Sentences with phrase «global sea ice cover»

Comiso, J.C., 2003: Large scale characteristics and variability of the global sea ice cover.

Not exact matches

This year's Arctic sea ice cover currently is the sixth - lowest on modern record, a ranking that raises ongoing concerns about the speed of ice melt and the effects of ice loss on global weather patterns, geopolitical fights, indigenous peoples and wildlife, scientists said yesterday.

Sea ice and snow cover loss create a feedback look that can accelerate global warming; with fewer reflective surfaces on the planet, more sunlight can thereby be absorbed, driving surface temperatures even higher, the scientists explained.

One of the last major unexplored geological features on Earth, the ridge has slowly lost the ice sheet covering it thanks to global warming, opening the sea to exploration — and offshore mining and drilling.

Since the Artics» sea - ice cover is shrinking due to global warming, the polar region takes up more heat.

If proxy data can confirm that sea ice was indeed the major player in past abrupt climate - change events, it seems less likely that such dramatic abrupt changes will occur due to global warming, when extensive sea - ice cover will not be present.

The second error is obvious from the fact that the recent warming is seen in the oceans, the atmosphere, in Arctic sea ice retreat, in glacier recession, earlier springs, reduced snow cover etc., so even if all met stations were contaminated (which they aren't), global warming would still be «unequivocal».

Previously, Kelly was a Postdoctoral Fellow and Research Associate at the University of Washington and the University of Victoria in British Columbia, Canada where she studied the role of the changing Arctic sea ice cover on global circulation, weather, and climate using a hierarchy of numerical global climate models.

Items covered How the climate is changing with time laps charts showing the changes in Sea ice melting Ice sheet melting Carbon dioxide in the atmosphere Global temperature change Students will also explore a future technology on how to reduce the human impact on the environmeice melting Ice sheet melting Carbon dioxide in the atmosphere Global temperature change Students will also explore a future technology on how to reduce the human impact on the environmeIce sheet melting Carbon dioxide in the atmosphere Global temperature change Students will also explore a future technology on how to reduce the human impact on the environment.

If proxy data can confirm that sea ice was indeed the major player in past abrupt climate - change events, it seems less likely that such dramatic abrupt changes will occur due to global warming, when extensive sea - ice cover will not be present.

While methane is short - lived, all it has to do is shift the global energy balance for a while, to trigger irreversible loss of tundra methane, loss of Arctic sea ice cover and more calthrate loss, then loss of ice sheets and everything else Hansen et al promise.

The second error is obvious from the fact that the recent warming is seen in the oceans, the atmosphere, in Arctic sea ice retreat, in glacier recession, earlier springs, reduced snow cover etc., so even if all met stations were contaminated (which they aren't), global warming would still be «unequivocal».

However, I've never seen a single media article in any U.S. press outlet that covered these issues — the large - scale evidence for global warming (melting glaciers, warming poles, shrinking sea ice, ocean temperatures) to the local scale (more intense hurricanes, more intense precipitation, more frequent droughts and heat waves) while also discussing the real causes (fossil fuels and deforestation) and the real solutions (replacement of fossil fuels with renewables, limiting deforestation, and halting the use of fossil fuels, especially coal and oil.)

Some people say the Snowball did cause global sea icecover, and essentially global land ice cover.

There are several things that are well proven and simple to understand — for example, global termperature increase, sea level rise, polar ice cover, glacier retreat, and snow cover.

That was due to increased global moisture content, decreased global average cloud cover and decreased sea ice extent at high latitudes.

Re 9 wili — I know of a paper suggesting, as I recall, that enhanced «backradiation» (downward radiation reaching the surface emitted by the air / clouds) contributed more to Arctic amplification specifically in the cold part of the year (just to be clear, backradiation should generally increase with any warming (aside from greenhouse feedbacks) and more so with a warming due to an increase in the greenhouse effect (including feedbacks like water vapor and, if positive, clouds, though regional changes in water vapor and clouds can go against the global trend); otherwise it was always my understanding that the albedo feedback was key (while sea ice decreases so far have been more a summer phenomenon (when it would be warmer to begin with), the heat capacity of the sea prevents much temperature response, but there is a greater build up of heat from the albedo feedback, and this is released in the cold part of the year when ice forms later or would have formed or would have been thicker; the seasonal effect of reduced winter snow cover decreasing at those latitudes which still recieve sunlight in the winter would not be so delayed).

This would certainly explain why arctic sea ice cover has been absolutely crashing in recent years while the HARDCRU / GISS global average temps had been increasing more modestly.

