An application of a numerical sea ice model to the East Greenland area by W. B. Tucker

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Published by Naval Postgraduate School in Monterey, California .

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Open LibraryOL25526381M

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EastGreenland,modeling,icedrift,icegrowth 20 ABSTRACT (Camllfuoan fvm— tl^H naeaaa«vr •"*Hmmtltr»r W«e* maikarj Adynamic-thermodynamicsea ice modelwhichemploys a viscous-plasticconsti.

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An application of a numerical sea ice model to the East Greenland area. Item Preview remove-circle An application of a numerical sea ice model to the East Greenland area. by Tucker, W. Publication date Pages: Application of a numerical sea ice model to the East Greenland area.

[Hanover, N.H.]: U.S. Army Cold Regions Research and Engineering Laboratory, (OCoLC) Material Type: Government publication, National government publication: Document Type: Book: All Authors / Contributors: W B Tucker; Cold Regions Research and Engineering.

Get this from a library. Application of a numerical sea ice model to the east Greenland area. [W B Tucker; United States.

Office of Naval Research.; Cold Regions Research and. An application of a numerical sea ice model to the East Greenland area.

By W. Tucker Get PDF (6 MB)Author: W. Tucker. Arctic sea ice area, derived from satellite passive microwave sensor data, ± which occurs primarily through the Fram Strait via the East Greenland. The numerical model generated.

Numerical simulations are carried out for sea ice with four different advection schemes to study their effects on the simulation results. The sea ice model employed here is the Sea Ice Simulator. The Greenland Ice Sheet holds m of sea level equivalent and in recent decades, rising temperatures have led to accelerated mass loss.

Current ice margin recession is led by the retreat of outlet glaciers, large rivers of ice ending in narrow fjords that drain the interior.

We pair an outlet glacier–resolving ice sheet model with a comprehensive uncertainty quantification to estimate. A rough qualitative comparison of the biomarker-based estimate of sea ice coverage (Fig.

5a) with model results exhibits a comparable pattern of the sea ice distribution in the study area with maximum sea ice cover along the proximal shelf of East Greenland, reduced sea ice cover along the West Spitsbergen continental slope and ice free.

The Greenland Ice Sheet (GrIS) is the Northern Hemisphere’s largest terrestrial permanent ice- and snow-covered area and a reservoir of water, from a hydrological perspective (e.g., Box et al. ; Fettweis ; Richter-Menge et al. ; Mernild et al. d, a,b), containing between m and m global sea level equivalent (SLE) (Warrick and Oerlemans ; Gregory et al.

Greve R. Application of a polythermal three-dimensional ice sheet model to the Greenland ice sheet: response to steady-state and transient climate scenarios.

J Clim. ;10(5)– CrossRef Google Scholar. The East Antarctic ice sheet has played a fundamental part in modulating climate and sea level during the past 30 million years. Understanding its history is crucial to evaluating its future. The Greenland ice sheet is by far the largest orographic feature in the Arctic and is huge compared with other glaciers in the world, except Antarctica.

Greenland is 82% covered by a single ice sheet, × 10 6 km 2 in area. The ice sheet assumes the form of a dome rising to an elevation of m (Bamber et al. ; Fig. Highlights Using climate and ice sheet modelling we investigate mid-Pliocene ice sheets.

Mid-Pliocene warm period ice sheets are sensitive to imposed orbital forcing. The Greenland Ice Sheet is reduced under all Pliocene orbital configurations. The East Antarctic Ice Sheet can both grow and lose volume compared to modern. Global sea level response is dampened as the ice sheets in this study.

"Thus, I unconditionally recommend this book to the serious student of climate change as well as to the more experienced researcher involved in any aspect of sea ice research as a most valuable resource on the subject of sea ice and its role in the global system." (Polar Biol, ).

[1] We present three‐dimensional, high‐resolution simulations of ice melting at the calving face of Store Glacier, a tidewater glacier in West Greenland, using the Massachusetts Institute of Technology general circulation model. We compare the simulated ice melt with an estimate derived from oceanographic data.

