Infrared camera raw data (ir_variocam_01) at the remote sensing site on the ice floe during MOSAiC expedition 2019/2020
Spreen, Gunnar; Huntemann, Marcus; Thielke, Linda; Naderpour, Reza; Mahmud, Mallik; Tavri, Aikaterini
Spreen, Gunnar; Huntemann, Marcus; Thielke, Linda; Naderpour, Reza; Mahmud, Mallik; Tavri, Aikaterini (2022): Infrared camera raw data (ir_variocam_01) at the remote sensing site on the ice floe during MOSAiC expedition 2019/2020 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.940717

ELEVATION START: -4300.8 m
ELEVATION END: -4405.8 m
O2A REGISTRY URI: https://registry.o2a-data.de/items/4191
CAMPAIGN: PS122/1 (MOSAiC20192020)
BASIS: Polarstern
METHOD/DEVICE: Infrared camera (IR_CAM)
COMMENT: End of recording after battery ran out after ice break-up on 16.11.; First recording of IR camera at remote sensing site. incidence angle 40°; facing southerly (exact heading to be determined); about 2.5m height (exact height to be determined)

Start of Event: PS122/1_1-99
ELEVATION START: -4300.8 m
O2A REGISTRY URI: https://registry.o2a-data.de/items/4191
CAMPAIGN: PS122/1 (MOSAiC20192020)
BASIS: Polarstern
METHOD/DEVICE: Infrared camera (IR_CAM)
COMMENT: End of recording after battery ran out after ice break-up on 16.11.; First recording of IR camera at remote sensing site. incidence angle 40°; facing southerly (exact heading to be determined); about 2.5m height (exact height to be determined)

O2A REGISTRY URI: https://registry.o2a-data.de/items/4191
CAMPAIGN: PS122/1 (MOSAiC20192020)
BASIS: Polarstern
METHOD/DEVICE: Infrared camera (IR_CAM)
COMMENT: End of recording after battery ran out after ice break-up on 16.11.; First recording of IR camera at remote sensing site. incidence angle 40°; facing southerly (exact heading to be determined); about 2.5m height (exact height to be determined)

End of Event: PS122/1_1-99
ELEVATION END: -4405.8 m

ELEVATION START: -4419.3 m
ELEVATION END: -4410.5 m
COMMENT: IR camera measurements at new Remote Sensing Site 2. ; started recording for testing at lower height of tripod; Start of regular measurements. Height of IR camera: 230 cm; heading 295°; elevation angle: 75° (15° on scale); short break of measurements due to network problems.; restart of measurements after network problem; ebox PC shut down for unknown reason; restart after ebox PC failure; now with working network connection

Start of Event: PS122/1_1-258
COMMENT: IR camera measurements at new Remote Sensing Site 2. ; started recording for testing at lower height of tripod; Start of regular measurements. Height of IR camera: 230 cm; heading 295°; elevation angle: 75° (15° on scale); short break of measurements due to network problems.; restart of measurements after network problem; ebox PC shut down for unknown reason; restart after ebox PC failure; now with working network connection

COMMENT: IR camera measurements at new Remote Sensing Site 2. ; started recording for testing at lower height of tripod; Start of regular measurements. Height of IR camera: 230 cm; heading 295°; elevation angle: 75° (15° on scale); short break of measurements due to network problems.; restart of measurements after network problem; ebox PC shut down for unknown reason; restart after ebox PC failure; now with working network connection

COMMENT: thin ice: thin ice at crack; 30° incidence angle; height 225 cm; heading NNW thin ice thickness 9 cm; salinity under the ice: 31.6 psu ; end of 1. recording when battery ran out.; 2nd recording at thin ice crack after battery exchange.; End of 2nd recording after battery ran out

Start of Event: PS122/1_8-108
COMMENT: thin ice: thin ice at crack; 30° incidence angle; height 225 cm; heading NNW thin ice thickness 9 cm; salinity under the ice: 31.6 psu ; end of 1. recording when battery ran out.; 2nd recording at thin ice crack after battery exchange.; End of 2nd recording after battery ran out

