Sentences with phrase «global sea ice trend»

«Global Sea ice trend by year only (barely) crosses 95 % significance when the first two months of satellite data is included for the entire record.»

Here's the global sea ice trend, combining what's going on up north and down south.

From 2006 to 2016, global sea ice trends have also been remarkably stable despite a massive increase in anthropogenic CO2 emissions during this period.

Not exact matches

Too much debate treats temperature (and especially the most recent global average) as the sole indicator, whereas many other factors are at play including sea levels, ocean acidity, ice sheets, ecosystem trends, and many more.

Researchers are still investigating what forces, including global warming, are driving Antarctic sea ice trends.

As a result, the amount of global sea ice continues a net downward trend.

«Environmental scientists have been saying for some time that the global economy is being slowly undermined by environmental trends of human origin, including shrinking forests, expanding deserts, falling water tables, eroding soils, collapsing fisheries, rising temperatures, melting ice, rising seas, and increasingly destructive storms,» 6.

Here are some possible choices — in order of increasing sophistication: * All (or most) scientists agree (the principal Gore argument) * The 20th century is the warmest in 1000 years (the «hockeystick» argument) * Glaciers are melting, sea ice is shrinking, polar bears are in danger, etc * Correlation — both CO2 and temperature are increasing * Sea levels are rising * Models using both natural and human forcing accurately reproduce the detailed behavior of 20th century global temperature * Modeled and observed PATTERNS of temperature trends («fingerprints») of the past 30 years agsea ice is shrinking, polar bears are in danger, etc * Correlation — both CO2 and temperature are increasing * Sea levels are rising * Models using both natural and human forcing accurately reproduce the detailed behavior of 20th century global temperature * Modeled and observed PATTERNS of temperature trends («fingerprints») of the past 30 years agSea levels are rising * Models using both natural and human forcing accurately reproduce the detailed behavior of 20th century global temperature * Modeled and observed PATTERNS of temperature trends («fingerprints») of the past 30 years agree

The most exciting thing is we'll get a chance to see the relative strength of all of these over the next few years, and it will most interesting to compare the total decade of 2010 - 2019 to previous decades in terms of the trends in Arctic Sea ice, Global Temps, and of course, OHC.

On Mr. Will's defense of his accuracy, particularly on trends in sea ice at both poles as they related to global warming, it's worth pointing out a few things.

There are certainly better indicators of global warming trends — ice sheet volume, sea ice extent and sea surface temperatures all come to mind — but hurricanes get people's attention.

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).

Over all, the analysts as a group see no deviation from the long - term trend toward thinning and dwindling summer sea ice given how the Arctic tends to amplify the long - term global warming trend.

Vicky Pope, a meteorologist in England's climate and meteorology office, has a remarkable op - ed in the Guardian warning that scientists, the media and campaigners of all stripes who use short - term trends in weather or sea ice to make points are misleading the public about global warming.

Figure 3: National Snow and Ice Data Center (NSIDC) Antarctic, Arctic, and global (sum of the two) sea ice extents with linear trenIce Data Center (NSIDC) Antarctic, Arctic, and global (sum of the two) sea ice extents with linear trenice extents with linear trends.

While sea ice in the Arctic grows and shrinks with the seasons, there is an overall declining trend, as north pole has warmed roughly twice as fast as the global average.

Arbetter, 4.7, Statistical A statistical model using regional observations of sea ice area and global NCEP air temperature, sea level pressure, and freezing degree day estimates continues the trend of projecting below - average summer sea ice conditions for the Arctic.

Just as importantly, he says, the model helps to explain regional trends that seem to defy the global warming hiatus, including record - breaking heat in the United States last year, and the continued decline of Arctic sea ice.

sea ice, arctic, antarctic, climate change, global warming, general linear model, dummy variable, regression, deseasonalized trend, trend analysis

Keywords: Arctic sea ice, Antarctic sea ice, passive microwave imaging, global warming, climate change, polar ice caps, sea ice extent, sea ice dispersion, trends, uncertainty in trends, statistical inference

Over the long - term, melting of the West Antarctic Ice Sheet could yield as much as 10 to 14 feet of global average sea level rise, with local sea level rise varying considerably depending on land elevation trends, ocean currents and other factors.

When sceptics look at statistical data, whether it is recent ice melt, deep sea temperatures, current trend in global surface temperatures, troposphere temperatures, ice core records etc. they look at the data as it is without any pre-conceptions and describe what it says.

