25 March 2003 IHOP Workshop Andreas Behrendt 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
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IHOP Intercomparisons Selection of Case Studies & First Quicklooks
IHOP Intercomparisons Selection of Case Studies & First Quicklooks. Andreas Behrendt , Thorsten Schaberl, Hans-Stefan Bauer, Volker Wulfmeyer, Cyrille Flamant, Christoph Kiemle. Contents. WALES IHOP Intercomparison Table Airborne-airborne intercomparisons Airborne-ground intercomparisons - PowerPoint PPT Presentation
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25 March 2003 IHOP Workshop Andreas Behrendt
IHOP IntercomparisonsSelection 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
25 March 2003 IHOP Workshop Andreas Behrendt
Water Vapor Lidar Experiment in Space (WALES)
European Space Agency Earth Explorer Mission
in Phase A
25 March 2003 IHOP Workshop Andreas Behrendt
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
25 March 2003 IHOP Workshop Andreas Behrendt
Airborne DIAL systems
DLR Falcon - H2O-DIAL
NASA DC8 - LASE
NRL P3 - LEANDREII
Ground-based Raman lidar systems
SRL
CARL
Lidar Instruments
25 March 2003 IHOP Workshop Andreas Behrendt
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 account1. Communication with PIs2. Quick looks
Selection of Case Studies
Intercomparison days
25 March 2003 IHOP Workshop Andreas Behrendt
Aircraft Flight TimesDay Mission Flight # Take off Landing Fl. Time Flight # Take off Landing Fl. Time Flight # Take off Landing Fl. Time
1. Priority comparison may be possible during a whole time period2. Priority some comparisons may be possible during some time points with small distances between aircrafts3. Priority only individual comparisons might be possible
BLE13:36/15:10/16:28/17:36 (<10km)
14:02/14:44/16:11 (<20km)
09.06.2002
07.06.2002
14.06.2002
03.06.2002
25 March 2003 IHOP Workshop Andreas Behrendt
• Lidar operation times
– When were H2O measurements done?
• Lidar operation mode
– Was LEANDREII pointing sideway?
• Weather conditions
– No H2O data due to clouds?
2nd step
25 March 2003 IHOP Workshop Andreas Behrendt
Airborne-Airborne Intercomparison Table
Day Mission Falcon - P3 Falcon - DC8 P3 - DC819.05.2002 BLH 16:04-16:42 F 16:30-16:39 (<10km)21.05.2002 BLH 21:13 F /23:10 P (5km)24.05.2002 CI 19:04/19:54/20:29 (<10km) # 18:49 C/20:03/21:10 (<5km) 21:40 (<10km); 20:09 (<20km) #29.05.2002 BLH 19:24 (5km); 18:16 F /20:31 (10km)
11.06.2002 CI 16:16 (<5km); 17:12/19:15 (<20km) #11:00-14:53 (0-50km) # 13:38 F/14:02 C/14:45/14:55 (<15km)16:26-18:20 (0-25km) # 16:27 F /17:36 (<10km)
15.06.2002 CI 20:13 (<5km); 18:54/19:24 (20km) #
CDFP#
1. Priority2. Priority3. Priority
BLE13:36/15:10/16:28/17:36 (<10km)
14:02/14:44/16:11 (<20km) #
02.06.2002
09.06.2002
07.06.2002
14.06.2002
03.06.2002
intercomparison may be possible during a time periodsome intercomparisons may be possible for several times with small distances between the aircraftsonly one intercomparison might be possible
no water vapor data from the DIAL system on board of the P3 ("Leandre")
no water vapor data from the DIAL systems due to clouds
Leandre was pointing sideway
no water vapor data from the DIAL system on board of the DC8no water vapor data from the DIAL system on board of the Falcon
intercomparison may be possible during a time periodsome intercomparisons may be possible for several times with small distances between the aircraftsonly one intercomparison might be possible
02.06.2002
09.06.2002
07.06.2002
14.06.2002 BLE
Airborne-Airborne Intercomparison Table
7 profiles No directcomparisons
possible.
2 formation flights+ 3 profiles
25 March 2003 IHOP Workshop Andreas Behrendt
Airborne/Ground-Based Intercomparisons
SRL site
25 March 2003 IHOP Workshop Andreas Behrendt
Two aircrafts: First priority
29.05.02 17:11 – 20:39 UTC (DLR DIAL and LEANDREII against SRL)
03.06.02 18:52 – 21:32 UTC (DLR DIAL and LASE against SRL)
07.06.02 16:56 – 19:41 UTC (DLR DIAL and LEANDREII against SRL)
09.06.02 12:55 – 20:31 UTC (DLR DIAL and LASE against SRL)
14.06.02 11:59 – 18:49 UTC (DLR DIAL and LASE against SRL)
One aircraft: Second priority:
25.05.02 17:50/18:15/18:49 UTC (DLR DIAL against SRL)
27.05.02 17:10/17:16/19:49 UTC (LEANDREII against CARL)
02.06.02 02:47/02:58/06:21 UTC (LASE against CARL)
11.06.02 17:09/18:13/19:13/20:08 UTC (LASE against SRL)
Airborne/Ground-Based Intercomparisons
Many profiles for SRLand two aircrafts.
25 March 2003 IHOP Workshop Andreas Behrendt
First Quicklook: 7/8 June 2002
LeandreII/DLR-DIAL Formation Flight
25 March 2003 IHOP Workshop Andreas Behrendt
First Quicklook: 7/8 June 2002
LeandreII/DLR-DIAL Formation Flight
25 March 2003 IHOP Workshop Andreas Behrendt
23:53:34 23:57:36 00:01:48 00:05:50 00:09:52 00:13:56 00:17:58Time, UTC
0
0.5
1.
1.5
2.
2.5
3.
3.5
z,mk
a.s.
l.
DLR- FALCON , 020607
23:53:34 23:57:36 00:01:48 00:05:50 00:09:52 00:13:56 00:17:58Time, UTC
- P-3 and DC-8: max. 3 profiles each on 27.5. and 2.6., resp.
DIAL/dropsondes, DIAL/AERI ???
Conclusions
25 March 2003 IHOP Workshop Andreas Behrendt
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
25 March 2003 IHOP Workshop Andreas Behrendt
25 March 2003 IHOP Workshop Andreas Behrendt
• 19 May 2002:DLR DIAL/LEANDREII formation flight comparisonBLH day for task 4 studies.
• 24 May 2002:DLR DIAL/LASE comparisonsCI 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