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Fuchs, Niels; Kagel, Torbjoern; Katlein, Christian; Lei, Ruibo; Nicolaus, Marcel; Notz, Dirk; Riemenschneider, Leif (2024): Measurements of in-ice light profiles and optical properties of Arctic sea ice on MOSAiC 2020: Unified NetCDF data from the lightharp and lightchain instruments [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.963743

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Abstract:
During the MOSAIC expedition, we deployed in-ice light measuring buoys, lightharp, and lightchains into the ice to investigate light partitioning and irradiance at different layers and depths in sea ice. The dataset presented here contains processed data from both instrument systems, containing derived optical properties, PAR data, and auxiliary data for each deployment site. Auxiliary data gives information on the position, snow, and ice thickness statistics, and surface melt that changes the relative vertical position of the measurements. Auxiliary data was retrieved from SIMBA buoys deployed in the vicinity of the optical instruments. All data are provided in NetCDF format. The dataset includes processed data from the lightharp and three light chains (one redeployed on Leg5) from MOSAiC. The instruments were deployed at four different sites during MOSAiC: LM site (SYI dark coring site), L3 site, Pond site on Leg5 and within the Central Observatory (CO). The first part of the filenames reflects the deployment site. The second part gives the buoy name to which the optical sensors were connected and the last part the measurement period in YYMMDD. The NetCDF files were compiled using the profile_trajectory standard from CF conventions. Multiple directly measured and derived data layers are included with data coordinates depth and nominal_date. Nominal_date is the time of the uppermost valid measurement of a profile. Furthermore, files contain a set of already published auxiliary data describing the snow- and ice thickness statistics at the measurement sites (mean, max, min, and std) and a proxy for surface melt, that changes the vertical position of the frozen-in sensors. The lightharp data furthermore contains snow thickness from SIMBA buoy T62 and an individual surface melt approximation derived with temperature measurements at the optical sensors and surface melt rates. Data PIs and further helpful information is included in the attributes.
Keyword(s):
Arctic; Light; lightchain; lightharp; MOSAiC expedition; optics; PAR; Sea ice
Source:
Fuchs, Niels; Notz, Dirk; Riemenschneider, Leif; Katlein, Christian; Anhaus, Philipp; Raphael, Ian (2023): In-ice light and temperature profile measurements on MOSAiC with the light harp sensor - raw data. PANGAEA, https://doi.org/10.1594/PANGAEA.951614
Lei, Ruibo; Cheng, Bin; Hoppmann, Mario; Zuo, Guangyu (2021): Snow depth and sea ice thickness derived from the measurements of SIMBA buoys deployed in the Arctic Ocean during the Legs 1a, 1, and 3 of the MOSAiC campaign in 2019-2020. PANGAEA, https://doi.org/10.1594/PANGAEA.938244
Funding:
Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven (AWI), grant/award no. AFMOSAiC-1_00: Multidisciplinary drifting Observatory for the Study of Arctic Climate
Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven (AWI), grant/award no. AWI_PS122_00: Multidisciplinary drifting Observatory for the Study of Arctic Climate / MOSAiC
Federal Ministry of Education and Research (BMBF), grant/award no. 03F0867A: MOSAiC 1 - NiceLABpro: Entwicklung und Analyse neuartiger Modellieransätze zur Wechselwirkung von Licht, Meereiseigenschaften und Meereisökosystem aus MOSAiC Messdaten
Coverage:
Median Latitude: 82.786151 * Median Longitude: 37.048748 * South-bound Latitude: 77.173200 * West-bound Longitude: -5.243960 * North-bound Latitude: 88.920580 * East-bound Longitude: 135.678000
Date/Time Start: 2020-01-15T00:00:00 * Date/Time End: 2020-10-25T00:00:00
Minimum Elevation: -4318.6 m * Maximum Elevation: -1122.3 m
Event(s):
AF-MOSAiC-1_99 (PS122/1_1-173, 2019T70, FMI_06_03) * Latitude Start: 85.128200 * Longitude Start: 135.678000 * Latitude End: 79.759730 * Longitude End: -4.958560 * Date/Time Start: 2019-10-09T01:00:00 * Date/Time End: 2020-08-07T13:30:00 * Sensor URI: sensor.awi.de * Location: Arctic Ocean * Campaign: AF-MOSAiC-1 (MOSAiC20192020, AF122/1) * Basis: Akademik Fedorov * Method/Device: SAMS Ice Mass Balance buoy (SIMBA) * Comment: IRIDIUM number 300234068705280; Station L3__Measurement:Snow and ice temperature profile__Comment:ice: 45 cm ice snow: 6 cm__Old Labels:L3_SIMBA4_PRIC_20191010,PS122/1_1-173; recovery: PS122/4_43-174
PS122/1_1-124 (2019T66) * Latitude Start: 85.648370 * Longitude Start: 125.509030 * Latitude End: 77.173200 * Longitude End: -5.243960 * Date/Time Start: 2019-10-29T01:30:00 * Date/Time End: 2020-08-14T09:00:00 * Sensor URI: sensor.awi.de * Campaign: PS122/1 (MOSAiC20192020) * Basis: Polarstern * Method/Device: SAMS Ice Mass Balance buoy (SIMBA) * Comment: deployed at the coring site of first-year ice; Total failure: 2020-08-14
PS122/1_1-125 (2019T62, PRIC_09_01) * Latitude Start: 85.646460 * Longitude Start: 125.472180 * Latitude End: 78.802415 * Longitude End: -2.393845 * Date/Time Start: 2019-10-29T00:45:00 * Date/Time End: 2020-08-01T10:00:00 * Sensor URI: sensor.awi.de * Campaign: PS122/1 (MOSAiC20192020) * Basis: Polarstern * Method/Device: SAMS Ice Mass Balance buoy (SIMBA) * Comment: LM site, recovery: PS122/4_43-156; IRIDIUM number: 300234068706290
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
SiteSiteFuchs, Niels
DATE/TIMEDate/TimeFuchs, NielsGeocode – Start date
DATE/TIMEDate/TimeFuchs, NielsGeocode – End date
GearGearFuchs, Niels
netCDF filenetCDFFuchs, Niels
netCDF file (File Size)netCDF (Size)BytesFuchs, Niels
netCDF file (MD5 Hash)netCDF (Hash)Fuchs, Niels
Status:
Curation Level: Basic curation (CurationLevelB) * Processing Level: PANGAEA data processing level 4 (ProcLevel4)
Size:
18 data points

Data

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Site

Date/Time
(Start date)

Date/Time
(End date)

Gear

netCDF

netCDF (Size) [Bytes]

netCDF (Hash)
CO2020-03-082020-03-232020R10CO_2020R10_200308_200323.nc2.3 MBytesf1c4efcadb05818b90356c52408f1961
L32020-04-242020-08-072020R12L3_2020R12_200424_200807.nc9 MBytesafbaaee4355b1f4f6d1e0552aae08879
Leg52020-08-252020-10-252020R21Leg5_2020R21_200825_201025.nc8.9 MBytesbff8ffeb9b49da85d3d09f905ee35a7a
LM2020-03-262020-07-222020R11LM_2020R11_200326_200722.nc18.1 MBytes621b90e533a9033dd62105d2ae992f00
LM2020-01-152020-07-18lightharp1LM_lightharp1_200115_200718.nc3.3 MBytes7ba7be7157c863927d4e99c3825ab1d4
LM2020-01-152020-07-18lightharp1_layerLM_lightharp1_layer_200115_200718.nc3.4 MBytesf0bdf7f8002558acbb7ed17ec235dc9f