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Posts tagged "IPCC"

The savage heat waves that struck Australia in 2013 were almost certainly a direct consequence of the human release of greenhouse gases, researchers said Monday. It is perhaps the most definitive statement climate scientists have made that ties a specific weather event to global warming.

Five groups of researchers, using distinct methods, analyzed the heat that baked Australia for much of last year and continued into 2014, shutting down the Australian Open tennis tournament at one point in January. All five came to the conclusion that last year’s heat waves could not have been as severe without the long-term climatic warming caused by human activity.

“When we look at the heat across the whole of Australia and the whole 12 months of 2013, we can say that this was virtually impossible without climate change,” said David Karoly, a climate scientist at the University of Melbourne who led one research team.

One of the most direct and definitive statements from climate scientists to date. More here.

I saw the movie "Cowspiracy" which claims that Animal Agriculture is the largest contributor to climate change -- it contributes 51% of all greenhouse gas emissions. I checked this after the movie and the UN FAO lists it at 11%, but a third party, "World Watch" recalculates it to 51 based on respiration and other factors. I judge the evidence overall to support the treatise that animal ag is unsustainable, but isn't respiration carbon neutral - feed plants store CO2 equal to what cows expel? -PH
climateadaptation climateadaptation Said:

Hi playitbackward,

First, I’m into adaptation - not carbon or emissions nuttery. I help governments reduce risks by changing environmental and development policies. Adaptation is the process of reducing impacts from climate change. It’s basically preventing natural disasters using climate science. Read a short summary here.

That said, the movie is clearly misleading and propagandist (thus the title). It’s not difficult to find the correct sources of information on sources of emissions, primarily of which is the IPCC’s Fifth climate assessment report on mitigation: Climate Change 2014: Mitigation of Climate Change.



Curious about the IPCC’s adaptation report? Here’s a free webinar discussing the report and its implications.

This is the biggest scientific climate change report in all of history. Ever." - Mr. Michel Jarraud World Meteorological Organization

IPCC releases its report on climate impacts. Streaming live now. Here.

Webcast of IPCC press conference (PDF)
YOKOHAMA, Japan, 27 March 2014 – The Intergovernmental Panel on Climate Change (IPCC) is holding a press conference at 08:00 p.m. EST tonight / 09.00 a.m. Yokohama time on Monday 31 March 2014 to present the Summary for Policymakers of the Working Group II contribution to the Fifth Assessment Report.
This press conference will be webcast in English, Japanese and Spanish and can be followed live.
For English go to:
For Japanese go to:
For Spanish go to:
For original go to:

Notes for editors

The IPCC is considering the Working Group II contribution to the Fifth Assessment Report, dealing with impacts, adaptation and vulnerability, in Yokohama, Japan, on 25-29 March 2014. The Summary for Policymakers and full report will be released on 31 March. The full report will be published online in August and in book form a few months later.
The Working Group I contribution, on the physical science basis of climate change, was released on 27 September 2013 and the full report published on 30 January 2014. The Working Group III contribution will be considered by the IPCC in Berlin on 7-11 April 2014. The Fifth Assessment Report will be completed with the Synthesis Report that will be considered by the IPCC in Copenhagen on 27-31 October 2014.

HUGE: IPCC releases Fifth Assessment report! Five years in the making, the report synthesizes the top climate science known to humankind.

Do you know of key journal articles, open access or not, for getting a science inclined person acquainted with the climate change response field? i.e. not focused on super technical details but also not hand waving?
climateadaptation climateadaptation Said:

Hi unstable-equilibria!

Sorry for the epic delay and happy 2014! Go with these three:

  1. Bookmark and read often. It’s written by some of the top climate scientists in the world, and there is nearly zero hand-waving or advocacy. Just the facts.
  2. IPCC Fifth Assessment. Hands down the best climate science on the planet.
  3. U.S. Global Change Research Program (USGCRP). Little known, the USGCRP is the US government’s climate science program. It’s was established by law in 1990. They publish tons of climate science that’s easy to read. Their reports contain great bibliographies, too.

These are the best of the best. There are a ton of rabbit holes to get lost in on the above sites, so I advise taking a gentle-but-steady approach - focus on reading one report per month rather than click click clicking your way around… 

Keep in touch and let me know how it goes over the next year…


On why the LATimes avoids publishing op-eds by climate deniers. Well done, LATimes.

What The Science Says

Surface temperature measurements are affected by short-term climate variability, and recent warming of deep oceans.

Why doesn’t the temperature rise at the same rate that CO2 increases?

The amount of CO2 is increasing all the time - we just passed a landmark 400 parts per million concentration of atmospheric CO2, up from around 280ppm before the industrial revolution. That’s a 42.8% increase.

A tiny amount of CO2 and other greenhouse gases, like methane and water vapour, keep the Earth’s surface 33°Celsius (59.4°F) warmer than it would be without them. We have added 42% more CO2 but that doesn’t mean the temperature will go up by 42% too.

There are several reasons why. Doubling the amount of CO2 does not double the greenhouse effect. The way the climate reacts is also complex, and it is difficult to separate the effects of natural changes from man-made ones over short periods of time.

As the amount of man-made CO2 goes up, temperatures do not rise at the same rate. In fact, although estimates vary - climate sensitivity is a hot topic in climate science, if you’ll forgive the pun - the last IPCC report (AR4) described the likely range as between 2 and 4.5 degrees C, for double the amount of CO2 compared to pre-industrial levels.

So far, the average global temperature has gone up by about 0.8 degrees C (1.4 F).

According to an ongoing temperature analysis conducted by scientists at NASA’s Goddard Institute for Space Studies (GISS)…the average global temperature on Earth has increased by about 0.8°Celsius (1.4°Fahrenheit) since 1880. Two-thirds of the warming has occurred since 1975, at a rate of roughly 0.15-0.20°C per decade.” Source: NASA Earth Observatory

Via SkepticalScience

Must see talk by Dr. Kevin Anderson of the Tyndall Centre for Climate Change Research. He shows how most climate scientists are being disingenuous about the dangers of climate change. That their estimates are far too low due, in part, to the current trend of scientists working with the public (e.g., post-normal science).

The above climate talk is among my my top 10 favorites. It’s also a sobering reality check for the CO2/350 crowd.