Factors Other Than GHG Forcing Which May Have Caused “Climate Change”

There are some significant changes which have occurred over the last decades and centuries which may well be significant to climate change.

Long Term ENSO Changes

In examining the long term ENSO record implied by the Multi-variate ENSO Index, it’s apparent that there has been a marked decrease of months of La Nina and Strong La Nina and a commensurate increase of months of El Nino and Strong El Nino. What do these trends mean? Are ENSO events strictly internal? Or do they imply changes in net radiance? Is some of the long term temperature trend due to recent decades anomalously El Nino conditions?

The CERES Series [2017]

The latest (through November 2017) update of the Clouds and the Earth’s Radiant Energy System (CERES) data sets are depicted below. The record is still brief and precision and accuracy remain uncertain ( especially for the anisotropic shortwave radiance ). But albedo (calculated as a percentage of mean top of the atmosphere outgoing shortwave radiance as a percentage of mean top of the atmosphere incoming shortwave radiance ) is interesting.  Albedo averages around 29.1% for the period,

Thomas Fire

Some synoptic data from the morning of December 5:

Sensitivity 2016

A simple correlation of global mean surface temperature with change in radiative forcing yields a transient climate sensitivity of about 1.8K per doubling of CO2:

Selected Observations About Tropical Cyclones

I recently looked briefly at both Atlantic, and North East Pacific hurdat data laid over  a selected period ( June through October for the Pacific, August through October for the Atlantic from 1949 through 2016 ) of the ERSSTv4 Sea Surface Temperature data.

US Climate Science Special Report, 2017

In response to the Climate Etc. crowd review of the US Global Change Research Program Climate Science Special Report  (CSSR) Fifth-Order Draft, what follows are brief exceptions to the report:

On the Decrease of Hot and Cold Months in the US

This gallery contains 8 photos.

USHCN

GHCN