The long - term trend is for the sea ice to continue melting due to global warming, meaning the scramble to access these resources will only intensify.

ocean temperatures, widespread melting of snow and ice, and rising global average sea level,» are three disjoint sources of confirmation that give us reliable enough trend information to establish consilience about what we may say after 2005 on HadCRUT4.

There has been a long - term downward trend in summer global sea ice extent, though the trend is less clear in the winter, reflecting the fact that the Arctic shows a clearer long - term trend than the Antarctic.

Much importance has been ascribed to tracking the change in Arctic sea ice, but what about the global trend?

However there is some important information that needs to be presented related to the global trend of sea ice as measured by satellite since 1979.

If you correct for the discontinuity in the way area is measured, it's undeniable that global sea ice has trended down over the time span monitored by satellites.

I'm inclined to think that Ocean Heat Content, trends in land ice and Sea levels are more appropriate indicators of global climate change than surface air temperatures, but that's another issue.

Or does the background trend in Figure 3 represent the global warming «forced» signal of an ever - increasing sea ice loss, plus natural variability (Bitz)?

The first graph on global sea ice area uses an expanded scale in an attempt to hide the fact that indeed, there's a declining trend (caption «no trend over 30 years»).

Although there is significant season - to - season and year - to - year variability of world sea - ice coverage, there is no dramatic trend in global sea - ice loss.

In any event, it would not be surprising to find a slight downward trend for sea ice as the late 1970s came at the end of a decades - long period of slight global cooling.

In fact, it's pretty clear that the end - summer sea ice extent at one Pole doesn't mean anything WRT global temperature, especially if there is an opposite trend at the other Pole.

1 — did the circulation - driven fall in Arctic sea ice (which AR4 models don't do a great job of) have anything to do with the recent jump in Arctic temperatures and if so, could we get the «right» global temp trend for the «wrong» reasons.

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.

If the sea ice around Antarctica is growing (on a decadal trend basis)-- which any schoolboy analysis of freely available basic data shows...... what does this tell you about the certainty of global warming?

Global Warming Theory «Completely Disconnected From the Observations» Extensive analysis of temperature trends in the Arctic reveals that there has been no detectable long - term change since the beginning of the 20th century, and thus predictions of a sea ice - free Arctic in the coming decades due to dramatically rising temperatures are not rooted in observation.

With virtually all CAGW projections diverging further from reality, CAGW's survival depends on propagandizing lies and half - truths: the «97 %» meme, severe weather, sea levels, global warming trends, ocean acidification, polar bear and penguin populations, polar ice caps, etc., are all supposedly worsening at «unprecedented» rates.

In fact, the sea ice gains in Antarctica have perhaps modestly superseded the losses in the Arctic, resulting in a very slight increasing overall trend in global - scale sea ice during the last 10 years:

The Antarctic sea ice extent has been slowly increasing contrary to expected trends due to global warming and results from coupled climate models...

Following the trend in global modelling, RCMs are increasingly coupled interactively with other components of the climate system, such as regional ocean and sea ice (e.g., Bailey and Lynch 2000; Döscher et al., 2002; Rinke et al., 2003; Bailey et al., 2004; Meier et al., 2004; Sasaki et al., 2006a), hydrology, and with interactive vegetation (Gao and Yu, 1998; Xue et al., 2000).

The G refers to global, thus the MEAN global T must rise, the mean sea ice extent must decrease, global sea level trend must increase, global tornadoes must rise, global floods must increase, the rate of global sea riseust rise, and all the global change MUST be catastrophic, and clearly outside of recent past global flux.

For both hemispheres combined, then, the addition of about 65 ppm of atmospheric CO2 concentration since 1979 has apparently had no overall effect on global - scale sea ice trends.

In its latest post the site looks at the July results and the overall global temperature and sea ice trend.

«Climate scientists have cracked the mystery of why Antarctic sea ice has managed to grow despite global warming — but the results suggest the trend may rapidly reverse, a new study says.»

The loss of sea ice also has the potential to accelerate global warming trends and to change climate patterns.

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.

In a February report, Dr. Parkinson said, «If trends toward shortened sea ice seasons and lesser sea ice coverage continue, this could entail major consequences to the polar and perhaps global climate, and to the lifestyles and survivability of selected Arctic plant and animal species.»