Sentences with phrase «strongest warming period»

That this cycle coincides with the strongest warming period in the same 100 years.

Well the devil is in the details — further, if we are to be convinced by the AR5 attribution of what is essentially a strong warming period of 30 years, then unexplained periods temperature variability of 30 years are significant.

Not exact matches

While a 16 - year - period is too short a time to draw conclusions about trends, the researchers found that warming continued at most locations on the planet and during much of the year, but that warming was offset by strong cooling during winter months in the Northern Hemisphere.

«Looking at weather and dengue incidents over longer periods, we found a similar strong link between how increased rainfall and warmer temperatures resulting from the reoccurring el Niño phenomenon are associated with elevated risks of dengue epidemics.

Using climate models to understand the physical processes that were at play during the glacial periods, the team were able to show that a gradual rise in CO2 strengthened the trade winds across Central America by inducing an El Nino - like warming pattern with stronger warming in the East Pacific than the Western Atlantic.

«There seems to be a limit on how strong these ancient storms might be, but the number getting close to the limit appears to be larger during warmer periods,» Korty explains.

When the equatorial central and eastern Pacific is in a decadal warm period, summer monsoon rainfall is stronger in the Yangtze River valley but weaker in North China.

For the late 20th century, a period of strong greenhouse gas increases, but with diminishing solar influence, variability in ocean warming shown in the profiles falls much further still.

The trend in more cold extremes was strongest during the period since pronounced Arctic warming emerged, or about the last 25 years, which lends at least some support to the possibility that that warming is helping fuel the trend, Shepherd said.

In 1975 a strong warming trend began and in 1988 James Hansen went to Congress and made a big deal about a warming period of just 13 years.

In contrast, the warming during the most recent period, often used as evidence of human induced climate change, is characterized by temperature moderation — the pattern of temperature rise exhibits a strong, preferential warming of the coldest days of the year.

In 1880 — 1919, before the appearance of the strong warming trend over this region, WEIO tended to be anomalously colder than EEIO most of the time, and thus we see the strong negative events show in Fig. 4, since we have used the climatology of the entire period from 1880 to 2004 as the reference.

In the case of this summer, to make it familiar, the NE North American Coast and most of Canada is cooler by extensive periods of cloud coverage, cooling caused by this region clashes with the US South extreme heat, given less bouts of clouds up North, the North American warming record would have been amazingly strong, but permanent cloud episodes over one region or another travel, never last forever, as such not causing a permanent shift in the temperature record (unless the clouds cover or not wide swats of the Polar regions).

Except for the early 1930s, the periods with strong El Nino were warmest of record at climate stations in the Midwest (periods based on 5 year annual moving averages).

To plan for warming in the face of strong science for cooling is a huge risk as it is the cooler periods that are the most difficult to navigate.

That we can get a 10 - or even 15 - year period with no real change in globally averaged temperature even though in the end we have strong global warming.

That the noise of natural variability can temporarily be strong enough to make the underlying warming signal seem to «disappear» for short periods is nothing new.

And surely the fact that having just that circumstance — with strong el Nino at the start of the cherry picked period and la Nina's at the tail — should see a clear temperature «drop» instead of merely levelling off confirms the existence of an underlying warming trend.

# 92 Spencer el al 2007 paper doesn't really support the precise mechanism proposed by Lindzen for Iris effect, but more simply observes a strong TOA negative correction associated with warming events at 20 ° S - 20 ° N (that is: in the 2000 - 2005 period of observation, the most significative warming episodes of the surface + low troposphere — 40 days or more — leads to a negative SW+LW cloud forcing at the top of the atmosphere).

... but more simply observes a strong TOA negative correction associated with warming events at 20 ° S - 20 ° N (that is: in the 2000 - 2005 period of observation, the most significative warming episodes of the surface + low troposphere — 40 days or more — leads to a negative SW+LW cloud forcing at the top of the atmosphere).

Our study is not about range change, but about a 10-fold increase in a key predator that is a native but has increased dramatically in abundance during a period of strong warming.

Over short periods they certainly do that but over periods of few decades it's likely that the warming effect of CO2 is stronger.

Not only that, but they give it power over El Nino by pontificating that «Pinatubo climate forcing was stronger than the opposite warming effects of either the El Nino event or anthropogenic greenhouse gases in the period 1991 - 93.»

On global temperature trends, one thing to note is that the 1997 - 2001 period was one of a strong La Nina (cool) followed by a strong El Nino (warm) followed by a strong La Nina (cool).

