Sentences with phrase «regional average temperature change»

Those models will look at impacts such as regional average temperature change, sea - level rise, ocean acidification, and the sustainability of soils and water as well as the impacts of invasive species on food production and human health.

Not exact matches

Determining the rate of temperature change is more difficult at a local and regional level because researchers have less data to average, so trends are not as evident because of «statistical noise.»

Even if global warming is limited to these levels, changes in regional temperatures (and therefore climate change impacts) can vary significantly from the global average.

Human induced trend has two components, namely (a) greenhouse effect [this includes global and local / regional component] and (b) non-greenhouse effect [local / regional component]-- according to IPCC (a) is more than half of global average temperature anomaly wherein it also includes component of volcanic activities, etc that comes under greenhouse effect; and (b) contribution is less than half — ecological changes component but this is biased positive side by urban - heat - island effect component as the met network are concentrated in urban areas and rural - cold - island effect is biased negative side as the met stations are sparsely distributed though rural area is more than double to urban area.

While the anomalous nature of recent trends in global average temperature is often highlighted in discussions of climate change, changes at regional scales have potentially greater societal significance.

High - frequency associations (not shown here) remain strong throughout the whole record, but average density levels have continuously fallen while temperatures in recent decades have risen... As yet, the reason is not known, but analyses of time - dependent regional comparisons suggest that it is associated with a tendency towards loss of «spring» growth response (Briffa et al., 1 999b) and, at least for subarctic Siberia, it may be connected with changes in the timing of spring snowmelt (Vaganov et al., 1999).

Even though the average temperature stayed the same, there were still regional changes, with cooling in the tropics and warming at both poles (particularly in their respective winters):

But the current rise in Arctic temperature is due not to changes in global average temperature but to changes in regional weather patterns.

They clearly have not «proved» skill at predicting in a hindcast mode, changes in climate statistics on the regional scale, and even in terms of the global average surface temperature trend, in recent years they have overstated the positive trend.

Changes in instrumentation and data availability have caused time - varying biases in estimates of global - and regional - average sea - surface temperature.

Rohde, R. et al: «A new estimate of the average earth surface land temperature spanning 1753 to 2011», Manuscript: text presented at the 3rd Santa Fe conference on global and regional climate temperature change, 2011

As in the allegory, a «global average» temperature obscures critical dynamics that are best understood by examining local causes of «regional climate» change.

Other factors, including greenhouse gases, also contributed to the warming and regional factors played a significant role in increasing temperatures in some regions, most notably changes in ocean currents which led to warmer - than - average sea temperatures in the North Atlantic.

Adding data from around the world, however, indicates that the Medieval Warm Period was mainly a regional phenomenon, with warming in one region offsetting cooling in other regions, leaving little change in the average global temperature.

Note that regional proxies, such as the oxygen - isotope temperature reconstructions from the Greenland Ice Core Project that record Dansgaard - Oeschger events, often indicate faster regional rates of climate change than the overall global average for glacial - interglacial transitions, just as today warming is more pronounced in Arctic regions than in equatorial regions (Barnosky et al., 2003; Diffenbaugh and Field, 2013).

In other words, regional temperatures change, but the average global temperature doesn't.

Recent meta - analyses indicate that on average, examined terrestrial species have been moving poleward about 1.76 km / yr (reported as 17.6 + 2.9 km / decade), apparently keeping pace with regional temperature change, although species range shifts to higher elevations have on average lagged behind climate (Chen et al., 2011).

The impact on global average temperature seems indeed to be small; however, changing the flow of energy produces large regional impacts».

These range from simple averaging of regional data and scaling of the resulting series so that its mean and standard deviation match those of the observed record over some period of overlap (Jones et al., 1998; Crowley and Lowery, 2000), to complex climate field reconstruction, where large - scale modes of spatial climate variability are linked to patterns of variability in the proxy network via a multivariate transfer function that explicitly provides estimates of the spatio - temporal changes in past temperatures, and from which large - scale average temperature changes are derived by averaging the climate estimates across the required region (Mann et al., 1998; Rutherford et al., 2003, 2005).

Although there might be «slowdowns and accelerations in warming lasting a decade or more,» they write, the clear long - term trend is «substantial increases in global average surface temperature and important changes in regional climate.»

Using existing output data from global climate models, the researchers plotted projections of changes in global average temperature and rainfall against regional changes in daily extremes.