Written Testimony - The National Academies of Sciences
... 1999) and this newer supporting evidence, the committee finds it plausible that the Northern Hemisphere was warmer during the last few decades of the 20th century than during any comparable period over the preceding millennium. However, the substantial uncertainties currently present in the quantita ...
... 1999) and this newer supporting evidence, the committee finds it plausible that the Northern Hemisphere was warmer during the last few decades of the 20th century than during any comparable period over the preceding millennium. However, the substantial uncertainties currently present in the quantita ...
Climate change impacts on glaciers around the
... In 2001 a revised report was issued by the Intergovernmental Panel on Climate Change (IPCC), a body under the United Nations made up of more than 2500 scientists from around the globe. The IPCC found new and stronger evidence that most of the observed warming of the past 50 years is attributable to ...
... In 2001 a revised report was issued by the Intergovernmental Panel on Climate Change (IPCC), a body under the United Nations made up of more than 2500 scientists from around the globe. The IPCC found new and stronger evidence that most of the observed warming of the past 50 years is attributable to ...
Chemical forcing of climate - Atmospheric Chemistry Modeling Group
... Global mean surface temperature trend [IPCC, 2014] ...
... Global mean surface temperature trend [IPCC, 2014] ...
f(x) - Isaac Newton Institute for Mathematical Sciences
... • Is the sample somehow representative of the “true” uncertainty? • Could there be surprises and unknown unknowns? ...
... • Is the sample somehow representative of the “true” uncertainty? • Could there be surprises and unknown unknowns? ...
PowerPoint - Columbia University
... Global Warming Twenty Years Later: Tipping Points Near (today’s statement) ...
... Global Warming Twenty Years Later: Tipping Points Near (today’s statement) ...
Climate change: Sun the stars vs C02 - I
... at prices that are lower than those of unorganised retailers/vendors, will have to set up large procurement centres and enter into long-term contracts with farmers—the CPI(M) wants each large procurement centre that is set up by corporate retailers to reserve separate space for government agencies, ...
... at prices that are lower than those of unorganised retailers/vendors, will have to set up large procurement centres and enter into long-term contracts with farmers—the CPI(M) wants each large procurement centre that is set up by corporate retailers to reserve separate space for government agencies, ...
Reply to “Hurricanes and Global Warming— Potential Linkages and
... during the middle of the twentieth century. Landsea (2005) also showed a century-long time series of U.S. landfalling tropical cyclones that has distinct multidecadal variations, but no long-term upward trend similiar to SSTs. Pielke (2005) presented data indicating that the extreme impacts that oc ...
... during the middle of the twentieth century. Landsea (2005) also showed a century-long time series of U.S. landfalling tropical cyclones that has distinct multidecadal variations, but no long-term upward trend similiar to SSTs. Pielke (2005) presented data indicating that the extreme impacts that oc ...
S, L = global average values of incoming solar & outgoing
... Future Climate under increased Greenhouse Gas Emissions ...
... Future Climate under increased Greenhouse Gas Emissions ...
Global warming: Faster Than Expected?
... ago the Arctic was a subtropical paradise, with a balmy average temperature of 23 degrees C (73 degrees F) and crocodiles lurk- 2000s, “a lot of us were really nervous,” Alley recalls. Yet more ing off Greenland. The tropics may have been too hot for most detailed modeling showed that although “addi ...
... ago the Arctic was a subtropical paradise, with a balmy average temperature of 23 degrees C (73 degrees F) and crocodiles lurk- 2000s, “a lot of us were really nervous,” Alley recalls. Yet more ing off Greenland. The tropics may have been too hot for most detailed modeling showed that although “addi ...
LEAPS NEWSLETTER Arctic Ice Sheet Melting 30 Years Ahead of Scientists’
... The alarming difference in the ice concentration between the years 1979 and 2003. Images: NASA ...
... The alarming difference in the ice concentration between the years 1979 and 2003. Images: NASA ...
sea-ice extent - The Quality Status Report 2010
... decade since 1978 with declines being particularly marked in summer. The summer minimum has been declining at a rate of about 7.4 ± 2.4% (IPCC, 2007a) per decade. In September 2007, the lowest extent ever recorded of about half the normal minimum of the 1950s (EEA, 2008) was caused to some degree by ...
... decade since 1978 with declines being particularly marked in summer. The summer minimum has been declining at a rate of about 7.4 ± 2.4% (IPCC, 2007a) per decade. In September 2007, the lowest extent ever recorded of about half the normal minimum of the 1950s (EEA, 2008) was caused to some degree by ...
AOSS_NRE_480_L11_Abrupt_20140220
... – There is no doubt that airplanes emit carbon dioxide and other greenhouse gases. Air travel is an important part of the economy. When I read about air travel and climate impacts, the information is complicated. Often the discussion ends with the admission that there are not obvious options to make ...
... – There is no doubt that airplanes emit carbon dioxide and other greenhouse gases. Air travel is an important part of the economy. When I read about air travel and climate impacts, the information is complicated. Often the discussion ends with the admission that there are not obvious options to make ...
The Greenhouse Effect Lab
... of the thermal radiation emitted by the land and ocean is absorbed by the atmosphere, including clouds, and reradiated back to Earth. This is called the greenhouse effect. Through a physical process, the Earth’s greenhouse effect warms the surface of the planet. Without the natural greenhouse effect ...
... of the thermal radiation emitted by the land and ocean is absorbed by the atmosphere, including clouds, and reradiated back to Earth. This is called the greenhouse effect. Through a physical process, the Earth’s greenhouse effect warms the surface of the planet. Without the natural greenhouse effect ...