The influence of anthropogenic forcing has also been detected in various physical systems over the last 50 years, including increases in global oceanic heat content, increases in sea level, shrinking of alpine glaciers, reductions in Arctic sea ice extent, and reductions in spring snow cover (Hegerl et al., 2007).

If all of the currently attainable carbon resources [estimated to be between 8500 and 13.600 GtC (4)-RSB- were burned, the Antarctic Ice Sheet would lose most of its mass, raising global sea level by more than 50 m. For the 125 GtC as well as the 500, 800, 2500, and 5000 GtC scenarios, the ice - covered area is depicted in white (ice - free bedrock in browIce Sheet would lose most of its mass, raising global sea level by more than 50 m. For the 125 GtC as well as the 500, 800, 2500, and 5000 GtC scenarios, the ice - covered area is depicted in white (ice - free bedrock in browice - covered area is depicted in white (ice - free bedrock in browice - free bedrock in brown).

Using a global climate model coupled with an ocean and a sea - ice model, we compare the effects of doubling CO2 and halving CO2 on sea - ice cover and connections with the atmosphere and ocean.

Besides these thousands of thermometer readings from weather stations around the world, there are many other clear indicators of global warming such as rising ocean temperatures, sea level, and atmospheric humidity, and declining snow cover, glacier mass, and sea ice.

The aim of the C - SIDE working group is to reconstruct changes in sea - ice extent in the Southern Ocean for the past 130,000 years, reconstruct how sea - ice cover responded to global cooling as the Earth entered a glacial cycle, and to better understand how sea - ice cover may have influenced nutrient cycling, ocean productivity, air - sea gas exchange, and circulation dynamics.

Translated by Google from this press release in German at the Alfred Wegener Institute in Germany: Never so much sea ice at Antarctica in the last 30 years In light of global warming, it seems paradoxical that the sea ice cover of the Southern Ocean has covered a larger area in the past month than...

Whether it's a killer winter in South America, increased snow cover globally, record Arctic sea ice recovery, recovering glaciers in the Alps, record high sea ice extent in Antarctica, extreme cold in southeast Europe, or 5 consecutive colder than normal European winters, just to name a few, the ominous signs of global cooling are compounding rapidly.

«In light of the above findings, it appears that sea ice cover in the Bohai Sea is not quite as sensitive to CO2 - induced global warming as climate model projections / theory suggest it should sea ice cover in the Bohai Sea is not quite as sensitive to CO2 - induced global warming as climate model projections / theory suggest it should Sea is not quite as sensitive to CO2 - induced global warming as climate model projections / theory suggest it should be.

Global sea ice set a clear record low in the first half of 2017, driven in large part by record low Antarctic sea ice cover.

Furthermore, the Arctic has warmed more than twice as fast as the global average, a phenomenon known as Arctic amplification, and stimulated by the combined increasing Arctic temperatures and rapid loss of sea ice in all seasons along with declining snow cover in the spring and early summer.

According to AMEG, here's how climate change in the Arctic has changed weather patterns: Over the past three decades, snow cover has been reduced by 17 - 18 % per decade and sea ice is declining fast because of human - induced global warming.

The evidence for rapid climate change is compelling: Sea level rise, Global temperature rise, Warming oceans, Shrinking ice sheets, Declining Arctic sea ice, Glacial retreat, Extreme events, Ocean acidification, Decreased snow cover http://climate.nasa.gov/evidence/ It's changing «rapidly&raquSea level rise, Global temperature rise, Warming oceans, Shrinking ice sheets, Declining Arctic sea ice, Glacial retreat, Extreme events, Ocean acidification, Decreased snow cover http://climate.nasa.gov/evidence/ It's changing «rapidly&raqusea ice, Glacial retreat, Extreme events, Ocean acidification, Decreased snow cover http://climate.nasa.gov/evidence/ It's changing «rapidly».

Including open - water phytoplankton biomarkers as well as micropaleontological data, we demonstrate (1) that a permanent sea ice cover existed during MIS 6 and (2) that during the LIG sea ice was still present in the central Arctic Ocean during the spring / summer season even under (global) boundary conditions significantly warmer than the present.

