2 edition of On the observation of sea ice distribution with the sea ice radar (preliminary report) found in the catalog.
On the observation of sea ice distribution with the sea ice radar (preliminary report)
by Defence Scientific Information Service, DRB Canada in [Ottawa]
Written in English
|Statement||Tadashi Tabata, Masaaki Aota, and Masayuki Ōl ; translated by E.R. Hope.|
|Contributions||Aota, Masaaki, Ōl, Masayuki|
|LC Classifications||GB2403.2 T3213|
|The Physical Object|
|Pagination||4 p.,  leaves of plates :|
Observation of sea ice surface thermal states under cloud cover S.V. Nghiem l, From laboratory experiments, we show that C-band radar (transparent to clouds) backscatter is very sensitive to the surface temperature of first-year sea ice. which determines the thermodynamic distribution of brine volume in the sea ice surface layer. The. Sea Ice Image Processing with MATLAB® (Signal and Image Processing of Earth Observations) - Kindle edition by Zhang, Qin, Skjetne, Roger. Download it once and read it on your Kindle device, PC, phones or tablets. Use features like bookmarks, note taking and highlighting while reading Sea Ice Image Processing with MATLAB® (Signal and Image Processing of Earth Observations).Manufacturer: CRC Press.
Sea ice thickness from radar altimetry depends on vertical location of radar return Ranging biases over snow impact sea ice thickness by approx. factor 10 Penetration depth for Ku-Band usually > snow depth, but snow backscatter may still be. The sea-ice model in HadGEM1 resolves the sub-gridscale ice thickness distribution by dividing the ice pack into five thickness categories and one open water category (leads). The ice velocities are calculated using the Elastic-Viscous-Plastic dynamics (EVP) of Hunke and Dukowicz () and the amount of ice ridging is computed using.
With On Sea Ice, geophysicist W. F. Weeks delivers a natural history of sea ice, a fully comprehensive and up-to-date account of our knowledge of its creation, change, and function. The volume begins with the earliest recorded observations of sea ice, from BC, but the majority of its information is drawn from the period after , when Reviews: 3. The world is watching. The loss of Arctic sea ice signals the warming that has been stronger in the Arctic than anywhere else on Earth. At the end of summer , sea ice had shrunk to half its former extent compared to the average from to , more than a million square miles less.
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New under-ice net used in large-scale study on the prevalence of polar cod at the ice underside. Using a new net, marine biologists from the Alfred Wegener Institute have, for the first time, been able to catch polar cod directly beneath the Arctic sea ice with a trawl, allowing them to determine their large-scale distribution and origin.
Over the past 20 years the study of the frozen Arctic and Southern Oceans and sub-arctic seas has progressed at a remarkable pace. This third edition of Sea Ice gives insight into the very latest understanding of the how sea ice is formed, how we measure (and model) its extent, the biology that lives within and associated with sea ice and the effect of climate change on its distribution.
Antarctic sea-ice is highly variable in space and time. In winter, it can extend to encompass an area touching 18 million sq km - more than the.
The Arctic sea ice cover evolves dramatically through the summer melt season. Floe size distribution (FSD) is a critical parameter used to examine this change as the ice cover transitions from large rectilinear plates in spring to an ensemble of discrete rounded floes by by: The forcing from waves and wind can alter the sea ice morphology and resulting floe size distribution in sea ice.
This forcing and the resulting impact on sea ice is expected to be altered by the thinning sea ice cover along with the presence of increasing open water and resultant changing ocean sea state currently found in the present day Arctic : B.
Holt, H. Shen, V. Squire. Sea Ice Outlook Report. A synthesis of scientific sea ice extent projections during Arctic summer, updated monthly during melt season. Sea Ice Prediction Network. A collaborative network of scientists and stakeholders to advance research on sea ice prediction and communicate sea ice.
1. Introduction. Satellite passive microwave observations of Arctic sea ice have recorded a decline in the summer extent of ∼40% since (Cavalieri et al.,updated yearly; Fetterer et al.,updated daily).The decline is coincident with abrupt global and Arctic warming over the last 30 years (Hartmann et al., ).It is crucial to observe and understand changes in the Arctic.
