English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

High-resolution MODIS thermal infrared satellite data are used to inferspatial and temporal characteristics of 17 prominent coastal polynya regionsover the entire Arctic basin. Thin-ice thickness (TIT) distributions (≤ 20 cm) are calculated from MODIS ice-surface temperatures, combinedwith ECMWF ERA-Interim atmospheric reanalysis data in an energy balance modelfor 13 winter seasons (2002/2003 to 2014/2015; November to March). From allavailable MODIS swath data, daily thin-ice thickness composites arecomputed in order to derive quantities such as polynya area and totalthermodynamic (i.e., potential) ice production. A gap-filling approach isapplied to account for cloud and data gaps in the MODIS composites. Allpolynya regions combined cover an average thin-ice area of 226.6 ± 36.1 × 103 km2 in winter. This allows for an average total winter-accumulated ice production of about 1811 ± 293 km3, whereby theKara Sea region, the North Water polynya (both 15 %), polynyas on thewestern side of Novaya Zemlya (20 %), as well as scattered smaller polynyasin the Canadian Arctic Archipelago (all combined 12 %) are the maincontributors. Other well-known sites of polynya formation (Laptev Sea,Chukchi Sea) show smaller contributions and range between 2 and 5 %. Wenotice distinct differences to earlier studies on pan-Arctic polynyacharacteristics, originating in some part from the use of high-resolutionMODIS data, as the capability to resolve small-scale (> 2 km) polynyas andalso large leads are increased. Despite the short record of 13 winter seasons,positive trends in ice production are detected for several regions of theeastern Arctic (most significantly in the Laptev Sea region with an increase of6.8 km3 yr−1) and the North Water polynya, while otherpolynyas in the western Arctic show a more pronounced variability withvarying trends. We emphasize the role of the Laptev Sea polynyas as being amajor influence on Transpolar Drift characteristics through a distinctrelation between increasing ice production and ice area export. Overall, ourstudy presents a spatially highly accurate characterization of circumpolarpolynya dynamics and ice production, which should be valuable for futuremodeling efforts of atmosphere–ice–ocean interactions in the Arctic

the cryosphere

Circumpolar polynya regions and ice production in the Arctic: results from MODIS thermal infrared imagery from 2002/2003 to 2014/2015 with a regional focus on the Laptev Sea