IPCC Report
gregladen | April 10, 2017About once a day, someone tells me that human caused climate change is not real because this or that thing in the latest report by the Intergovernmental Panel on Climate Change (IPCC) contradicts something I, or some other scientists or science writer, has said.
I've noticed an uptick in references to the IPCC report by those intent on denying the reality of climate change. This even happened at recent congressional hearings, where "expert witnesses" made similar claims.
How can that be? How can the flagship scientific report on climate change, the objective source of information about the…
gregladen | November 26, 2013Published on Nov 21, 2013
The IPCC has produced a video on its Fifth Assessment Report (AR5). The first part on the Working Group I contribution to AR5 is now available. The other parts will be released with the successive approvals of the other two Working Group contributions and the Synthesis Report in the course of 2014.
gregladen | September 30, 2013Paul Douglas from Weather Nation (and elsewhere):
For the 5th time in 23 years, the world's leading climate scientists have released an update on the state of the climate. WeatherNation Chief Meteorologist reviews the highlights plus shares the panel's predictions for the rest of the century.
gregladen | September 27, 2013Each of these graphs from the IPCC policy summary shows the global surface temperature relative to a 1961-1990 arbitrary baseline. The upper graph shows the annual average, and thus captures a sense of variation reflecting a wide range of causes, but with a general trend from the early 20th century to the preset of increasing temperatures. The second graph shows the same data but using a decadal average. Notice that when you squint your eyes, turn your head sideways, and take some LSD you can see a highly significant decline, hiatus, pause, or even cooling in global temperatures that, if…
gregladen | September 27, 2013Eight hundred and thirty or more authors and editors representing eighty five countries wrote this thing. It is about climate change, and reflects pretty much all of the current (except the most most current of course) peer reviewed literature on climate change, with the intention of providing the basis for governmental policy related to this topic.
The most important conclusion of this report is that humans have caused the warming of the planet that has been observed over the last several decades. More exactly, human activity has led to both cooling and warming effects, with the net…