The sea ice cover reached a minimum summer extent of million km 2 on 18 September This was tied with and as the 2nd lowest extent of the satellite record and was million km 2 (33%) less than the average minimum ice extent. The September ice extent has not returned to pre levels; the 13 lowest extents in the satellite record having all occurred in the.
Satellite-borne synthetic aperture radar (SAR) data are highly valuable not only for observing the open ocean but also for monitoring seasonally or permanently ice-covered ocean regions in the Arctic, Antarctic, and other areas such as the Baltic Sea, the Bohai Sea, or the Sea of Okhotsk.
Our ASIP is staffed 7 days a week from am to pm Operations Phone Line: Operations Email: @ The author presents in The Drift of Sea Ice the fundamental laws of sea ice drift which come from the material properties of sea ice and the basic laws of mechanics.
The resulting system of equations is analysed for the general properties of sea ice drift, the free drift model and analytical models for ice drift in the presence of internal friction, and the construction of numerical ice drift.
Sea ice thickness estimates from Icebridge over the Weddell Sea in Jing Li, Hongjie Xie, Liuxi Tian, Stephen Ackley, Mestas-Nuñez Alberto. OS-5 The role of snow on sea ice for sea-ice parameter retrieval and variability. PIPERS: SAR backscatter parameters and co-located LiDAR scans in the Ross Sea.
The paper “Microwave Observations of Daily Antarctic Sea-Ice Edge Expansion and Contribution Rates” (IEEE Remote Sensing Letters, 54–58) states that “The distribution of the daily sea-ice advance/retreat from each sensor is similar and is approximately double exponential.”The proposed double exponential distribution has density function The standard deviation is.
Melt ponds on sea ice in the Canadian Archipelago 2. On the use of RADARSAT-1 synthetic aperture radar for geophysical inversion J. Yackel 1 and D. Barber Centre for Earth Observation Science, University of Manitoba, Winnipeg, Manitoba, Canada Abstract.
Microwave scattering from a first-year sea ice (FYI) melt ponded surface is. To start with, a new sea ice thickness product from satellite observation now describes the Arctic: A real-time sea ice thickness product is indeed released based on merged data from CRYOSAT-2 and SMOS and complements other real-time Arctic parameters such as sea ice concentration, edge, type, drift, charts, sea iceberg concentration, sea, and.
Snow can also contribute to ice growth after flooding and refreezing, leading to formation of snow ice (Granskog et al., ). As the melt season progresses, freshwater from snowmelt enables the formation of ponds on the sea ice.
Prior to the s, observations of snow on Arctic sea ice were limited to in situ measurements. Clouds interfere with the distribution of short-wave and long-wave radiations over sea ice, and thereby strongly affect the surface energy balance in polar.
Radar Altimetry Tutorial and Toolbox > 7. Missions > Past missions Past missions > EnviSat. Over the past 20 years the study of the frozen Arctic and Southern Oceans and sub-arctic seas has progressed at a remarkable pace. This third edition of Sea Ice gives insight into the very latest understanding of the how sea ice is formed, how we measure (and model) its extent, the biology that lives within and associated with sea ice and the effect of climate change on its distribution.
CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): Synthetic Aperture Radar (SAR) provides an amazingly detailed look at sea ice, but the level of detail is so great that it is not at first apparent how to utilize the data for improving sea ice data sets and models.
A solution to this conundrum is offered in the RADARSAT Geophysical Processor System (RGPS), which. Sea Ice Microstructure and Properties.
Studies of Microstructural Features and Brine Drainage Networks in First-Year Sea Ice The objective of this 3-year program is to address gaps in knowledge of the development and evolution of some important macro- and microstructural features of first year sea ice by repeated measurements through the annual cycle from freezing to melting.As a framework to integrate the observations, researchers also develop data assimilating ocean and ice sheet/sea-level models, which provide a comprehensive view of the state of the ocean and the ice.
This research is essential in understanding what the present day sea level rise rate is, which Earth system components contribute to it (and by.Continuous observation of sea ice using a small robotic aircraft called the Aerosonde was made over the Arctic Ocean from Barrow, Alaska, on 20–21 July Over a region located km off the coast of Barrow, images obtained from the aircraft were used to characterize the sea ice and to determine the fraction of melt ponds on both.