https://doi.pangaea.de/10.1594/PANGAEA.996934Ringel, Maximilian HaraldMaximilian HaraldRingel0000-0002-0600-135XInstitute of Environmental Physics, University of BremenSpreen, GunnarGunnarSpreen0000-0003-0165-8448Institute of Environmental Physics, University of BremenKrumpen, ThomasThomasKrumpen0000-0001-6234-8756Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, BremerhavenNeudert, MaraMaraNeudertAlfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, BremerhavenPANGAEA2026ArcticCONTRASTS expeditionelectromagnetic inductionGEM-2Geophexmagnaprobemelt pond depthoceanPS149RV PolarsternSea iceSea ice thicknesssnow depthDATE/TIMELATITUDELONGITUDESnow depthMelt pond depthMagnaprobePS149PolarsternArctic Amplification (AC3)2025-07-31T12:43:55/2025-07-31T14:37:13Datasethttps://doi.pangaea.de/10.1594/PANGAEA.99690710.57738/BZPM_0808_2026849 data pointstext/tab-separated-valuesCreative Commons Attribution 4.0 InternationalThis dataset contains the measurements of snow/SSL (surface scattering layer) depth or melt pond depth from a walk across the sea ice floe (called long transect) during ice station PS149_25-1 (floe 2b) of the PS149 CONTRASTS expedition. The long transect was traversed across the ice floe with a GPS-equipped MagnaProbe to obtain statistically representative distributions of snow/SSL and pond depth. The transect was marked with flags at its corner points to ensure that a similar track was measured during repeated visits to the ice floe. Along the same transect track the total sea ice thickness (sea ice thickness + snow / SSL or melt pond depth) was measured unsing a Geophex Ltd. GEM2-730 instrument. These GEM measurements are available in the other dataset of this collection: https://doi.pangaea.de/10.1594/PANGAEA.996933. Since the GEM and MagnaProbe measurements at this station were conducted on two consecutive days, ice floe drift between the surveys would make precise spatio-temporal co-location of the datasets unreliable. Therefore, the measurements are provided as separate datasets without any drift correction. However, both were collected along the same marked transect track. The measurements of all other PS149 ice stations are co-located and available here: doi:10.1594/PANGAEA.996908. More detailed explanations about the data processing and the co-location of both measurements can be found in the comment section of the dataset collection: https://doi.pangaea.de/10.1594/PANGAEA.996907.17.399633417.6154283.706706783.7152134Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhavenhttps://doi.org/10.13039/501100003207AWI_PS149_01Sea Ice Physics (CONTRASTS)German Research Foundationhttps://doi.org/10.13039/501100001659268020496TRR 172: ArctiC Amplification: Climate Relevant Atmospheric and SurfaCe Processes, and Feedback Mechanisms