by K. Richard, October 8, 2018 in NoTricksZone
A new paper documents “remarkably different” land temperatures from one instrumental data set to another. In some regions there is as much as an 0.8°C conflict in recorded temperature anomalies for CRU, NASA, BEST, and NOAA. The relative temperature trend differences can reach 90% when comparing instrumental records. Consequently, the uncertainty in instrumental temperature trends — “0.097–0.305°C per decade for recent decades (i.e., 1981–2017)” — is as large or larger than the alleged overall warming trend itself for this period.
by David Middleton, October 4, 2018 in WUWT
95% of the model runs predicted more warming than the RSS data since 1988… And this is the Mears-ized RSS data, the one in which the measurements were influenced to obtain key information (erase the pause and more closely match the surface data).
Their “small discrepancy” would be abject failure in the oil & gas industry.
The observed warming has been less than that expected in a strong mitigation scenario (RCP4.5).
Output of 38 RCP4.5 models vs observations. The graph is originally from Carbon Brief. I updated it with HadCRUT4, shifted to 1970-2000 baseline, to demonstrate the post-El Niño divergence.
by Anthony Watts, September 28, 2018 in WUWT
These results come from the SABER instrument onboard NASA’s TIMED satellite. SABER monitors infrared emissions from carbon dioxide (CO2) and nitric oxide (NO), two substances that play a key role in the energy balance of air 100 to 300 kilometers above our planet’s surface. By measuring the infrared glow of these molecules, SABER can assess the thermal state of gas at the very top of the atmosphere–a layer researchers call “the thermosphere.”
When the thermosphere cools, it shrinks, literally decreasing the radius of Earth’s atmosphere. This shrinkage decreases aerodynamic drag on satellites in low-Earth orbit, extending their lifetimes. That’s the good news. The bad news is, it also delays the natural decay of space junk, resulting in a more cluttered environment around Earth.
by Dr. S. Lüning and Prof. F. Vahrenholt, August 19, 2018 in NoTricksZone
Temperatures can be measured from the ground and from satellites. Satellite data have two versions, UAH and RSS. The version of UAH (University of Alabama, Huntsville) makes a solid impression. The RSS version shows larger deviations and suggests a stronger warming.
Doping the data
Both datasets surely get their data from similar satellites. The explanation lies in a “post-processing” of the measured values by the RSS group. In the chart below you can see the old version in red.
Global temperature based on RSS satellite measurements. From Climate4You Newsletter June 2018.
by Judith Curry, June 23, 2018 in ClimateEtc.
Assuming that the uncertainty in GIA adjustments are ‘in the noise’ of global sea level rise may not be entirely justified. The adjustments to the satellite data that emerged in the discussion between Morner and Nerem do not inspire confidence in the estimate of sea level rise from satellite data, and the low level of stated uncertainty strains credulity.
See also here
by F. Bosse and F. Vahrenholt in P. Gosselin, May 25, 2018 NoTricksZone
The sun was inactive in April, as we currently find ourselves in the minimum between solar cycle (SC) 24 and the coming solar cycle 25.
The recorded mean sunspot number (SSN) for April was 8.9, which is only 28% of what is usual 113 months into a solar cycle. In April, 16 days were spotless. The following chart shows sunspot activity (…)
by Lovell, A.M. et al., 2017 in CO2Science, May 24, 2018
In describing their findings, Lovell et al. state that “between 1972 and 2013, 36% of glacier termini in the entire study area advanced and 25% of glacier termini retreated, with the remainder showing no discernible change outside of the measurement error (± 66 m or ± 1.6 m yr-1) and classified as ‘no change'” (see figure below). Although there were some regional differences in glacier termini changes, these regions over the last four decades were more closely linked to non-climatic drivers, such as terminus type and geometry, than any obvious climatic or oceanic forcing.”
See aslo : Terrifying Times For Climate Alarmists
by Tony Heller, May 22, 2018 in TheDeplorableClimateScienceBlog
Settled science at NASA means constantly rewriting the past. Here are a few of the NASA Reykjavik, Iceland temperature graphs I have captured over the past six years.
by Christy J.R. et al., April 6, 2018, in CO2Science
Monitoring temperature and creating regional and global temperature data sets is a tricky business. There are many factors that can induce spurious trends in the data; and there are multiple protocols to follow to ensure their proper construction. Consequently, many people (including scientists) have found themselves wondering which of all the temperature data sets is the most accurate for use in determining the impact of rising greenhouses gases on atmospheric temperature? Thanks to the recently published work of Christy et al. (2018), we now have a pretty good idea as to the answer.
by Anthony Watts, April 6, 2018 in WUWT
Weather Satellite Wanders Through Time, Space, Causing Stray Warming to Contaminate Data
In the late 1990s, the NOAA-14 weather satellite went wandering through time and space, apparently changing the record of Earth’s climate as it went.
Designed for an orbit synchronized with the sun, NOAA-14’s orbit from pole to pole was supposed to cross the equator at 1:30 p.m. on the sunlit side of the globe and at 1:30 a.m. on the dark side, 14 times each day. One of the instruments it carried was a microwave sounding unit (MSU), which looked down at the world and collected data on temperatures in Earth’s atmosphere and how those temperatures changed through time.
by JoNova, March 18, 2018
A funny thing happens when you line up satellite and surface temperatures over Australia. A lot of the time they are very close, but some years the surface records from the Australian Bureau of Meteorology (BOM) are cooler by a full half a degree than the UAH satellite readings. Before anyone yells “adjustments”, this appears to be a real difference of instruments, but solving this mystery turns up a rather major flaw in climate models (…)
by Willis Eschenbach, March 24, 2018 in WUWT
I got to thinking about the “hiatus” in warming in the 21st Century, and I realized that the CERES satellite dataset covers the period since the year 2000. So I’ve graphed up a few views of the temperature changes over the period of the CERES record, which at present is May 2000 to February 2017. No great insights, just a good overview and some interesting findings.
by Antony Watts, January 3, 2017 in WUWT
From the University of Alabama, Huntsville.
Global Temperature Report: December 2017
Global climate trend since Nov. 16, 1978: +0.13 C per decade
December temperatures (preliminary)
Global composite temp.: +0.41 C (about 0.74 degrees Fahrenheit) above 30-year average for December.
Northern Hemisphere: +0.50 C (about 0.90 degrees Fahrenheit) above 30-year average for December.
Southern Hemisphere: +0.33 C (about 0.59 degrees Fahrenheit) above 30-year average for December.
Tropics: +0.26 C (about 0.47 degrees Fahrenheit) above 30-year average for November.
by UAH and Dr. J. Christy in A. Watts, December 4, 2014 in WUWT
The average global temperature drop between October and November, 2017, tied for the fifth largest one-month-to-the-next drop in the 39-year satellite temperature record, according to Dr. John Christy, director of the Earth System Science Center (ESSC) at The University of Alabama in Huntsville. Compared to seasonal norms, the average temperature around the globe fell 0.27 C (almost 0.49 degrees F) between October and November. (The largest drop was from January to February 2013, when the global average temperature fell 0.32 C.)
by Dr. Sebastian Lüning and Prof. Fritz Vahrenholt, November 15, 2017 in NoTricksZone
After a peak in 2012 the level went down by about 10 cm by mid 2017. It is very much related to natural variations, in sync with the El Ninos (low levels) and La Ninas (high levels).
So what remains of the climate change horror stories in connection to the Fiji Islands? (…)