Sentences with phrase «global temperatures during»

Regardless of the cause, which some have attempted to explain as due to industrial aerosol cooling, one can't accuse CO2 emissions of raising global temperatures during a period when there was no such rise.

This data can be compared to global temperatures during the same period, to determine if the Sun is responsible for most of the warming and cooling of our Earth.

The studies involved conclude that the minor increases in global temperatures during this period can be entirely explained using natural factors.

The cooling and leveling off of average global temperatures during the 1950's and 1960's is attributed primarily to aerosols from fossil fuels and other sources, when the greenhouse warming was overwhelmed by aerosol cooling.

Although natural variations in the solar output can explain most of the temperature variations over the past centuries, it appears that global warming by heat - trapping gases, emitted by human activity, is required to explain the sharp rise in global temperatures during the 1990s.

There, to Nicol's amazement he found nothing apart from the oft quoted: «We believe that most of the increase in global temperatures during the second half of the 20th century was very likely due to increases in the concentration of atmospheric carbon dioxide».

The global temperatures during and after the recent El Nino demonstrate it was inconsequential.

It includes inter alia information on global temperatures during 2007, regional temperatures anomalies, droughts, storms and flooding, cyclones, and Artic sea ice.

The difference between global temperatures during an Ice Age and an ice - free period is only about 5ºC.

If you average everything out, global temperatures during this period were actually COOLER than they are now.

Human SO2 levels had been declining until 2005 (end of data) while global temperatures during the same period were rising for majority of it.

Only a few studies have attempted to assign a specific value to changes in average global temperatures during the MWP.

Despite these reclassifications, the general conclusions are similar from previous work: (1) global temperature anomalies for each phase (El Niño, La Niña, and neutral) have been increasing over time and (2) on average, global temperatures during El Niño years are higher than neutral years, which in turn, are higher than La Niña years.

Earth is currently in an interglacial period, and based on previous ice ages and the changes in global temperatures during this interglacial period, we are now near the end of it.

The right chart represents the latest HadCRUT global temperatures during the same time period, along with the atmospheric CO2 levels.

However, other areas were colder, and overall evidence suggests that global temperatures during this period were similar to those at the beginning or middle of the 20th century, and colder than today.

«Does the Agulhas Current Amplify Global Temperatures During Super-Interglacials?»

A study by Kosaka and Xie recently published in Nature confirms that the slowing rise in global temperatures during recent years has been a result of prevalent La Niña periods in the tropical Pacific.

While El Niño played a role in bumping up global temperatures during 2015 and 2016, the bulk of the warmth was due to the excess heat trapped by greenhouse gases emitted by humans over the past century, particularly carbon dioxide.

That increase is comparable to the increase in global temperature during the 20th century of about 0.6 °C.

The PDO is responsible for most of the dip in global temperature during the mid 20th century, leading one to question why aerosols are used to duplicate that temperature drop in GCMs.

Stepping back from there, Hansen looks at 1940 and above: «The approximate stand - still of global temperature during 1940 - 1975 is generally attributed to an approximate balance of aerosol cooling and greenhouse gas warming during a period of rapid growth of fossil fuel use with little control on particulate air pollution, but quantitative interpretation has been impossible» That's the excuse and it is laughable.

The approximate stand - still of global temperature during 1940 - 1975 is generally attributed to an approximate balance of aerosol cooling and greenhouse gas warming during a period of rapid growth of fossil fuel use with little control on particulate air pollution, but quantitative interpretation has been impossible because of the absence of adequate aerosol measurements.

The assumed aerosol forcing is also unique for each model and «fudges» each model to hindcast global temperature during the past century.

I wonder how the Australian temperature record contributes to calculation of global temperature during the Pause.

The approximate stand - still of global temperature during 1940 - 1975 is generally attributed to an approximate balance of aerosol cooling and greenhouse gas warming during a period of rapid growth of fossil fuel use with little control on particulate air pollution, but satisfactory quantitative interpretation has been impossible because of the absence of adequate aerosol measurements.

Atmospheric CO2, CH4 and N2O have varied almost synchronously with global temperature during the past 800000 years for which precise data are available from ice cores, the GHGs providing an amplifying feedback that magnifies the climate change instigated by orbit perturbations [29 — 31].

The approximate stand - still of global temperature during 1940 - 1975 is generally attributed to an approximate balance of aerosol cooling and greenhouse gas warming during a period of rapid growth of fossil fuel use with little control on particulate air pollution -LSB-...]»

For example that the global temperature during the previous interglacial was less than 1 degree warmer than the present one.

This sharp, unprecedented rise in the average global temperature during the last decade of the 20th century can not be explained as a temporary swing produced by natural causes alone, and its is very likely that heat - trapping waste gases are at least partly responsible for it.

The MBH98 and MBH99 papers are focused on paleoclimate temperature reconstruction and conclusions therein focus on what appear to be a rapid rise in global temperature during the 1990s when compared with temperatures of the previous millennium.

The issue as I see it (trying to avoid statistical definitions) is that there is a real possibility that there is a level of «natural» variation in global temperature during the Holocene which is not apparent in the instrument temperature record, and which could lead to substantially incorrect attribution of the measured 20th century temperature rise to GHG forcing.

Not exact matches

Schmidt's rough estimate, which he posted on Twitter, is based on the extraordinary and unprecedented warming over the past 12 months, during which time global surface temperatures have shot past the 1 °C above pre-industrial level.

During the Eocene, the concentration of carbon dioxide in the atmosphere was more than 560 parts per million, at least twice preindustrial levels, and the epoch kicked off with a global average temperature more than 8 degrees Celsius — about 14 degrees Fahrenheit — warmer than today, gradually cooling over the next 22 million years.

For projections of future temperature and precipitation during the near future (2021 - 2050) and the far future (2071 - 2100), the researchers used 11 different global climate models.

Climate scientists find the last glacial period interesting because ice cores in Greenland and ocean sediment cores have shown that during this period there were sharp shifts in global temperatures.

There are three main time scales to consider when it comes to warming: annual temperature variation from factors like warming in the Pacific Ocean during El Niño years, decadal temperature swings and long - term temperature increases from global warming.

In fact, the mitigation pledges collected under the ongoing Cancun Agreements, conceived during the 2010 climate talks, would lead to global average temperature rise of more than 2 degrees Celsius, according to multiple analyses — and may not lead to a peaking of greenhouse gas emissions this decade required to meet that goal.

(Global average temperature fell by about a degree during the Little Ice Age, although scientists have struggled to quantify local cooling.)

Despite its smaller ash cloud, El Chichn emitted more than 40 times the volume of sulfur - rich gases produced by Mt. St. Helens, which revealed that the formation of atmospheric sulfur aerosols has a more substantial effect on global temperatures than simply the volume of ash produced during an eruption.

That's what researchers found when they looked back 56 million years, during a time when global temperatures increased about 6 ° for a period of 20,000 years.

A recent report by two leading nonprofits, the Rocky Mountain Climate Organization and the Natural Resources Defense Council, details how the 11 U.S. western states together have experienced an increase in average temperature during the last five years some 70 percent greater than the global average rise.

«While it is encouraging that most ecosystems were able to adapt during the PETM, today's global temperature could be increasing at a rate that is too fast for plants and animals to adjust.»

During the PETM, atmospheric carbon dioxide more than doubled and global temperatures rose by 5 degrees Celsius, an increase that is comparable with the change that may occur by later next century on modern Earth.

The deceleration in rising temperatures during this 15 - year period is sometimes referred to as a «pause» or «hiatus» in global warming, and has raised questions about why the rate of surface warming on Earth has been markedly slower than in previous decades.

Statistical analysis of average global temperatures between 1998 and 2013 shows that the slowdown in global warming during this period is consistent with natural variations in temperature, according to research by McGill University physics professor Shaun Lovejoy.

Ice cores from Greenland and West Antarctica suggest that average global temperatures quickly shot up during that time.

The increase in carbon dioxide levels recorded so far has played the most important role in pushing average global temperatures up by 1 °C (1.8 °F) during the last 200 years.

Global warming is desiccating the region in two ways: higher temperatures that increase evaporation in already parched soils, and weaker winds that bring less rain from the Mediterranean Sea during the wet season (November to April).

By comparing the small oscillations in cosmic ray rate and temperature with the overall trends in both since 1955, Sloan and Wolfendale found that less than 14 percent of the global warming seen during this period could have been caused by solar activity.