Andreas Behrendt 25 March 2003IHOP Workshop IHOP Intercomparisons Selection of Case Studies & First Quicklooks Andreas Behrendt, Thorsten Schaberl, Hans-Stefan.

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Institut für Physik der Atmosphäre Institut für Physik der Atmosphäre High Resolution Airborne DIAL Measurements of Water Vapor and Vertical Humidity Fluxes.

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Institut für Physik der Atmosphäre Institut für Physik der Atmosphäre High Resolution Airborne DIAL Measurements of Water Vapour and Vertical Humidity.

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Andreas Behrendt 25 March 2003IHOP Workshop IHOP Intercomparisons Selection of Case Studies & First Quicklooks Andreas Behrendt, Thorsten Schaberl, Hans-Stefan Bauer, Volker Wulfmeyer, Cyrille Flamant, Christoph Kiemle  WALES  IHOP Intercomparison Table  Airborne-airborne intercomparisons  Airborne-ground intercomparisons  First Quicklooks  Conclusions & Outlook Contents

Andreas Behrendt 25 March 2003IHOP Workshop Water Vapor Lidar Experiment in Space (WALES) European Space Agency Earth Explorer Mission in Phase A

Andreas Behrendt 25 March 2003IHOP Workshop  Use unique IHOP_2002 data set:  Task1: Intercomparisons and collection of data  Task2: Organization of water vapor and background data  Task3: Case studies  Task4: Input data for end-to-end performance model  Task5: Conclusion and recommendations WALES Verification

Andreas Behrendt 25 March 2003IHOP Workshop Airborne DIAL systems  DLR Falcon - H2O-DIAL  NASA DC8 - LASE  NRL P3 - LEANDREII Ground-based Raman lidar systems  SRL  CARL Lidar Instruments

Andreas Behrendt 25 March 2003IHOP Workshop 1.Collection of flight times –Mission reports –Quick looks 2.Calculating instrument distances –Ignore horizontal distances > 20 km 3.Including instrument operation times and mode –Mission reports –Communication with PIs 4.Taking data quality and weather conditions into account –Communication with PIs 1.Quick looks Selection of Case Studies Intercomparison days 

Andreas Behrendt 25 March 2003IHOP Workshop Aircraft Flight Times

Andreas Behrendt 25 March 2003IHOP Workshop Aircraft – Aircraft Distances 

Andreas Behrendt 25 March 2003IHOP Workshop Aircraft – Aircraft Distances

Andreas Behrendt 25 March 2003IHOP Workshop Lidar operation times –When were H 2 O measurements done? Lidar operation mode –Was LEANDREII pointing sideway? Weather conditions –No H 2 O data due to clouds? 2 nd step

Andreas Behrendt 25 March 2003IHOP Workshop Airborne-Airborne Intercomparison Table

Andreas Behrendt 25 March 2003IHOP Workshop Airborne-Airborne Intercomparison Table 7 profilesNo direct comparisons possible. 2 formation flights + 3 profiles

Andreas Behrendt 25 March 2003IHOP Workshop Airborne/Ground-Based Intercomparisons SRL site

Andreas Behrendt 25 March 2003IHOP Workshop Two aircrafts: First priority :11 – 20:39 UTC (DLR DIAL and LEANDREII against SRL) :52 – 21:32 UTC (DLR DIAL and LASE against SRL) :56 – 19:41 UTC (DLR DIAL and LEANDREII against SRL) :55 – 20:31 UTC (DLR DIAL and LASE against SRL) :59 – 18:49 UTC (DLR DIAL and LASE against SRL) One aircraft: Second priority: :50/18:15/18:49 UTC (DLR DIAL against SRL) :10/17:16/19:49 UTC (LEANDREII against CARL) :47/02:58/06:21 UTC (LASE against CARL) :09/18:13/19:13/20:08 UTC (LASE against SRL) Airborne/Ground-Based Intercomparisons Many profiles for SRL and two aircrafts.

Andreas Behrendt 25 March 2003IHOP Workshop First Quicklook: 7/8 June 2002 LeandreII/DLR-DIAL Formation Flight

Andreas Behrendt 25 March 2003IHOP Workshop First Quicklook: 7/8 June 2002 LeandreII/DLR-DIAL Formation Flight

Andreas Behrendt 25 March 2003IHOP Workshop Mixing Ratio, g/kg P3-

Andreas Behrendt 25 March 2003IHOP Workshop  DIAL/DIAL formation flight comparisons: - Falcon/P-3: 19 May (~ 9 minutes) and 07 June (~ 10 minutes)  DIAL/DIAL profile/profile: - no P-3/DC-8 - Falcon/DC-8: 7 profiles - Falcon/P-3: 3 additional profiles  DIAL/ground-based SRL: many profiles available  DIAL/ground-based CARL: - P-3 and DC-8: max. 3 profiles each on and 2.6., resp.  DIAL/dropsondes, DIAL/AERI ??? Conclusions

Andreas Behrendt 25 March 2003IHOP Workshop  Several comparisons of DIAL systems available to investigate systematic errors  Large amount of data available to specify noise errors and the effects of atmospheric inhomogeneities for WALES  Cases selected, data intercomparison ongoing! Outlook

Andreas Behrendt 25 March 2003IHOP Workshop

Andreas Behrendt 25 March 2003IHOP Workshop 19 May 2002: DLR DIAL/LEANDREII formation flight comparison BLH day for task 4 studies. 24 May 2002: DLR DIAL/LASE comparisons CI day for task 4 studies. 29 May 2002: DLR DIAL/LEANDREII intercomparison data points. Homestead intercomparison day (DLR DIAL/SRL and LEANDREII/SRL). BLH day for task 4 studies. 3 June 2002: Spare day for data analysis. 7/8 June 2002: DLR DIAL/LEANDREII formation flight. E-LLJ day for studies within task 4. 9 June 2002: Spare day for data analysis. 14 June 2002: DLR DIAL/LASE comparisons. Homestead intercomparisons (DLR DIAL/SRL, LASE/SRL) BLE day for task 4 studies All Possible Intercomparisons: