CO2 Not A Threat To Oceans

by Dr. J. Lehr, June 26, 2020 in ClimateChangDispatch

For the past three decades, the public has been taught by the news media and the folks who make a living composing mathematical equations they claim to simulate how our planet’s climate operates, that our oceans are in jeopardy.

They have all told you one of the biggest falsehoods in human history.

They say that carbon dioxide, the only reason man can inhabit Earth, is causing the planet to heat up to a dangerous level and the oceans will become unlivable for marine life.

There is no proof of these lies whatever. Civilization has generally been most prosperous under warmer than colder conditions.

The Ocean acidificationfrom carbon dioxide emissions preached by the scaremongers would require an impossible ten-fold decrease in the alkalinity of surface waters.

Even if atmospheric CO2 concentrations triple from todays four percent of one percent, which would take about 600 years, todays surface pH of 8.2 would plateau at 7.8, still well above neutral 7.

Ocean health has improved as a result of greater CO2, as it feeds phytoplankton that stimulates the ocean’s food chain.

CO2 allows phytoplankton such as algae, bacteria, and seaweed to feed the rest of the open ocean food chain. As carbon dioxide moves through this food web, much of it sinks or is transported away from the surface.

A high surface pH allows the ocean to store 50 times more CO2 than the atmosphere. Digestion of carbon at lower depths allows for storage there for centuries.

CMIP6 Climate Models Show 50% More Warming Than Observations Since 1979

by Roy W. Spencer, June 26, 2020 in ClimateChangeDispatch

Those who defend climate model predictions often produce plots of observed surface temperature compared to the models which show very good agreement.

Setting aside the debate over the continuing adjustments to the surface temperature record which produce ever-increasing warming trends, let’s look at how the most recent (CMIP6) models are doing compared to the latest version of the observations (however good those are).

First, I’d like to explain how some authors get such good agreement between the models and observations. Here are the two “techniques” they use that most annoy me.

  1. They look at long periods of time, say the last 100+ years. This improves the apparent agreement because most of that period was before there was substantial forcing of the climate system by increasing CO2.
  2. They plot anomalies about a common reference period but do not show trend lines. Or, if they show trend lines, they do not start them at the same point at the beginning of the record. When you do this, the discrepancy between models and observations is split in half, with the discrepancy in the latter half of the record having the opposite sign of the discrepancy in the early part of the record. They say, “See? The observed temperatures in the last few decades nearly match the models!”

In the following plot (which will be included in a report I am doing for the Global Warming Policy Foundation) I avoid both of those problems.

During the period of strongest greenhouse gas forcing (since 1979), the latest CMIP6 models reveal 50% more net surface warming from 1979 up to April 2020 (+1.08 deg. C) than do the observations (+0.72 deg. C).


Continuer la lecture de CMIP6 Climate Models Show 50% More Warming Than Observations Since 1979

Siberian Heatwave–Climate Or Weather?

by P. Homewood, June 27, 2020 in NotaLotofPeoppleKnowThat

The Conversation has now got involved in the Arctic heatwave scare, with this article by Jonathan Bamber, Professor of Physical Geography, University of Bristol :

On the eve of the summer solstice, something very worrying happened in the Arctic Circle. For the first time in recorded history, temperatures reached 38°C (101°F) in a remote Siberian town – 18°C warmer than the maximum daily average for June in this part of the world, and the all-time temperature record for the region.

New records are being set every year, and not just for maximum temperatures, but for melting ice and wildfires too. That’s because air temperatures across the Arctic have been increasing at a rate that is about twice the global average.

All that heat has consequences. Siberia’s recent heatwave, and high summer temperatures in previous years, have been accelerating the melting of Arctic permafrost. This is the permanently frozen ground which has a thin surface layer that melts and refreezes each year. As temperatures rise, the surface layer gets deeper and structures embedded in it start to fail as the ground beneath them expands and contracts. This is what is partly to blame for the catastrophic oil spill that occurred in Siberia in June 2020, when a fuel reservoir collapsed and released more than 21,000 tonnes of fuel – the largest ever spill in the Arctic.

So what is wrong with the Arctic, and why does climate change here seem so much more severe compared to the rest of the world?