Polynyas occurrence time
WebOct 4, 2024 · At most times, the areas of the different polynyas had synchronous variations, implying that the main driving factors of the opening of the four polynyas were the same. An obvious exception emerged after mid-September 2008, when the BaP remained closed while the other three polynyas reopened normally, after a long period of decline from mid … WebTranslations in context of "upwellings of nutrients" in English-French from Reverso Context: Forage is closely linked to upwellings of nutrients in currents and therefore may not be drastically affected by changes to sea ice cover.
Polynyas occurrence time
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WebApr 9, 2024 · 2024), the opening/closing of polynyas (sites of open water enclosed by sea ice), and sea-ice cover stability (and therefore its suitability as support, eg for breeding). We found negative relationships between species acoustic presence probabilities and sea-ice drift velocity, except for leopard seal, for which there was a strong positive trend, and no … WebMay 2, 2024 · The occurrence time in that season was considerably longer than the occurrence times in other seasons and was two times longer than the mean occurrence time of approximately 61 days. On a long time …
WebMay 22, 2007 · Description. Polynyas are relatively ice-free regions when compared to the areas around them, and have been suggested as being foci for energy transfer between the atmosphere and ocean, ice “factories”, and critical areas with respect to polar ecosystems and biogeochemical cycles. This volume presents an integrated, multidisciplinary review ... WebOct 2, 2024 · regions at times and under climatic conditions where one would expect the water to be ice covered. There are generally considered to be two types of polynyas (Smith et al., 1990): latent heat polynyas (also referred to as mechanically gener-ated or wind-driven polynyas) and sensible heat polynyas.
WebSep 27, 2024 · Arctic and Antarctic polynyas are crucial sites for deep-water formation, which helps sustain global ocean circulation. During glacial times, the occurrence of … WebFeb 1, 2024 · The strong stratification of the Ross Sea and the contraction of the Ross gyre due to the southward shift of Antarctic Circumpolar Current fronts provide unfavorable conditions for the Ross Sea open-ocean polynya. The recovery time of deep ocean heat controls the occurrence frequency of the Weddell Sea open-ocean polynya.
Webarea/extent and occurrence. In this study, the SIPs of RISP and McMurdo Sound polynya (MSP) from 1 March–30 November 2024 and 2024 are calculated based on Sentinel-1 SAR data (for area/extent) and AMSR2 data (for ice thickness). The results show that the wind-driven polynyas in these two
Coastal polynyas are formed through two main processes: A sensible heat polynya is thermodynamically driven, and typically occurs when warm water upwelling keeps the surface water temperature at or above the freezing point. This reduces ice production and may stop it altogether.A latent heat polynya is … See more A polynya is an area of open water surrounded by sea ice. It is now used as a geographical term for an area of unfrozen seawater within otherwise contiguous pack ice or fast ice. It is a loanword from the Russian полынья … See more Polynyas have also supported human populations throughout history. For example, the North Water Polynya, the largest and most biologically productive Arctic polynya, serves as a critical source of food in an otherwise barren region, enabling the … See more • Lead (sea ice) • North Water Polynya • Weddell Polynya See more Some polynyas, such as the North Water Polynya between Canada and Greenland, occur seasonally at the same time and place each year. Because animals can adapt their life strategies to this regularity, these types of polynyas are of special ecological research … See more When submarines of the U.S. Navy made expeditions to the North Pole in the 1950s and 1960s, there was significant concern about surfacing through the thick pack ice of the Arctic Ocean. … See more • Polar cyclones at the origin of the reoccurrence of the Maud Rise Polynya in austral winter 2024 (NOW) at agupubs.onlinelibrary.wiley.com (Error: unknown archive … See more irish setter breckenridge wax cotton jacketWebJun 1, 2001 · Explanations for the occurrence of the Weddell Polynya are varied, ranging from considerations of the modifications of the lower atmospheric wind field (5–7), to ocean surface preconditioning (8, 9), to Taylor cap formation (10,11).Previous studies, however, do not confidently explain the mechanism that leads to polynya formation. irish setter border collie mixWebPolynyas are large, ... This maximum width cannot be attained mathematically within a finite time period, and it is commonly assumed that 95% open water in the polynya is sufficient. … irish setter boots ravineWebSea ice the frozen seawater that floats on the ocean surface. Computers forms stylish both the Arctic and the Antarctic in each hemisphere’s winter; it retreat in the summer, but does not total disappear. port clinton high school swimmingWebSynonyms for OCCURRENCE: event, incident, circumstance, thing, happening, episode, occasion, accident, phenomenon, affair irish setter breeder wvirish setter breed characteristicsWebSep 7, 2024 · Abstract. Polynyas facilitate air–sea fluxes, impacting climate-relevant properties such as sea ice formation and deep water production. Despite their … port clinton hospital ohio