Zobrazeno 1 - 10
of 231
pro vyhledávání: '"Julienne Stroeve"'
Autor:
Julienne Stroeve, Alex Crawford, Steve Ferguson, Ian Stirling, Louise Archer, Geoffrey York, David Babb, Robbie Mallett
Publikováno v:
Communications Earth & Environment, Vol 5, Iss 1, Pp 1-12 (2024)
Abstract Hudson Bay has warmed over 1 °C in the last 30 years. Coincident with this warming, seasonal patterns have shifted, with the spring sea ice melting earlier and the fall freeze-up occurring later, leading to a month longer of ice-free condit
Externí odkaz:
https://doaj.org/article/54508b5a8f294a9fa5b552705fa67c78
Publikováno v:
Geophysical Research Letters, Vol 51, Iss 21, Pp n/a-n/a (2024)
Abstract Satellite radar altimeters like CryoSat‐2 estimate sea ice thickness by measuring the return‐time of transmitted radar pulses, reflected from the sea ice and ocean surface, to measure the radar freeboard. Converting freeboard to thicknes
Externí odkaz:
https://doaj.org/article/75cdc7bd05644070b45852621cf8cc3d
Autor:
Kiran Yendamuri, Julienne Stroeve, Jens K. Ehn, William J. Williams, Vishnu Nandan, Brent G.T. Else, Alexander S. Komarov, Christina A. Braybrook, Mike Dempsey, C.J. Mundy
Publikováno v:
Arctic Science (2024)
Thinning sea ice cover and earlier melt in the Arctic impact primary producer (PP) phenology, causing earlier ice algal bloom termination and phytoplankton bloom commencement. However, logistic constraints limit capturing the complete seasonal evolut
Externí odkaz:
https://doaj.org/article/c86b19402f3342bbb2c2150ff043781b
Publikováno v:
Earth's Future, Vol 11, Iss 6, Pp n/a-n/a (2023)
Abstract Solar geoengineering refers to proposals, including stratospheric aerosol injection (SAI), to slow or reverse climate change by reflecting away incoming sunlight. The rapid changes ongoing in the Arctic and Antarctic, and the risk of exceedi
Externí odkaz:
https://doaj.org/article/bd2064bf6f6b42bf890631e38ad5d481
Autor:
Carmen Nab, Robbie Mallett, William Gregory, Jack Landy, Isobel Lawrence, Rosemary Willatt, Julienne Stroeve, Michel Tsamados
Publikováno v:
Geophysical Research Letters, Vol 50, Iss 2, Pp n/a-n/a (2023)
Abstract Satellite observations of sea ice freeboard are integral to the estimation of sea ice thickness. It is commonly assumed that radar pulses from satellite‐mounted Ku‐band altimeters penetrate through the snow and reflect from the snow‐ic
Externí odkaz:
https://doaj.org/article/46001f2b02c34afdb2a24d7876aa3382
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-12 (2021)
The Arctic warms faster than other areas of the planet, which also influences precipitation. Here, the authors show that the latest CMIP6 model ensemble shows a faster Arctic warming and sea-ice loss, causing an earlier transition from a snow- to a r
Externí odkaz:
https://doaj.org/article/ded62f94ff754972b9c065f310dbb474
Autor:
Vishnu Nandan, Randall K. Scharien, Torsten Geldsetzer, Ronald Kwok, John J. Yackel, Mallik S. Mahmud, Anja Rosel, Rasmus Tonboe, Mats Granskog, Rosemary Willatt, Julienne Stroeve, Daiki Nomura, Markus Frey
Publikováno v:
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 13, Pp 1082-1096 (2020)
Uncertainty in snow properties impacts the accuracy of Arctic sea ice thickness estimates from radar altimetry. On first-year sea ice (FYI), spatiotemporal variations in snow properties can cause the Ku-band main radar scattering horizon to appear ab
Externí odkaz:
https://doaj.org/article/2c58f21b75f44d97a9078ca694e7bedb
Publikováno v:
Remote Sensing, Vol 14, Iss 24, p 6249 (2022)
Sea-ice surface roughness (SIR) is a crucial parameter in climate and oceanographic studies, constraining momentum transfer between the atmosphere and ocean, providing preconditioning for summer-melt pond extent, and being related to ice age and thic
Externí odkaz:
https://doaj.org/article/3992119ccd614886bfd7cefd71f56671
Autor:
Julienne Stroeve, Martin Vancoppenolle, Gaelle Veyssiere, Marion Lebrun, Giulia Castellani, Marcel Babin, Michael Karcher, Jack Landy, Glen E. Liston, Jeremy Wilkinson
Publikováno v:
Frontiers in Marine Science, Vol 7 (2021)
Arctic sea ice is shifting from a year-round to a seasonal sea ice cover. This substantial transformation, via a reduction in Arctic sea ice extent and a thinning of its thickness, influences the amount of light entering the upper ocean. This in turn
Externí odkaz:
https://doaj.org/article/f3bef411a5184584b4029967e1a5e81d
Publikováno v:
Earth and Space Science, Vol 7, Iss 10, Pp n/a-n/a (2020)
Abstract This study introduces a Bayesian logistic regression framework that is capable of providing skillful probabilistic forecasts of Arctic sea ice cover, along with quantifying the attendant uncertainties. The presence or absence of ice (absence
Externí odkaz:
https://doaj.org/article/2394f5247df74772ab11b5f3c1f21f2e