Sentences with phrase «records over recent decades»

Several analyses of ring width and ring density chronologies, with otherwise well - established sensitivity to temperature, have shown that they do not emulate the general warming trend evident in instrumental temperature records over recent decades, although they do track the warming that occurred during the early part of the 20th century and they continue to maintain a good correlation with observed temperatures over the full instrumental period at the interannual time scale (Briffa et al., 2004; D'Arrigo, 2006).

Although she was sentenced to two years for trying to escape in the mid-1980s, her disciplinary record over recent decades has been spotless.

Not exact matches

The most important of these was an apparent mismatch between the instrumental surface temperature record (which showed significant warming over recent decades, consistent with a human impact) and the balloon and satellite atmospheric records (which showed little of the expected warming).

Over the past five decades, the number of GCRs reaching Earth has increased, and in recent years reached record high numbers.

Saigas have experienced one of the fastest declines recorded for mammals in recent decades: a 95 percent decrease in population over the past 20 years.

If one plots the records from GISS, HADCru, RSS and UAH; GISS is the outlier, and three of the four primary global temperature measuring systems show a decrease over the most recent six years and a downward trend over the past decade; not that this establishes a significant trend yet.

In a recent (of Sept. 16, 2005) publication in Science, Hatun et al. find that record - high salinities have been observed over the past decade in the region where water from the Atlantic flows into the northern oceans.

In recent decades, a number of groups have tried combining sets of these proxy records together to construct long - term estimates of global temperature change over the last millennium or so.

The change in climate norms over recent decades makes this a non-trivial problem, and it may be that different methods are required for recent and long term records.

The Indian Ocean seems to lack records of any alarming sea - level rise in recent decades; on the contrary, 10 sites analyzed indicate a sea level remaining at about ± 0.0, at least over the last 50 years or so.

Arctic sea ice extent (SIE) has decreased over recent decades, with record - setting minimum events in 2007 and again in 2012.

The author presents volumes of data from actual weather station records that show average temperatures declining over recent decades in many places.

It would have to be shown that the recent temperature record can be statistically significantly distinguished from the statistically significant warming signal, which can be detected when performing an analysis that uses data over multiple decades, from the mid-1970ies to present, or from the mid-1970ies up to the time, when the alleged change in the behavior of the global atmospheric temperature is supposed to have occurred.

The paper, co-authored by an international team of researchers led by Daniel Nepstad of the San Francisco - based Earth Innovation Institute, starts with a detailed overview of recent shifts in the Brazilian Amazon, including reasons for the 70 percent drop in deforestation recorded over the past decade.

Scientific consensus shows that as a result of human activities, GHG concentrations in the atmosphere are at record high levels and data shows that the Earth has been warming over the past 100 years, with the steepest increase in warming in recent decades.

We have a 161 year record (HadCRUT3), warts and all, that tells us the warming was around 0.7 °C over the entire period, or a linear warming rate of between 0.04 and 0.05 °C per decade, so this is probably more meaningful than the 65 - year «blip» (or the even less meaningful most recent 30 - year «blip», 1976 - 2005, used by IPCC to demonstrate AGW).

I have to conclude by suggesting that if the reported temperature record itself is something that you believe may be very different from the true trend of anomalies over the many decades of the past century — particularly the more recent decades — then you are probably grasping a slim reed in hoping to question mainstream conclusions.

Higher spring and summer temperatures, along with an earlier spring melt, are also the primary factors driving the increasing frequency of large wildfires and lengthening the fire season in the western U.S. over recent decades.13 The record - breaking fires this year in the Southwest and Rocky Mountain Region are consistent with these trends.

if no individual tide gauge records show a recent surge (and only a tiny fraction of long running ones show any trend change at all in recent decades), then claims that sea levels are surging are simply not tenable, for if GLOBAL sea levels are rising you would by logic alone expect that this would show up in actual single sites all over the globe.

You need a lesson in street smart logic: if no individual tide gauge records show a recent surge (and only a tiny fraction of long running ones show any trend change at all in recent decades), then claims that sea levels are surging are simply not tenable, for if GLOBAL sea levels are rising you would by logic alone expect that this would show up in actual single sites all over the globe.

This requires comparing changes observed over decades and centuries to long - term ecological baselines of change interpreted from relevant prehistoric records — much as the climate community has done with comparing recent changes with prehistoric proxy data (Barnosky et al., 2012; Hadly and Barnosky, 2009).

This experiment showed that the projections of climate models are consistent with recorded temperature trends over recent decades only if human impacts are included.