Contribution Of Anthropogenic CO2 Emissions To Changes In Atmospheric Concentrations

There is no question that anthropogenic CO2 is being absorbed in the atmosphere. However, there is no obvious evidence to support the claim that it is totally responsible for the…

March 2020 CO2 Levels at Mauna Loa Show No Obvious Effect from Global Economic Downturn

From Dr. Roy Spencer’s Blog April 7th, 2020 by Roy W. Spencer, Ph. D. The COVID-19 disease spread is causing a worldwide shutdown in economic activity as business close, airlines…

Is the COVID-19 Economic Downturn Affecting Atmospheric CO2? Mauna Loa Data Say, Not Yet

Reposted from Dr. Roy Spencer’s Blog March 22nd, 2020 by Roy W. Spencer, Ph. D. Some global warming alarmists are celebrating the current economic downturn as just what is needed…

A Simple Model of the Atmospheric CO2 Budget

Reposted from Dr Roy Spencer’s blog April 11th, 2019 by Roy W. Spencer, Ph. D. SUMMARY: A simple model of the CO2 concentration of the atmosphere is presented which fairly…

How to make use of the world’s most accurate surface temperature data

Steve, in Seattle writes: I began this project out of both frustration and a specific curiosity. I have, over the years, studied many excellent articles at WUWT. The articles that…

Mauna Loa Daily Meteorology

Guest Post by Willis Eschenbach As a confirmed data junkie, I’m fond of hourly data. The interesting processes in the climate system unfold on the scale of minutes and hours,…

Dallas Cowboys Stadium Seating and Atmospheric CO2

With the possibility of the coldest Super Bowl ever coming this week, this story about CO2 concentration seemed appropriate. Ryan Scott Welch writes: Anthony as you know, many people don’t…

NSF says biosphere is breathing in CO2 more deeply

Press Release 13-139 Seasonal carbon dioxide range expanding as more is added to Earth’s atmosphere Northern Hemisphere land-based ecosystems “taking deeper breaths,” scientists find Levels of carbon dioxide in the…

Claim: How the IPCC arrived at climate sensitivity of about 3 deg C instead of 1.2 deg C.

UPDATE from Girma: “My title should have been ‘How to arrive at IPCC’s climate sensitivity estimate’ instead of the original” Guest essay by Girma Orssengo, PhD 1) IPCC’s 0.2 deg…

Premature 400 PPM fail-a-bration

It seems we didn’t reach 400PPM last week after all. The data has been revised. Ooops. ‘Carbon dioxide measurements in the Earth’s atmosphere did not break the symbolic milestone of…

The 400 PPM FUD Factory: T-shirts now available

Steve Milloy at JunkScience points out what is above the fold in the NYT today – FUD Fear, Uncertainty, Doubt Here’s his scan of the front page at right: Readers…

Mauna Loa hits 400 PPM of CO2, alarmists wail and gnash teeth, Earth survives

Source: http://www.esrl.noaa.gov/gmd/ccgg/trends/weekly.html Al Gore calls for a day of prayer and reflection, and bothering your neighbor: So please, take this day and the milestone it represents to reflect on the…

How well did Hansen (1988) do?

Guest Post by Ira Glickstein. The graphic from RealClimate asks “How well did Hansen et al (1988) do?” They compare actual temperature measurements through 2012 (GISTEMP and HadCRUT4) with Hansen’s…

A climate of scepticism

Guest post by Philip Lloyd, Energy Institute, CPUT The world is getting a little warmer. Of that there is no doubt. The measurements by which we know that it is…

BEST, Volcanoes and Climate Sensitivity

Guest Post by Willis Eschenbach I’ve argued in a variety of posts that the usual canonical estimate of climate sensitivity, which is 3°C of warming for a doubling of CO2,…

The Climate Swoosh

by J Storrs Hall In my previous post, I argued that sea-surface temperatures hadn’t shown an inflection in the mid-twentieth century, and that the post-50’s rise was essently a land-based…

CO2 increase is "like hitting our ecosystem with a sledge-hammer"

That comes from this statement in the press release: Professor Kennedy said that the doubling of the amount of carbon dioxide in our atmosphere over the past 50 years is…