by Tony Heller, July 20, 2017 in ClimateChangeDispatch
The Greenland Ice Sheet is gaining near record amounts of ice this year. Very little melting has occurred this summer, which is about to start winding down. Temperatures on the Greenland Ice Sheet have been extremely cold, and broke the all-time record for Northern Hemisphere July cold on July 4, at -33C.
See also DMI
by Robert Lyman, June9, 2017 in FriendsOfScienceCalgary
French version here
Each country is committed “to prepare and maintain successive individual nationally determined contributions (INDCs) that it intends to achieve”, to update these plans every five years and to pursue and report on the related domestic emission reduction measures. After three years, a Party may withdraw from the Agreement with one year’s notice.
There is an unresolved debate as to whether to call COP21 an agreement or a treaty.
by Ph.D. Roy W. Spencer, July 14, 2017
It’s pretty clear that the models are producing too much atmospheric warming compared to satellites, radiosondes (weather balloons), and multi-observational atmospheric reanalyses.
by Dr. J. Wallace III et al., June 2017
Abridged research Report, 30 pages, .pdf
The conclusive findings of this research are that the three GAST data sets are not a valid representation of reality. In fact, the magnitude of their historical data adjustments, that removed their cyclical temperature patterns, are totally inconsistent with published and credible U.S. and other temperature data. Thus, it is impossible to conclude from the three published GAST data sets that recent years have been the warmest ever –despite current claims of record setting warming.
See also here
by Judith Curry, July 15, 2017 in ClimateEtc.
In understanding climate change risk, and deciding on the ‘if’ and ‘what’ of ‘action’, we need to acknowledge that we don’t know how the climate of the 21st century will play out (Deep Uncertainty, folks). Four possibilities:
It is possible that human-caused climate change will be swamped by much larger natural climate variability.
It is possible/plausible that the sensitivity of the climate is on the low end of the IPCC envelope (1.0-1.5C), with a slow creep of warming superimposed on much larger natural variability.
It is possible/plausible that the IPCC projections are actually correct (right for the wrong reasons; too much wrong with the climate models for much credibility, IMO).
It is possible that AGW and natural variability could conspire to cause catastrophic outcomes
by Willis Eschenbach, July 13, 2017 in WUWT
Over at Dr. Curry’s excellent website, she’s discussing the Red and Blue Team approach. If I ran the zoo and could re-examine the climate question, I’d want to look at what I see as the central misunderstanding in the current theory of climate.
This is the mistaken idea that changes in global temperature are a linear function of changes in the top-of-atmosphere (TOA) radiation balance (usually called “forcing”).
by Anthony Watts, July 13, 2017 in WUWT
I thought I’d take a moment from my R&R to write about all the hullabaloo surrounding the calving of the large iceberg off the Larsen C ice shelf in Antarctica. First, a few of the headlines:
LA Times: After Antarctica sheds a trillion-ton block of ice, the world asks: Now what?
The Grauniad: Iceberg twice size of Luxembourg breaks off Antarctic ice shelf
NYT: Warnings from Antarctica
by Ed Hoskins, June1, 2015
When considering the scale of temperature changes that alarmists anticipate because of Man-made Global Warming and their view of the disastrous effects of additional Man-made Carbon Dioxide emissions in this century, it is useful to look at climate change from a longer term, century by century and even on a millennial perspective.
(i) See also here
(ii) See also here
by David Archibald, July 11, 2017 in WUWT
This recent post was on the fact that the Sun’s EUV emissions had fallen to solar minimum-like levels well ahead of solar minimum. The implication was that the Solar Cycle 24/25 minimum was either going to be very deep and prolonged, or that Solar Cycle 24 would be very short, which in turn would be strange for a weak cycle.