Sentences with phrase «from high northern latitudes»

Note in panel (a) solar forcing that, aside from the high northern latitudes, the most warming also occurs in the tropics between 200 - 300 hPa, but that unlike in panel (c) well - mixed greenhouse gasses that the warming goes all the way to TOA.

Not exact matches

To achieve these desirable qualities, greenhouse growers in northern latitudes must rely on supplemental lighting from high - pressure sodium lamps during winter months.

The research team used data from over 100 individual magnetometers located at high latitudes in the northern hemisphere.

For example, in higher latitudes such as northern Canada and Greenland, coastal waters usually act as carbon sinks, absorbing excess carbon dioxide from the atmosphere.

[Response: High northern latitudes were warmer 5000 years ago (or even 9000 years ago) but the tropics were probably cooler, and in the mean the planet was probably not that different from now.

During the last deglaciation, and likely also the three previous ones, the onset of warming at both high southern and northern latitudes preceded by several thousand years the first signals of significant sea level increase resulting from the melting of the northern ice sheets linked with the rapid warming at high northern latitudes (Petit et al., 1999; Shackleton, 2000; Pépin et al., 2001).

Another seemingly useful clue is that, during a period of methane doldrums (no rise) from 1999 - 2002, the N / S gradient of methane relaxed a bit [Dlugokencky et al., 2003], suggesting that the doldrum was due to a decline in a methane source in the northern high latitudes.

Also, if you look at Table T2 in this paper, you will see that ocean sea surface heat storage 0 - 700m from 1955 - 2003 (in W / m2) is always higher at northern latitudes than the corresponding southern latitudes in every case, even with the extensive Southern Ocean warming as noted by Gavin responding to # 18.

I believe that we are already seeing higher temperature anomalies, compared to the rest of the globe, in the northern latitudes just from increased in CO2.

Most interesting is that the about monthly variations correlate with the lunar phases (peak on full moon) The Helsinki Background measurements 1935 The first background measurements in history; sampling data in vertical profile every 50 - 100m up to 1,5 km; 364 ppm underthe clouds and above Haldane measurements at the Scottish coast 370 ppmCO2 in winds from the sea; 355 ppm in air from the land Wattenberg measurements in the southern Atlantic ocean 1925-1927 310 sampling stations along the latitudes of the southern Atlantic oceans and parts of the northern; measuring all oceanographic data and CO2 in air over the sea; high ocean outgassing crossing the warm water currents north (> ~ 360 ppm) Buchs measurements in the northern Atlantic ocean 1932 - 1936 sampling CO2 over sea surface in northern Atlantic Ocean up to the polar circle (Greenland, Iceland, Spitsbergen, Barents Sea); measuring also high CO2 near Spitsbergen (Spitsbergen current, North Cape current) 364 ppm and CO2 over sea crossing the Atlantic from Kopenhagen to Newyork and back (Brements on a swedish island Lundegards CO2 sampling on swedish island (Kattegatt) in summer from 1920 - 1926; rising CO2 concentration (+7 ppm) in the 20s; ~ 328 ppm yearly average

As we shall examine shortly, the source of «the decline» come from temperature reconstructions calculated from tree - ring density at high northern latitudes (Briffa 1998).

AGW is on the order of 0.05 C / decade globally and it's a good thing because it is largely delivered to high northern latitudes in the winter which benefit from milder winter temperatures.

This is in agreement with results from a similar study of Nohara et al. (2006), which showed that the ensemble mean runoff change until the end of the 21st century (from nineteen GCMs) is smaller than the standard deviation everywhere except at northern high latitudes.

The overturning circulation pushes water through the Atlantic Basin, distributing heat as it moves warmer surface water from the tropics toward Greenland and the high northern latitudes and carries colder, deeper water from the North Atlantic southward.

The main reason for this warmer climate was an increased amount of energy from the Sun being received at high northern latitudes due to Earth's orbital configuration, plus Earth had an increased capacity to absorb heat due to vegetation changes and reduced ice and snow cover.