The simulations show turbulent upwelling and spreading of the freshwater. The book is based on several decades of research related to sea ice in the Arctic and its variability, sea ice process studies as well as implications of the sea ice variability on human activities.

The chapters provide an extensive overview of the research results related to sea ice in the Arctic at paleo-scales to more resent scales of. Arctic sea ice is a critical component of the climate system, known to influence ocean circulation, earth’s albedo, and ocean–atmosphere heat and gas exchange.

Current developments in the use of IP25 (a sea ice proxy with 25 carbon atoms only synthesized by Arctic sea ice diatoms) have proven it to be a suitable proxy for paleo-sea ice reconstructions over hundreds of thousands to even.

2. Sea Ice Age Data and Methods [3] The data used here are a reprocessed and extended version of the – series of sea ice age introduced by Fowler et al. and described further by Maslanik et al., Tschudi et al., and Stroeve et al.

In brief, using satellite data and drifting buoys, it is possible to observe the formation, movement. The cold-core high steered more cold air to the area, reinforcing the sea-ice concentration anomaly east of Greenland.

The sea-ice surplus was carried southward by ocean currents around the tip of Greenland. South of 70°N, sea ice already started melting and the associated freshwater anomaly was carried to the Labrador Sea, shutting off deep.

Iceberg calving has been implicated in the retreat and acceleration of glaciers and ice shelves along the margins of the Greenland and Antarctic ice sheets 1,2,3,te projections of sea. Greenland Ice Sheet; laser altimetry; mass balance; ice dynamics; Comprehensive monitoring of the Greenland Ice Sheet (GrIS) by satellite observations has revealed increasing mass loss since the late s (1, 2), reaching ± 30 Gt⋅y −1 for the period – ().This translates to a sea level rise (SLR) of mm⋅y −1, about half of which is attributed to a decrease in Surface.

Abstract. The Northeast Greenland Ice Stream (NEGIS) extends around km upstream from the coast to its onset near the ice divide in interior Greenland.

Several maps of surface velocity and topography of interior Greenland exist, but their accuracy is not well constrained by in situ observations.

Here we present the results from a GPS mapping of surface velocity in an area located. Time series of anomalous ice production and melt in the red- and blue-banded areas in Fig. S2D where the anomalies peak, combined with a time series of anomalous sea-ice production in the rest of the Arctic, show no indication of enhanced sea-ice production in the Arctic before sea-ice production anomalies developed east of Greenland (Fig.

S2B). Ask them to specify if the ice is on land or at sea. (The Greenland and Antarctic ice sheets, along with smaller mountain glaciers, are considered land ice. The ice in the Arctic is frozen seawater and therefore considered sea ice.) Ask students which type of ice, if any, contributes more to sea-level rise.

Ask students to explain their thinking. he changing mass of the great ice sheets of Greenland and Antarctica represents the largest unknown in predictions of global sea-level rise over the coming decades.

At million km 2, up to 3 km thick, and a little smaller than Mexico, the Greenland Ice Sheet would raise global sea level by about 7. Relationship between observed Arctic sea ice area (y-axis) and total anthropogenic CO 2 emissions (x-axis) for each month of the year for the period until The numbers in each subpanel denote the loss of sea ice area per ton of CO 2 emissions and the R 2 value of the linear fit.

Sea ice retreat in the first half of August was mainly in an area of patchy sea ice in the East Siberian Sea and along the ice edge in the northern Beaufort and Chukchi Seas. The Northern Sea Route appears to be open in our satellite-based mapping, but ice may remain in some areas.

The Northwest Passage is still closed. A DOE Coupled Parallel Climate Model (PCM) With High Resolution Ocean and Sea Ice: An Update. March Warren M. Washington 1 *, John W. Weatherly 2, Albert J. Semtner, Jr. Thomas W. Bettge 1, Anthony P. Craig 1, Warren G. Strand 1, Vincent B.

