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Roosevelt Island Climate Evolution (RICE) ice core isotope record (2017)

Bertler, Nancy A ; Conway, Howard ; Dahl-Jensen, Dorthe ; [et al.]

PANGAEA

In: Supplement to: Bertler, Nancy A; Conway, Howard; Dahl-Jensen, Dorthe; Emanuelsson, Urban; Winstrup, Mai; Vallelonga, Paul T; Lee, James E; Brook, Edward J; Severinghaus, Jeffrey P; Fudge, Tyler J; Keller, Elizabeth D; Baisden, W Troy; Hindmarsh, Richard C A; Neff, Peter D; Blunier, Thomas; Edwards, Ross L; Mayewski, Paul Andrew; Kipfstuhl, Sepp; Buizert, Christo; Canessa, Silvia; Dadic, Ruzica; Kjær, Helle Astrid; Kurbatov, Andrei; Zhang, Dongqi; Waddington, Edwin D; Baccolo, Giovanni; Beers, Thomas; Brightley, Hannah J; Carter, Lionel; Clemens-Sewall, David; Ciobanu, Viorela G; Delmonte, Barbara; Eling, Lukas; Ellis, Aja A; Ganesh, Shruthi; Golledge, Nicholas R; Haines, Skylar A; Handley, Michael; Hawley, Robert L; Hogan, Chad M; Johnson, Katelyn M; Korotkikh, Elena; Lowry, Daniel P; Mandeno, Darcy; McKay, Robert M; Menking, James A; Naish, Timothy R; Noerling, Caroline; Ollive, Agathe; Orsi, Anais J; Proemse, Bernadette C; Pyne, Alexander R; Pyne, Rebecca L; Renwick, James; Scherer, Reed P; Semper, Stefanie; Simonsen, Marius; Sneed, Sharon B; Steig, Eric J; Tuohy, Andrea; Ulayottil Venugopal, Abhijith; Valero Delgado, Fernando; Venkatesh, Janani; Wang, Feitang; Wang, Shimeng; Winski, Dominic A; Winton, Victoria H L; Whiteford, Arran; Xiao, Cunde; Yang, Jiao; Zhang, Xin (2018): The Ross Sea dipole - temperature, snow accumulation and sea ice variability in the Ross Sea region, Antarctica, over the past 2700 years. Climate of the Past, 14, 193-214, https://doi.org/10.5194/cp-14-193-2018

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Publication Date: 2024-03-18

Description: High-resolution, well-dated climate archives provide an opportunity to investigate the dynamic interactions of climate patterns relevant for future projections. Here, we present data from a new, annually-dated ice core record from the eastern Ross Sea. Comparison of the Roosevelt Island Climate Evolution (RICE) ice core records with climate reanalysis data for the 1979-2012 calibration period shows that RICE records reliably capture temperature and snow precipitation variability of the region. RICE is compared with data from West Antarctica (West Antarctic Ice Sheet Divide Ice Core) and the western (Talos Dome) and eastern (Siple Dome) Ross Sea. For most of the past 2,700 years, the eastern Ross Sea was warming with perhaps increased snow accumulation and decreased sea ice extent. However, West Antarctica cooled whereas the western Ross Sea showed no significant temperature trend. From the 17th Century onwards, this relationship changes. All three regions now show signs of warming, with snow accumulation declining in West Antarctica and the eastern Ross Sea, but increasing in the western Ross Sea. Analysis of decadal to centennial-scale climate variability superimposed on the longer term trend reveal that periods characterised by opposing temperature trends between the Eastern and Western Ross Sea have occurred since the 3rd Century but are masked by longer-term trends. This pattern here is referred to as the Ross Sea Dipole, caused by a sensitive response of the region to dynamic interactions of the Southern Annual Mode and tropical forcings.

Keywords: AGE; Age, maximum/old; Age, minimum/young; DEPTH, ice/snow; ICEDRILL; Ice drill; Isotope ratio mass spectrometry; RICE; Roosevelt Island, Antarctica; δ Deuterium

Type: Dataset

Format: text/tab-separated-values, 8136 data points

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Snow permittivity measured during the MOSAiC expedition (2022)

Macfarlane, Amy R ; Schneebeli, Martin ; Dadic, Ruzica ; [et al.]