Notice how the strong «Medieval Warm Period» around 1000 A.D. in the Esper et al. version contradicts the «Medieval Cold Period» of the Briffa et al., version.

Study: Ammonium as ice core proxy shows strong Medieval Warm Period in the tropics.

«It is generally accepted that the climate warms during periods of strong solar activity (e.g., the Medieval Warm Period) and cools during periods of low solar activity (e.g., the Little Ice Age).»

how can a Sun that has constant TSI (averaged over a solar cycle) during 1950 - 2000 play any role in the global warming that was at its strongest over that period

Certainly, but whether high or low, if the Sun is going to influence global warming then how can a Sun that has constant TSI (averaged over a solar cycle) during 1950 - 2000 play any role in the global warming that was at its strongest over that period?

It IS thought that these warm periods at the PEAK of the oscillation will be TURBULENT with altering STRONG weather patterning.

These provide strong contextual confirmation supporting CET on the Medieval Warming period, Little Ice Age etc..

If you have an alternative widely accepted dataset that (a) covers the period 1860 - 1950 and (b) an alternative description of it that does not entail as strong a rise over that period as HadCRUT3 does I'd happy to evaluate your claim that global warming is not happening based on your dataset and analysis.

I pointed out to TCW that, contrary to her claim that «there has been no overall shift in temperature in 18 years», Jo Nova's graph showed a particularly strong warming trend in that period.

However, this effect seems not to be strong enough to prevent CO2 rising during a warm period in the ice ages.

Hard data trends in radiative flux — trends that are internally consistent, consistent across platforms and consistent with surface observations of cloud in the Pacific — show strong warming in the SW and cooling in UV in the period in question.

«It is well known that strong to violent tornado activity in the US has decreased markedly since statistics began in the 1950s, which has also been a period of average warming.

This does not invalidate the evidence as the overall warming happened to be strong enough to be difficult to explain without AGW, but equally well it might have happened that the natural variability and AGW would have largely canceled each other leading to total lack of evidence for AGW over that period.

We will likely experience periods of strong hurricanes in the future, but any attempt to attribute hurricanes to global warming should be looked at with a jaundiced eye.

«Those natural climate variations could be stronger than the global - warming trend over the next 10 - year period,» Wood said in an interview.

«We evaluate to what extent the temperature rise in the past 100 years was a trend or a natural fluctuation and analyze 2249 worldwide monthly temperature records from GISS (NASA) with the 100 - year period covering 1906 - 2005 and the two 50 - year periods from 1906 to 1955 and 1956 to 2005... The data document a strong urban heat island eff ect (UHI) and a warming with increasing station elevation... About a quarter of all the records for the 100 - year period show a fall in temperatures... that the observed temperature records are a combination of long - term correlated records with an additional trend, which is caused for instance by anthropogenic CO2, the UHI or other forcings... As a result, the probabilities that the observed temperature series are natural have values roughly between 40 % and 90 %, depending on the stations characteristics and the periods considered.»

It's, however, equally wrong to claim that this period is strong evidence against AGW or against the expectation that in longer term the warming will continue.

«causes of the earlier warming are less clear since this period precedes the time of strongest increases in human - induced greenhouse gas (radiative) forcing.»

The last thirty years should have been the period of strongest warming from anthro CO2 forcing.

While the latter warming is often attributed to a human - induced increase of greenhouse gases, causes of the earlier warming are less clear since this period precedes the time of strongest increases in human - induced greenhouse gas (radiative) forcing.»

A number of recent studies have found a strong link between peak human - induced global warming and cumulative carbon emissions from the start of the industrial revolution, while the link to emissions over shorter periods or in the years 2020 or 2050 is generally weaker.

This data seems to suggest modern warming stronger than that seen in the medieval periods displayed (see figure 2): «Ensemble reconstruction constraints on the global carbon cycle sensitivity to climate»

Our results indicated that vegetation greenness in the Great Basin increased significantly during the study period... [C] limate warming played a strong role in extending GSL [growing season length] that in turn resulted in the upward trend in mean vegetation greenness during 1982 — 2011.

-- During this period we have observed a strong, warm El Niño trend, culminating with the super El Niño of 1997/1998, which led to the all - time warmest year of the modern record.

Likewise, the strong warming over the 1980s / 1990s correlates with frequent and strong El Niño during that period.

This is a concern as it means each time we have a warming period to reach a new and probably higher level of global mean temperature, the AGW scam will get stronger and stronger.