Wayland 1. Rodney James 1, Gerald A. Meehl 1, Marcia Branstetter 4, and Yuxia Zhang 3. 1 National Center for Atmospheric Research (NCAR). Area takes the percentages of sea ice within data cells and adds them up to report how much of the Arctic is covered by ice; area typically uses a threshold of 15%.

So in the same example, with three 25 km x 25 km (16 miles x 16 miles) grid cells of 16% ice, 2% ice, and 90% ice, multiply the grid cell areas that are over the 15% threshold by. Abstract. Changes in ocean temperature and salinity are expected to be an important determinant of the Greenland ice sheet's future sea level contribution.

Yet, simulating the impact of these changes in continental-scale ice sheet models remains challenging due to the small scale of key physics, such as fjord circulation and plume dynamics, and poor understanding of critical processes, such as.

The area of arctic sea ice is furthermore observed to have decreased ∼8 × 10 5 km 2 (%) in the past quarter century, with record‐low summer ice coverage in September A set of model predictions is used to quantify changes in the ice cover through the twenty‐first century, with greater reductions expected in summer than winter.

Controls on the early Holocene collapse of the Bothnian Sea Ice Stream. Journal of Geophysical Research: Earth Surface, Vol.Issue. 12, p. Propagation of long fractures in the Ronne Ice Shelf, Antarctica, investigated using a numerical model of fracture propagation.

North and north-east Greenland ice discharge from. Calibrating a glaciological model of the Greenland ice sheet from the Last Glacial Maximum to present-day using field observations of relative sea level and ice extent.

Quaternary Science Revi –. The new model accurately predicted the area covered by sea ice in the Barents and Greenland-Iceland-Norwegian seas and in the Labrador Sea up to 11 months in advance.

Comprehensive monitoring of the Greenland Ice Sheet (GrIS) by satellite observations has revealed increasing mass loss since the late s (1, 2), reaching ± 30 Gt⋅y −1 for the period – ().This translates to a sea level rise (SLR) of mm⋅y −1, about half of which is attributed to a decrease in Surface Mass Balance (SMB) that is expected to continue throughout this.

Abstract. Sea-level rise associated with changing climate is expected to pose a major challenge for societies. Based on the efforts of COP21 to limit global warming to ∘ C or even ∘ C by the end of the 21st century (Paris Agreement), we simulate the future contribution of the Greenland ice sheet (GrIS) to sea-level change under the low emission Representative Concentration Pathway.

Parameterization. Call the setmask function with empty arguments, to denote that all ice is grounded. Then parameterize your mesh with fileset your flow equation to SSA for all. Read through the parameter file./, which is similar to your file, but forwe are parameterizing a full continental domain, so all points along the domain.

The Odden ice tongue in the Greenland Sea is an area where so-called pancake ice is the most common type of ice. Odden means headland in Norwegian. During the winter, it grows eastward from the East Greenland ice edge around 72°N to 74°N.

The Jan Mayen Current brings some very cold polar surface water, which it takes from the East Greenland. Modelling the sea ice thickness distribution in the Greenland Sea: Joseph Kah-Wah: Lam: Numerical modelling of the dynamics response of glaciers to changing climates: William Dingle: Miners: Electromagnetic reflections inside ice sheets: Matthias Heinrich: Reisemann: Ultrasonic transmission properties of sea ice:.

Icepack, a new modular software package, represents crucial sea ice processes including thermodynamics, ridging, biogeochemistry, and associated area and thickness changes. The software can be ported easily to a wide variety of models for sea ice prediction and earth system simulation.Animation of the average yearly change in global land ice mass during from all of the world's glaciers and ice caps (excluding Greenland and Antarctica).

Global mass balance from GRACE NASA is studying the Earth's ice and water to better understand how sea level rise might affect us all.bounds the CPR standard area B6, from which taxonomy data were obtained for evaluation. are tightly coupled to atmospheric CO2 uptake and surface ocean pCO2 variability (Corbiere et al., ), and therefore a major component of the carbon cycle.

2 Model description Ice-ocean model (GPOMZ) Physical forcing for the 1-D ecosystem/carbon model.

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