Sentences with phrase «ice concentration trends»

Not exact matches

Changes in the winds around Antarctica therefore change ice - concentration trends around Antarctica [8] by influencing sea - ice production and melt rates [9].

The only explanation that we have for the sustained downward trend in sea - ice extent is the increase in greenhouse - gas concentrations.

WMO will issue its full Statement on the State of the Climate in 2017 in March which will provide a comprehensive overview of temperature variability and trends, high - impact events, and long - term indicators of climate change such as increasing carbon dioxide concentrations, Arctic and Antarctic sea ice, sea level rise and ocean acidification.

They argued that high CO2 concentrations explained the polar warmth and the decline in CO2 explained the advent of polar ice caps and the 55 million year trend towards our icehouse climate.

As researchers documented in this graph, the region had experienced increasing precipitation during the Little Ice Age, followed by a sharp drying trend that began in the late 1700s, which triggered Kilimanjaro's retreat long before CO2 ever reached significant concentrations.

2012's sea ice area and extent were already trending low this year, but damage done to the thin and low concentration of ice by this storm almost ensures that 2012 will eclipse 2007 in all categories as the lowest sea ice on record by the time the September low is set.

«When you start looking at longer - term trends, 50 or 60 years, there's no escaping the loss of ice in the summer,» Kay said, telling LiveScience that «the long - term fate is basically sealed if we continue to increase greenhouse gas concentrations in the atmosphere.»

The examination of variability ranging from seasonal to interdecadal scales, and of trends within the climate patterns and total Antarctic sea ice concentration (SIC) for the 32 — yr period (1982 — 2013) are the key focuses of this paper.

The most likely explanation for the linear trend [in sea ice decline] during the satellite era from 1979 onwards is the almost linear increase in CO2 concentration during that period.

The positive temperature trends over the WAIS are spatially adjacent to the negative trends in sea ice concentration over the Amundsen and Bellingshausen Seas.

Here, the sea ice data are used to illuminate how the trends in sea ice concentration relate spatially and temporally to the trends in land temperatures.

The trends in sea ice concentration, expressed as fractional change per decade are plotted in Fig. 3 with the sign inverted with respect to the sign of the temperature trends.

Furthermore, virtually all of the negative trends in ice concentration in the Amundsen Sea and a third or more of the negative sea ice trends in the Bellingshausen Sea are explained, along with a third or more of the positive sea ice trends in the Ross Sea.

a 30 - year (1979 — 2008) trends in temperature from M10 (colors on Antarctic land), sea ice concentration (colors over ocean; note the sea ice colorscale is reversed with respect to the temperature colorscale), and Z850 (contours).

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.

A combination of historical ice core data and air monitoring instruments reveals a consistent trend: global atmospheric methane concentrations have risen sharply in the past 2000 years.

More than 20 years ago, analyses of greenhouse gas concentrations in ice cores showed that downward trends in CO2 and CH4 that had begun near 10,000 years ago subsequently reversed direction and rose steadily during the last several thousand years.

The 30 % concentration graph, the DMi graph, one that is weightier than the 15 % because it shows what is happening at the heart of the Arctic, and not just what is happening (for the moment) around the circumference of the ice, shows a rapid, and strong (even surprising for how strong it is this year) growing trend in Arctic ice since 2007.

Ice concentrations have declined significantly along the northern Northwest Passage route during July and early August and clearing along the western end of the route is trending a week earlier than in 2007.