For more on the terrestrial foods topic, see my detailed discussion in this previous post, and this recent (March 30) ScienceNews report on yet another, largely anecdotal «polar bears resort to bird eggs because of declining sea ice» story (see photo below, based on a new paper by Prop and colleagues), which was also covered March 31 at the DailyMail («Polar bears are forced to raid seabird nests as Arctic sea ice melts — eating more than 200 eggs in two hours,» with lots of hand - wringing and sea ice hype but little mention of the fact that there are many more bears now than there were in the early 1970s around Svalbard or that the variable, cyclical, AMO (not global warming) has had the largest impact on sea ice conditions in the Barents Sesea ice» story (see photo below, based on a new paper by Prop and colleagues), which was also covered March 31 at the DailyMail («Polar bears are forced to raid seabird nests as Arctic sea ice melts — eating more than 200 eggs in two hours,» with lots of hand - wringing and sea ice hype but little mention of the fact that there are many more bears now than there were in the early 1970s around Svalbard or that the variable, cyclical, AMO (not global warming) has had the largest impact on sea ice conditions in the Barents Sesea ice melts — eating more than 200 eggs in two hours,» with lots of hand - wringing and sea ice hype but little mention of the fact that there are many more bears now than there were in the early 1970s around Svalbard or that the variable, cyclical, AMO (not global warming) has had the largest impact on sea ice conditions in the Barents Sesea ice hype but little mention of the fact that there are many more bears now than there were in the early 1970s around Svalbard or that the variable, cyclical, AMO (not global warming) has had the largest impact on sea ice conditions in the Barents Sesea ice conditions in the Barents SeaSea).

Global sea level has risen, and there have been large reductions in snow - cover extent, glaciers, and sea ice.

The winds within that ice zone keep the water extremely cold, enabling the sea ice cover to grow in recent years even as global temperatures have risen markedly.

Normally you can run GCM for centuries with a stable realistic surface temperature, but take the CO2 out, and in 5 - 10 years it has dropped 30 C in global average temperature and is half - covered in sea ice due to a powerful water vapor feedback in response to any global temperature change.

Some components of global OSR (reflection from sea ice and seasonal snow cover) lag behind changes in Ts.

For example, the dramatic decline of summer sea ice in the Arctic — a loss of ice cover roughly equal to half the area of the continental United States — exacerbates global warming by reducing the reflectivity of Earth's surface and increasing the amount of heat absorbed.

«Arctic Ice in «Death Spiral» with additional heating due to global warming, the extent of sea ice cover has gotten smaller and smaller over the summers since the 198Ice in «Death Spiral» with additional heating due to global warming, the extent of sea ice cover has gotten smaller and smaller over the summers since the 198ice cover has gotten smaller and smaller over the summers since the 1980s.

Also, I hate to sound like a broken record (as I said this about the «Southern sea ice is increasing» page too), but I don't see why we need both this page and the one called «IPCC global warming projections were wrong,» as they both seem to cover the same topic.

Whereas the State of the Climate reports put together periodically by the NOAA National Climatic Data Center (most recently the 2012 State of the Climate report) present global - scale atmospheric, oceanic, and sea ice data, the EPA report focuses on the U.S. and covers a wider range of environmental and societal variables.

Another indicator of intensifying global warming: The area of Arctic Ocean covered by sea ice, a major influencer of weather for the Northern Hemisphere, continued its multi-year shrinking trend.

More clouds are slowing this process but along with the Sun going into idle, extra clouds, extra sea ice exposed for longer and vast snow cover it must mean only one thing, Global Cooling.

For example, additional evidence of a warming trend can be found in the dramatic decrease in the extent of Arctic sea ice at its summer minimum (which occurs in September), decrease in spring snow cover in the Northern Hemisphere, increases in the global average upper ocean (upper 700 m or 2300 feet) heat content (shown relative to the 1955 — 2006 average), and in sea - level rise.

With these trends in ice cover and sea level only expected to continue and likely worsen if atmospheric carbon dioxide levels continue to rise, they could alter the stresses and forces fighting for balance in the ground under our feet — changes that are well - documented in studies of past climate change, but which are just beginning to be studied as possible consequences of the current state of global warming.

The report tracks patterns, changes, and trends of the global climate system, including: greenhouse gases; temperatures throughout the atmosphere, ocean, and land; cloud cover; sea level; ocean salinity; sea ice extent; and snow cover.

Advance research on the interactions between arctic sea ice and global physical systems such snow cover extent, ocean and atmospheric circulation patterns, and mid-latitude effects.

Previously, Kelly was a Postdoctoral Fellow and Research Associate at the University of Washington and the University of Victoria in British Columbia, Canada where she studied the role of the changing Arctic sea ice cover on global circulation, weather, and climate using a hierarchy of numerical global climate models.

The President made several incorrect statements, including suggesting that global temperatures are not increasing, and sea ice cover is not declining.

What's more, they continue to ignore the broader, more important problem with Will's discussion of sea ice: the facts that picking out two days from a thirty - year time series is not a meaningful way to look at climate trends, and that climate models do not, in fact, lead you to expect a decrease in global ice cover.

The melting of ice that now covers land, such as mountain glaciers, also contributes to the sea - level rise and most likely results from global warming.