PANGAEA

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Publication Date: 2024-04-20

Description: Dielectric permittivity (ε′) and dielectric loss (ε″) measurements were made of discrete snow layers and at fixed vertical intervals. Measurements were made using the Stevens Water Monitoring Systems Hydra Probe (a.k.a. hydraprobe). The hydraprobe uses a tine assembly consisting of a central waveguide and three outer rods, each 4.5 cm in length and 3 mm wide, to measure the impedance of the sample at 50 MHz over a cylindrical area of 5.7 cm in length by 3 cm in diameter. The sensor was calibrated using isopropyl alcohol for ε' (±0.6 %) and a saline solution of known conductivity for ε'' (±0.7 %). Samples were obtained by horizontally inserting the probe tines into the snow, at a given layer/interval (every 3cm), to their maximum depth and collecting a response. 0 cm is the snow-ice interface. For related temperature and density measurements see https://doi.pangaea.de/10.1594/PANGAEA.940200 and https://doi.pangaea.de/10.1594/PANGAEA.940214 in this bundled dataset. Please direct inquiries to; Aikaterini Tavri (PS122/4), Ruzica Dadic (PS122/5).

Keywords: air temperature; Arctic Ocean; Arctic Research Icebreaker Consortium: A strategy for meeting the needs for marine-based research in the Arctic; ARICE; MOSAiC; MOSAiC20192020; Multidisciplinary drifting Observatory for the Study of Arctic Climate; Polarstern; PS122/4; PS122/4_44-249; PS122/4_45-176; PS122/4_45-177; PS122/4_45-179; PS122/4_45-180; PS122/4_45-181; PS122/4_45-182; PS122/4_45-63; PS122/4_46-105; PS122/4_46-107; PS122/4_46-110; PS122/4_46-135; PS122/4_46-187; PS122/4_46-188; PS122/4_46-190; PS122/4_46-191; PS122/4_46-192; PS122/4_46-288; PS122/4_46-31; PS122/4_47-178; PS122/4_47-179; PS122/4_47-97; PS122/4_48-177; PS122/4_48-186; PS122/4_48-187; PS122/4_48-188; PS122/4_48-189; PS122/4_48-190; PS122/4_48-191; PS122/4_48-196; PS122/4_48-45; PS122/4_49-19; PS122/4_49-20; PS122/4_49-47; PS122/4_99-56; PS122/4_99-57; PS122/4_99-58; PS122/4_99-59; PS122/4_99-60; PS122/4_99-61; PS122/4_99-62; PS122/4_99-63; PS122/4_99-65; PS122/4_99-66; PS122/4_99-67; PS122/4_99-68; PS122/4_99-69; PS122/4_99-70; PS122/4_99-71; PS122/4_99-72; PS122/4_99-73; PS122/5; PS122/5_59-292; PS122/5_59-313; PS122/5_59-350; PS122/5_59-352; PS122/5_60-128; PS122/5_60-168; PS122/5_60-2; PS122/5_60-24; PS122/5_60-26; PS122/5_60-43; PS122/5_60-74; PS122/5_60-75; PS122/5_60-77; PS122/5_60-78; PS122/5_61-132; PS122/5_61-139; PS122/5_61-162; PS122/5_61-167; PS122/5_61-198; PS122/5_61-2; PS122/5_61-236; PS122/5_61-25; PS122/5_61-4; PS122/5_61-97; PS122/5_62-10; PS122/5_62-101; PS122/5_62-124; PS122/5_62-126; PS122/5_62-140; PS122/5_62-146; PS122/5_62-25; PS122/5_62-27; PS122/5_62-39; PS122/5_62-44; PS122/5_62-69; PS122/5_62-89; PS122/5_63-262; PS122/5_63-96; PS122/5_63-97; PS122/5_63-99; snow height; SNOWPIT; Snow pit

Type: Dataset

Format: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet, 38.5 kBytes

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