Willie Soon the astrophysicist from Harvard has done some research where he finds a solar signature in climate patterns over the last century or two (nothing original there) but further, he finds a correlation between temporal patterns of solar input at the Arctic and high latitudes in the Northern Hemisphere, and tropical Atlantic ocean heat and SST patterns a decade or so later.

Such a strong acceleration of methane degassing from the Arctic would result in measurably higher concentrations of methane in the high northern latitudes.

The warm period in recent years differs qualitatively from the earlier warm period centered around 1940; the earlier warming was focused at high northern latitudes, while the recent warming is more global.»

GMT drops initially at glacial inception in response to decreased summer radiation at high northern latitudes that would have led to equatorward extension of sea ice and snow cover with associated cooling from increased albedo.

Weather conditions have constrained the discovery of hydrothermal vents at high latitudes, although there is evidence from water column plumes that vents occur in the Arctic along the Gakkel Ridge [10], the Mohn Ridge, [11] and the Arctic Mid-Ocean Ridge [12], and in the Southern Ocean, in Antarctica, along the East Scotia Ridge (ESR), in the Scotia Sea [13], in the Bransfield Strait, west of the northern Antarctic Peninsula [14], [15], and along the Pacific - Antarctic Ridge [16].

It's albedo change from increased autumnal snow cover at high northern latitudes.

For example, atmospheric GCM simulations driven by reconstructed SSTs from the Pliocene Research Interpretations and Synoptic Mapping Group (Dowsett et al., 1996; Dowsett et al., 2005) produced winter surface air temperature warming of 10 °C to 20 °C at high northern latitudes with 5 °C to 10 °C increases over the northern North Atlantic (~ 60 ° N), whereas there was essentially no tropical surface air temperature change (or even slight cooling)(Chandler et al., 1994; Sloan et al., 1996; Haywood et al., 2000, Jiang et al., 2005).

However, both sediment records of atmospheric deposition of Hg2 + species at high northern latitudes and atmospheric GEM concentrations inferred from Greenland firn air support the conclusion that transfer of anthropogenic inorganic mercury through the atmosphere to terrestrial and marine reservoirs occurs on a large scale.

A new study in the Arctic north shows that water at the higher latitudes are undergoing as serious changes as other areas, but they're changing at an even faster rate.Physorg writes that researchers from nine European countries have turned a coal mine village off the coast of Ny - Aalesund, just shy of 750 miles from the North Pole, into a laboratory site during July in a major effort to understand how ocean acidification is altering the northern water.

In this paper, we present results from a natural archive that provides a unique history of gaseous elemental mercury concentrations at middle and high northern latitudes.

Hence, atmospheric GEM concentrations inferred from Greenland firn air and global anthropogenic Hg emissions have exhibited consistently similar trends during the most recent decades (Fig. 2), suggesting that the atmospheric reservoir of mercury at mid - and high - northern latitudes has been driven mainly by anthropogenic emissions during the last decades.

This suggests that risk assessment is needed for all coastal cities in the southern and southeastern U.S. for category 5 storms, and for the more northern cities (e.g. New York City) probably for category 3 storms (note the categorical risk for coastal cities at higher latitudes needs to be assessed using typhoon data from the Pacific).

The consequence might have been that the Pacific changed from more permanent El Niño - like conditions (which move heat from the tropics to high latitudes) to a more La Niña - like state (which would have curtailed the heat transfer and cooled the Northern Hemisphere).

Further affirmation of the reality of the warming is its spatial distribution, which has largest values at locations remote from any local human influence, with a global pattern consistent with that expected for response to global climate forcings (larger in the Northern Hemisphere than the Southern Hemisphere, larger at high latitudes than low latitudes, larger over land than over ocean).

Our ability to place the recent temperature increase in a longer paleoclimate perspective is also hampered by an apparent change in the sensitivity of recent tree - growth to temperature at high northern latitudes where trends in TRW and MXD have been reported to increasingly diverge from the instrumental records during the second half of the twentieth century (Jacoby and D'Arrigo 1995; Briffa et al. 1998a, b; D'Arrigo et al. 2007).

Also, most of the projected surface warming is the high latitudes of the northern hemisphere, along with the direst impacts (melting of arctic sea ice and greenland, release of methane from permafrost, etc)