CA18/208, flight day 234/2018, Ontario, Canada

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Data location: /users/rsg/arsf/arsf_data/2018/flight_data/canada/CA18_207-2018_234_Ontario

Data arrived from NERC-ARF via hard driver on 12/09/2018

Scientific objective: Canadian Wildfire Observations with SLSTR & Aircraft: Directional Effects of Thermally Emitted Radiation & Exploration of Flaming/Smouldering Partitioning and Plume Trace Gas Emission Ratios. Fenix and Owl data are being processed to aid geocorrection of other thermal sensors flown on the aircraft.

PI: Martin Wooster

BAS Project Code: D207

• Missing Owl calibration data
• Owl line 234-18_234-18_2018-08-22_16-53-50 contained no header data so removed.
• Navigation data (.sol format) and level1b (unmapped) data to be delivered first. The level1b data will be used to determine which lines map.

Sensors:

• Fenix (requested, flown)
• Owl (requested, flown)

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Fenix

Quickly processed Fenix data to 1b to test script. Command used:

batch_aplcal.py -i hyperspectral/fenix/ -o processing/hyperspectral/flightlines/level1b/ \
               -l processing/hyperspectral/logfiles/ \
              --calfile ~arsf/calibration/2018/fenix/fenix_201805 --grid

[asm]

Unpacking
-There are 11 owl lines and 11 fenix.
-All owl lines have T1 and T2 calibration files

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Owl Processing

Started in order to create the level1b files.

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Navigation Processing

Subset basestation data to single day using:

teqc -st 20180822000000 -e 20180822235959 +nav Default_9488_0509_114526.18n \
           Default_9488_0509_114526.m00 > Default_9488_0509_114526.18o

Got antenna info from file (LEIAX1202GG) and used height of 0.889 m provided by Gary.

Basestation PPP result

Latitude	51 04 01.40114
Longitude	-93 48 14.26959
Ellipsoid Height	345.856 m

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Navigation Processing

Processed navigation data. Reduced elevation mask to 8 degrees to get better result. Position separation is higher than normal but within 10 cm for most of flight.

[wja]

Hyperspectral Processing
SRTM DEM created.

[wja]

Owl Processing
Starting Owl processing.

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Fenix Processing

Needed to increase buffer around DEM to 0.5 degrees so generate_apl_config.py would run through.

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Fenix Processing

Found SCT values

Flightline	FENIX
1	2
2	2
3	2
4	2.9
5	2
6	2
7	2
8	2
9	2
10	2
11	1

Changed pixel size from 5 m to 3 m. Given altitude is 3.5 m at nadir and 3.76 at the edge of swath. Went for 3 rather than 4 as high resolution is required to match other cameras to.

Starting mapping all bands.

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Owl Processing

Flightline	SCT
1	N/A
2	2.00
3	2.00
4	2.00
5	2.00
6	2.00
7	2.00
8	2.00
9	2.00
10	2.00
11	2.00

Flightline 1 header file reports 1024 lines, however, level1b *BIL shows ~520 lines (no errors in log). This is too small to be useful and will be omitted from further processing.
Three band BIL of flightline 10is noisy.

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Fenix Processing

All bands mapped. Generating delivery.

[wja]

Owl Processing
Flightline 10 T1 calibration file has some strange features resulting in poor quality. Reprocessed with calibration files (T1 & T2) from flightline 11 (close and only flight with same integration time) and looks acceptable.
All mapped flightlines have been processed.
Generating delivery.

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Fenix Processing

Delivery created, ready for checking.

[wja]

Owl Delivery
Delivery created, ready for delivery check.

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Owl

Starting delivery check.

[wja]

Fenix Delivery Check
Started Fenix delivery check.

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Owl delivery check
Generally looks good, couple of comments

• In data quality section of readme non-latex character '11aZa' needs to be replaced.
• No underflows or overflows listed in readme - I'm not sure this is correct, suggest re-running autoqc.py script and checking for errors.
• check_ap_cmd ran through OK, three band for line 9 looks a bit odd though.
• Spectral for line 9 has some weird features, should add a note to the readme about it.

Once these are addressed ready to deliver.

[wja]

Fenix Delivery Check

• Logsheet line 1 has very short duration (looks like from Owl header).
• Flightline 4 is missing from navigation/, line_information/ & mapped/
• flightline/fodis needs removing.
• Logsheet metadata: weather = '?', probably best if left blank.
• Read_Me: 'logsheet file name' table is incomplete. Also picture of Dornier.
• XML files: '&' in project discription and title needs changing to '&' so that XMLs can be opened.
• Py6S looks okay, although perhaps not as precise as normal in some peaks? Can sheck this in wja's machine /tmp/fenix_vs_py6s
• check_apl_cmd ran through and looks good.
• Spectra of flightline 11 should be looked at, very little reflectance in higher wavelengths. i notice it has a shorter integration time than the others.

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Fenix processing

• Updated logsheet to use times from Fenix headers.
• Removed fodis dir
• Updated logsheet names in readme
• Replaced '&' in XML files
• Spectra look OK to me compared to simulations in Py6S
• Added note about line 11 in readme. The integration time is very short so I assume it was intentional given project aims and earlier discussions with PI.

Line 4 failed due to navigation data going backwards in time, will investigate and try to process.

[wja]

Owl Delivery

• Read_Me corrections:
  • non-LaTex charecter removed
  • auto.qc script gave no under-/over-flows; section has been removed with a mention that they should be expected due to the low integration times of this flight.
  • Description of /mosaic/ directory edited to match that of Fenix delivery.
• Flightline 9 reprocessed. T1 calibration file contain what looks like errorneous data starting after line 274, a new T1 calibration was created and used up until this line. Spectra looks as expected.

[wja]

Owl/Fenix Processing
Flightline number reference:

Logsheet (hardcopy)	Owl	Fenix
-	1 (Failed)	-
1	2	1
2	3	2
3	4	3
4	5	4
5	-	5
6.1	6	6
7	7	7
8.1	8	8
9	9	9
8.2	10	10
6.2	11	11

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Owl Delivery Check

Problems have been fixed and reprocessed line 9 looks good. Zipping mapped files and marking as ready to deliver.

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Fenix processing

Processed line 4 with -force flag and manually synced navigation using SCT value of 2.9. Added to existing delivery and recreated mosaic. Added note about line 4 to readme. Ran check_apl_command to check all files where there for line 4.

[wja]

Fenix Delivery
Ready to deliver.

[wja]

Fenix/Owl Delivery
Deliveries hardlinked to FTP slot 1, notification e-mail sent to PI. Delivery finalised.

[wja]

Archiving
JSONs created and added to PostGIS. In the queue to rsync to CEDA.

[wja]

Archiving
Upload to CEDA complete (18/01/2019)

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Data archived at CEDA

• ​https://data.ceda.ac.uk/neodc/arsf/2018/CA18_207/CA18_207-2018_234_Ontario
• ​https://data.ceda.ac.uk/neodc/arsf/raw_data/2018/CA18_207-2018_234_Ontario_raw