PANGAEA_973375 Snow depth, sea ice thickness and interface temperatures derived from measurements of SIMBA buoy 2018T53 Preußer, Andreas; Nicolaus, Marcel; Hoppmann, Mario Snow depth, sea ice thickness and interface temperatures derived from measurements of SIMBA buoy 2018T53 2025-01-13 PANGAEA Dataset https://doi.pangaea.de/10.1594/PANGAEA.973375 Investigator Andreas Preusser Earth Science DATE/TIME LATITUDE LONGITUDE Sea ice thickness Snow thickness Sea ice thickness, uncertainty Snow thickness, uncertainty Distance, atmosphere/snow interface, relative to initial ice surface Temperature, atmosphere/snow interface Thermistor number, at atmosphere/snow interface Distance, snow/ice interface, relative to initial ice surface Temperature, snow/ice interface Thermistor number, at snow/ice interface Distance, ice/ocean interface, relative to initial ice surface Temperature, ice/ocean interface Thermistor number, at ice/ocean interface geoscientificInformation 2018T53; FMI_0503 Arctic PASSION Autonomous buoy Ice mass balance SAMS Ice Mass Balance buoy Sea ice interfaces Sea ice thickness snow depth Temperature thermistor TICE/5_2018T53 Manual classification 2018-09-12 2019-09-06 Complete 80.3744 89.8365 0.7985 -0.37400000000002365 meereisportal.de Current sea ice maps for Arctic and Antarctic Arctic_PASSION Pan-Arctic observing System of Systems: Implementing Observations for societal Needs AWI_PhyOce Physical Oceanography @ AWI AWI_SeaIce Sea Ice Physics @ AWI unrestricted CC-BY-4.0: Creative Commons Attribution 4.0 International English PANGAEA Data Publisher for Earth & Environmental Science https://www.pangaea.de/ Data Center Contact Michael Diepenbroek info@pangaea.de

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Bremen Bremen 28359 Germany online 13947 data points text/tab-separated-values Hoppmann, Mario; Belter, Hans Jakob; Riemann-Campe, Kathrin; Cheng, Bin (2026): Temperature and heating-induced temperature difference measurements from SIMBA-type sea ice mass balance buoy 2018T53 [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.967907 Jackson, Keith; Wilkinson, Jeremy; Maksym, Ted; Meldrum, David T; Beckers, Justin; Haas, Christian; Mackenzie, David (2013): A Novel and Low-Cost Sea Ice Mass Balance Buoy. Journal of Atmospheric and Oceanic Technology, 30(11), 2676-2688, https://doi.org/10.1175/jtech-d-13-00058.1 Autonomous measurements of sea ice properties of buoy 2018T53 [webpage]. SEAICE Portal, https://data.meereisportal.de/relaunch/buoy.php?lang=en&active-tab1=method&active-tab2=buoy&buoyname=2018T53&singlemap= Buoy Deployment Report 2018T53. https://download.pangaea.de/reference/125877/attachments/2018T53_deployment.pdf Preusser, Andreas (2024): Quicklook of SIMBA 2018T53. https://download.pangaea.de/reference/129724/attachments/SIMBA_QUICKLOOK_nh_2018T53_ArcPas_DATA.png

The Snow and Ice Mass Balance Array (SIMBA) is a thermistor string type IMB (Jackson et al., 2013) which measures the environmental temperature SIMBA-ET and a temperature change around the thermistors after a weak heating is applied to each sensor (SIMBA-HT). SIMBA 2018T53 (a.k.a. FMI_0503) is an autonomous instrument that was installed on drifting sea ice in the Arctic Ocean (Fedorov Transdrift XXIV (TICE) in 2018) as part of the project FMI. Its thermistor chain is 5 m long, and equipped with 241 thermistors (Maxim Integrated DS28EA00) at a spacing of 2 cm. Based on a manual classification method, the SIMBA-ET and SIMBA-HT were processed to obtain snow depth and ice thickness (smoothed with a 3-day running mean), as well as the thermistor number, the vertical position Z relative to the snow-ice interface and the measured SIMBA-ET at each detected interface (atmosphere-snow, snow-ice and ice-ocean) for the period between 2018-09-12T01:00:13 and 2019-09-06T01:00:14. To do this, we combined two derivatives of measured temperatures (the ET vertical gradient and HT rise ratio) to reduce the detection uncertainty of all interfaces considered. The snow or ice surface, consequentially the snow depth, is determined by the ET vertical gradient. Potential formation of snow ice is not explicitly considered in this data set, but may occur as depicted by vertical changes of the snow-ice interface position. The ice-ocean interface is usually determined using the HT rise ratio and serves as the lower limit for ice thickness. Overall, the accumulated error is 2 to 4 times the sensor spacing for both the snow depth and ice thickness. For interface temperatures, individual sensors in the chain measure with a temperature resolution of 0.0625°C, with the overall accuracy landing in the range of ± 2°C (Jackson et al., 2013). After the snow cover has melted, negative values for snow depth may indicate the onset of ice surface melt. ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.973375"!

http://commons.wikimedia.org/w/index.php?title=Image:Ice-floe_params_hg.png Snow thickness http://commons.wikimedia.org/wiki/File:Ice-floe_params_hg.png Sea ice thickness http://en.wikipedia.org/wiki/ISO_6709 LATITUDE http://en.wikipedia.org/wiki/ISO_6709 LONGITUDE http://en.wikipedia.org/wiki/ISO_8601 DATE/TIME https://data.meereisportal.de/relaunch/buoy.php?lang=en&active-tab1=method&active-tab2=buoy&buoyname=2018T53&singlemap= Autonomous measurements of sea ice properties of buoy 2018T53 https://doi.org/10.1175/jtech-d-13-00058.1 A Novel and Low-Cost Sea Ice Mass Balance Buoy https://doi.org/10.3030/101003472 Arctic_PASSION https://doi.pangaea.de/10.1594/PANGAEA.967907 Temperature and heating-induced temperature difference measurements from SIMBA-type sea ice mass balance buoy 2018T53 https://www.awi.de/en/science/climate-sciences/physical-oceanography.html AWI_PhyOce https://www.awi.de/en/science/climate-sciences/sea-ice-physics.html AWI_SeaIce https://www.meereisportal.de/en/ meereisportal.de https://www.sams-enterprise.com/simba/ SAMS Ice Mass Balance buoy PANGAEA_973193 DIF 9.4 2025-01-13 2026-04-10