectiveAerosol and cloud windsAerosol and cloud LidarbackscatterDopplerHSRL Wavelength532/1064355 355/532/1064Aerosol properties Depolarizationyesnoyes I/W phase, dust