Some commenters on my previous blog post, Net Zero CO2 Emissions: A Damaging and Totally Unnecessary Goal, were dubious of my claim that nature will continue to remove CO2 from the atmosphere at about the same rate even if anthropogenic emissions decrease…or even if they were suddenly eliminated.Rather than appeal to the simple CO2 budget model I created for that blog post, let’s look at the published data from the 123 (!) authors the IPCC relies upon to provide their best estimate of CO2 … [Read more...]
Net Zero CO2 Emissions: A Damaging and Totally Unnecessary Goal
The goal of reaching “Net Zero” global anthropogenic emissions of carbon dioxide sounds overwhelmingly difficult. While humanity continues producing CO2 at increasing rates (with a temporary pause during COVID), how can we ever reach the point where these emissions start to fall, let alone reach zero by 2050 or 2060?What isn’t being discussed (as far as I can tell) is the fact that atmospheric CO2 levels (which we will assume for the sake of discussion causes global warming) will start to fall … [Read more...]
Spencer vs. Schmidt: My Response to RealClimate.org Criticisms
EN: Dr. Roy Spencer serves thoughtfully on the Cornwall Alliance Board. What follows is a response to Gavin Schmidt’s blog post at RealClimate.org entitled Spencer’s Shenanigans in which he takes issue with my claims in Global Warming: Observations vs. Climate Models. As I read through his criticism, he seems to be trying too hard to refute my claims while using weak (and even non-existent) evidence.To summarize my claims regarding the science of global warming:In Gavin’s post, he makes the … [Read more...]
‘Demographic Warming’: Humans Increasingly Choose to Live Where It’s Warmer
This is the second of a series of articles in which Cornwall Alliance board member and senior fellow Dr. Roy W. Spencer explains the importance of distinguishing urban heat island effect from global temperature increase and of recognizing that by choosing to live in warmer regions of the world and in cities rather than in cooler and rural or wilderness areas, people demonstrate their preference for warmer temperatures. You can find the first article here, and the second here. and the third … [Read more...]
Examples from our New UAH Urban Heat Island Dataset
This is the second of a series of articles in which Cornwall Alliance board member and senior fellow Dr. Roy W. Spencer explains the importance of distinguishing urban heat island effect from global temperature increase and of recognizing that by choosing to live in warmer regions of the world and in cities rather than in cooler and rural or wilderness areas, people demonstrate their preference for warmer temperatures. You can find the first article here, and the second here.Since few people who … [Read more...]
A New Global Urban Heat Island Dataset: Global Grids of the Urban Heat Island Effect on Air Temperature, 1800-2023
This is the second of a series of articles in which Cornwall Alliance board member and senior fellow Dr. Roy W. Spencer explains the importance of distinguishing urban heat island effect from global temperature increase and of recognizing that by choosing to live in warmer regions of the world and in cities rather than in cooler and rural or wilderness areas, people demonstrate their preference for warmer temperatures. You can find the first article here. As a follow-on to our paper submitted on … [Read more...]
New paper submission: Urban heat island effects in U.S. summer temperatures, 1880-2015
This is the first of a series of articles in which Cornwall Alliance board member and senior fellow Dr. Roy W. Spencer explains the importance of distinguishing urban heat island effect from global temperature increase and of recognizing that by choosing to live in warmer regions of the world and in cities rather than in cooler and rural or wilderness areas, people demonstrate their preference for warmer temperatures.After years of dabbling in this issue, John Christy and I have finally … [Read more...]
SITYS: Climate Models Do Not Conserve Mass or Energy
One of the most fundamental requirements of any physics-based model of climate change is that it must conserve mass and energy. This is partly why I (along with Danny Braswell and John Christy) have been using simple 1-dimensional climate models that have simplified calculations and where conservation is not a problem.Changes in the global energy budget associated with increasing atmospheric CO2 are small, roughly 1% of the average radiative energy fluxes in and out of the climate system. So, … [Read more...]
UAH Global Temperature Update for July, 2023: +0.64 deg. C
New Record High Temperatures and a Weird MonthJuly 2023 was an unusual month, with sudden warmth and a few record or near-record high temperatures.Image: Creative Commons under UnsplashSince the satellite record began in 1979, July 2023 was:These results suggest something peculiar is going on. It’s too early for the developing El Nino in the Pacific to have much effect on the tropospheric temperature record. The Hunga Tonga sub-surface ocean volcano eruption and its “unprecedented” production of … [Read more...]
UAH Global Temperature Update for June, 2023: +0.38 deg. C
The Version 6 global average lower tropospheric temperature (LT) anomaly for June 2023 was +0.38 deg. C departure from the 1991-2020 mean. This is statistically unchanged from the May 2023 anomaly of +0.37 deg. C.The linear warming trend since January, 1979 remains at +0.13 C/decade (+0.12 C/decade over the global-averaged oceans, and +0.18 C/decade over global-averaged land).Various regional LT departures from the 30-year (1991-2020) average for the last 18 months … [Read more...]
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