Recent Warming of Antarctic Bottom Water in the South Atlantic
... Friday Harbor Laboratories, San Juan Island, WA ...
... Friday Harbor Laboratories, San Juan Island, WA ...
HOVO
... Maybe a little anecdote may help clarify my point. In the 1990s I was involved with an international research programme CLIVAR, which stands for Climate Variability and Predictability. The objectives of this programme were to UNDERSTAND and PREDICT climate TO THE EXTENT POSSIBLE. I attended many mee ...
... Maybe a little anecdote may help clarify my point. In the 1990s I was involved with an international research programme CLIVAR, which stands for Climate Variability and Predictability. The objectives of this programme were to UNDERSTAND and PREDICT climate TO THE EXTENT POSSIBLE. I attended many mee ...
Prof. Wescott (Part I) ( )
... •NASA and Columbia University Earth Institute research finds that human-made greenhouse gases have brought the Earth’s climate close to critical tipping points, with potentially dangerous consequences for the planet. (NASA) •The average temperature of the earth's surface has risen by 0.74 degrees C ...
... •NASA and Columbia University Earth Institute research finds that human-made greenhouse gases have brought the Earth’s climate close to critical tipping points, with potentially dangerous consequences for the planet. (NASA) •The average temperature of the earth's surface has risen by 0.74 degrees C ...
Slide 1
... •NASA and Columbia University Earth Institute research finds that human-made greenhouse gases have brought the Earth’s climate close to critical tipping points, with potentially dangerous consequences for the planet. (NASA) •The average temperature of the earth's surface has risen by 0.74 degrees C ...
... •NASA and Columbia University Earth Institute research finds that human-made greenhouse gases have brought the Earth’s climate close to critical tipping points, with potentially dangerous consequences for the planet. (NASA) •The average temperature of the earth's surface has risen by 0.74 degrees C ...
Mazmanian Presentation
... • The Act was passed by Democratic legislature and signed into law by a Republican Governor. • It is extraordinary in its comprehensive, economy-wide coverage calling for a multifaceted effort of greenhouse gas reductions by the business and people of California. • It calls for reducing GHG emission ...
... • The Act was passed by Democratic legislature and signed into law by a Republican Governor. • It is extraordinary in its comprehensive, economy-wide coverage calling for a multifaceted effort of greenhouse gas reductions by the business and people of California. • It calls for reducing GHG emission ...
`Do You Still Believe in Global Warming?` Billboards Hit Chicago
... The other study reported the number of times global warming alarmists and realists appeared in academic journals, and found that a small group of alarmists appeared hundreds of times. That doesn’t mean they are more likely to be right. In fact, there are many reasons why realists appear to be publis ...
... The other study reported the number of times global warming alarmists and realists appeared in academic journals, and found that a small group of alarmists appeared hundreds of times. That doesn’t mean they are more likely to be right. In fact, there are many reasons why realists appear to be publis ...
Lesson 2 Planning
... 1815- major volcanic eruption (Tambora in Indonesia)- followed by cooling? 1850- Industrial Revolution Cretaceous- an era in which mean global temperature may have bee 1-‘C warmer than they are today, and deep-water temperature may have been 8’C warmer. The last period of the Mesozoic era, the creta ...
... 1815- major volcanic eruption (Tambora in Indonesia)- followed by cooling? 1850- Industrial Revolution Cretaceous- an era in which mean global temperature may have bee 1-‘C warmer than they are today, and deep-water temperature may have been 8’C warmer. The last period of the Mesozoic era, the creta ...
Anthropogenic Global Warming: A Skeptical Point of View
... known that ice and snow act to reflect result in creating or enhancing feedbacks. more sunlight off a surface than if it With some feedbacks or physical were bare. A weather forecaster knows mechanisms there is uncertainty as to how that snow covered areas will experience they work. The oceans and a ...
... known that ice and snow act to reflect result in creating or enhancing feedbacks. more sunlight off a surface than if it With some feedbacks or physical were bare. A weather forecaster knows mechanisms there is uncertainty as to how that snow covered areas will experience they work. The oceans and a ...
Global warming hiatus
A global warming hiatus, also sometimes referred to as a global warming pause or a global warming slowdown, is a period of relatively little change in globally averaged surface temperatures. In the current episode of global warming many such periods are evident in the surface temperature record, along with robust evidence of the long term warming trend.The exceptionally warm El Niño year of 1998 was an outlier from the continuing temperature trend, and so gave the appearance of a hiatus: by January 2006 assertions had been made that this showed that global warming had stopped. A 2009 study showed that decades without warming were not exceptional, and in 2011 a study showed that if allowances were made for known variability, the rising temperature trend continued unabated. There was increased public interest in 2013 in the run-up to publication of the IPCC Fifth Assessment Report, and despite concerns that a 15-year period was too short to determine a meaningful trend, the IPCC included a section on a hiatus, which it defined as a much smaller increasing linear trend over the 15 years from 1998 to 2012, than over the 60 years from 1951 to 2012. Various studies examined possible causes of the short term slowdown. Even though the overall climate system had continued to accumulate energy due to Earth's positive energy budget, the available temperature readings at the earth's surface indicated slower rates of increase in surface warming than in the prior decade. Since measurements at the top of the atmosphere show that Earth is receiving more energy than it is radiating back into space, the retained energy should be producing warming in at least one of the five parts of Earth's climate system.A July 2015 paper on the updated NOAA dataset cast doubt on the existence of this supposed hiatus, and found no indication of a slowdown. This analysis incorporated the latest corrections for known biases in ocean temperature measurements, and new land temperature data. Scientists working on other datasets welcomed this study, though the view was expressed that the short term warming trend had been slower than in previous periods of the same length.