ELEVATION: -4401.7 m
LOCATION: Arctic Ocean
COMMENT: Recording continued from Leg 1

ELEVATION: -4415.3 m
LOCATION: Arctic Ocean
COMMENT: relocation by about 20m, kept looking direction

COMMENT: relocation by about 20m, kept looking direction

COMMENT: took ir camera out for a transect together with vis_infralan_01, Balamis Ariel and KuKa

COMMENT: took ir camera on a repeated lead transect from the day before together with vis_infralan_01, KuKa and Balamis

COMMENT: The IR thermal camera was re-deployed at the new RS site (at the corner of the BGC1) and started recording on this date.

COMMENT: Recording continued from leg2

COMMENT: IR-Camera measurements at the remote sensing site; Deployment at the remote sensing site. Camera height: 217 cm Camera angle: 63° (relative to Nadir); Frame rate of 5 minutes. Looking to the ice surface of the remote sensing site.; Turning of Camera to the melt pond. Same spot at the remote sensing site.; Turn to remote sensing site. During check: no GPS data (GPS removed to be exchanged); angle change of IR-Camera to 74°relative to Nadir ; Stopped recording for GPS exchange. At 06:02 UTC start of new recording.; Lead event observation start at 10:16 UTC. Moving to lead event: from 09:58 to 10:16 UTC. Camera height: 220 cm +- 5cm (to lead surface) Camera angle: 62° relative to Nadir.; IR camera setup ran out of power. Restart on 28.8.2020.; Restart of recording after power failure. IR Camera out of power at Lead event from Aug 26 evening until Aug 28 05:20 UTC. Restart of Camera at the remote sensing site with view to the remote sensing site at 5:20 UTC Height: 230 cm; Angle: 61° relative to Nadir ; Melt pond measurement at remote sensing site from 9:10 to 10:20 UTC. Positioning of Camera: 09:00-09:10 and 10:20-10:27 UTC. Around 9:00 UTC ice on lense removed (pictures beforehand could be affected) Pond ice thickness 2.6 and 3.4 +/- 0.3 cm. Snow thickness on pond 0.3 cm ; Repositioned camera to the outer side of ELBARA to make space for the SSMI radiometer. Increased incidence angle to 72.6° to get sky in IR image (start of move at 04:55).; Camera ran out of battery because of a plug connection problem.; Restart of camera after power failure. Lens has icing. ; icing on lens removed; Moved camera to melt pond next to RS site (together with HUTRAD, L-SCAT, Ku/Ka-radar).; Moved camera back to RS site after melt pond measurements.; Moved IR cam to melt pond at RS site. 05:25 start of MP measurements 06:15 end of MP measurements moved back to RS site; Emissivity experiment at met city (extra DevOps); Back at RS site: 10:48 UTC with 70° relative to Nadir.; End of recorded data on ebox PC. No further data were recorded. Reason not known.; Measurement at Lead next to Balamis Radiometer. Camera setting: height (relative to ice, not lead); ~220 cm; angle (relative to Nadir): 70°

End of Event: PS122/5_58-39

COMMENT: Emissivity experiment at Met City; Single snap shots of specific spots. Direct surface measurement of surface temperature with the 'aari_thermometer'. Close to the radiation station for surface energy balance investigation.; End of experiment.

COMMENT: 1st ice station on way back; Measurements every 10 seconds along short transect. Start at bow of ship walking towards the lead at 4 o'clock from the ship. Intermediate stops every 25 to 50 m for Ariel L-band radiometer measurements.; recording stopped for unknown reasons (probably short circuit in battery box). Only half of transect covered.

COMMENT: 2nd ice station on transit back; Measurements every 10 seconds along short transect. Start at bow of ship walking towards the lead at 4 o'clock from the ship. Intermediate stops every 50 to 100 m for Ariel L-band radiometer measurements.; End of measurement.

COMMENT: Transect during 3rd ice station; Measurement during transect from ship to lead in 4 o'clock position. Parallel to Balamis ARIEL radiometer, ice and snow thickness. Additional measurements of snow properties and surface energy budget. ; End of transect.