Increased warming in latest generation of climate models likely caused by clouds

As scientists work to determine why some of the latest climate models suggest the future could be warmer than previously thought, a new study indicates the reason is likely related to challenges simulating the formation and evolution of clouds.

Noctilucent Clouds Over London

On June 21st, something rare and magical happened in London. The skies of the great city filled with noctilucent clouds (NLCs). Phil Halper noticed the display, grabbed a camera, and raced from one landmark to another, hurriedly recording pictures like this:

First-time direct proof of chemical reactions in particulates

Paul Scherrer Institute Researchers at the Paul Scherrer Institute PSI have developed a new method to analyse particulate matter more precisely than ever before. With its help, they disproved an established doctrine: that molecules in aerosols undergo no further chemical transformations because they are enclosed in other suspended particulate matter. In the smog chamber at…

One Upside of More CO2: Beautiful Upper Atmospheric Clouds

Reposted from Dr. Roy Spencer’s Blog January 1st, 2020 by Roy W. Spencer, Ph. D. Polar Stratospheric Cloud display (smartphone photo posted by Reddit user Breuuan on Dec. 31, 2019.) Increasing carbon dioxide in the atmosphere will continue to cause upper atmospheric cooling in the 2020s, which will lead to some of the most beautiful…

Ice Nucleating Particles Carried From Below a Phytoplankton Bloom to the Arctic Atmosphere

Paper at Geophysical Research Letters. J. M. Creamean J. N. Cross R. Pickart L. McRaven P. Lin A. Pacini R. Hanlon D. G. Schmale J. Ceniceros T. Aydell N. Colombi E. Bolger P. J. DeMott First published: 15 July 2019 https://doi.org/10.1029/2019GL083039 Abstract and Introduction~ctm Abstract As Arctic temperatures rise at twice the global rate, sea…

Winter monsoons became stronger during geomagnetic reversal

Revealing the impact of cosmic rays on the Earth’s climate Kobe University New evidence suggests that high-energy particles from space known as galactic cosmic rays affect the Earth’s climate by increasing cloud cover, causing an “umbrella effect”. When galactic cosmic rays increased during the Earth’s last geomagnetic reversal transition 780,000 years ago, the umbrella effect…

Electric-blue night clouds are invading the U.S.

Reposted from Dr. Roy Spencer’s Blog I have personally cussed out Dr. Spencer for adding an item to my bucket list which had been almost complete.~ctm June 11th, 2019 by Roy W. Spencer, Ph. D. Over the next few weeks, mid-latitude observers might experience the best noctilucent cloud viewing of their lifetimes. Extremely high-altitude noctilucent…

We now know how insects and bacteria control ice

Proteins help organisms form or inhibit ice crystals University of Utah Contrary to what you may have been taught, water doesn’t always freeze to ice at 32 degrees F (zero degrees C). Knowing, or controlling, at what temperature water will freeze (starting with a process called nucleation) is critically important to answering questions such as…