Climate Archives

April 12, 2022April 12, 2022 by Nancy Atkinson

Because of Extreme Drought, Lake Powell is Barely a Lake Anymore

This Copernicus Sentinel-2 image allows us a wider view of Lake Powell and its dwindling water levels amidst the climate crisis. Contains modified Copernicus Sentinel data (2022), processed by ESA.

The two largest reservoirs in the United States are now at their lowest levels since they were first created. After several decades of drought – with the past two years classified as intense drought in the US Southwest — both Lake Powell and Lake Mead are shrinking. Recent satellite images show just how dramatic the changes have been, due to the ongoing the climate crisis..

March 11, 2022March 8, 2024 by Matt Williams

The IPCC Releases its 2022 Report on Climate Change, in Case you Needed Something Else to Worry About

Since 1988, the Intergovernmental Panel on Climate Change (IPCC) was formed and tasked with advancing knowledge of humanity’s impact on the natural environment. Beginning in 1990, they have issued multiple reports on the natural, political, and economic impacts Climate Change will have, as well as possible options for mitigation and adaptation. On Feb. 27th, the IPCC released the second part of its Sixth Assessment Report (AR6) – “Impacts, Adaptation, and Vulnerability” – and the outlook isn’t good!

March 9, 2022March 9, 2022 by Evan Gough

How did Earth go From Molten Hellscape to Habitable Planet?

An artist's impression of the Hadean eon. Image Credit: By Tim Bertelink - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=48916334

Earth formed from the Sun’s protoplanetary disk about 4.6 billion years ago. In the beginning, it was a molten spheroid with scorching temperatures. Over time, it cooled, and a solid crust formed. Eventually, the atmosphere cooled, and life became a possibility.

But how did all of that happen? The atmosphere was rich in carbon, and that carbon had to be removed before the temperature could drop and Earth could become habitable.

Where did all the carbon go?

February 18, 2022February 18, 2022 by Evan Gough

As Temperatures Rise, Antarctica is Turning Green

Signy Island in the South Orkney Islands. Image Credit: By Ben Tullis from Cambridge, United Kingdom - Signy, the base and the bay, CC BY 2.0, https://commons.wikimedia.org/w/index.php?curid=5878735

The global climate is warming, and Earth’s polar regions are feeling the effects. A new study of the South Orkney Islands shows that the region has warmed significantly since the 1950s. The rise in warming in the South Orkneys exceeds the overall global warming.

As the islands warm, plant life is spreading.

January 10, 2022January 10, 2022 by Evan Gough

The Early Earth was Really Horrible for Life

The Blue Marble image of Earth from Apollo 17. Credit: NASA

Earth has had a long and complex history since its formation roughly 4.5 billion years ago. Initially, it was a molten ball, but eventually, it cooled and became differentiated. The Moon formed from a collision between Earth and a protoplanet named Theia (probably), the oceans formed, and at some point in time, about 4 billion years ago, simple life appeared.

Those are the broad strokes, and scientists have worked hard to fill in a detailed timeline of Earth’s history. But there are a host of significant and poorly-understood periods in the timeline, lined up like targets for the scientific method. One of them concerns UV radiation and its effects on early life.

A new study probes the effects of UV radiation on Earth’s early life-forms and how it might have shaped our world.

December 15, 2021December 15, 2021 by Nancy Atkinson

The Recent Killer Tornado’s Track is Visible From Space

On December 12, 2021, the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Aqua satellite acquired this natural-color image of the tornado track across western Kentucky near Mayfield. This area endured some of the worst damage of the fierce storm front. Credit: NASA/NOAA.

During the night of December 10, 2021, severe weather tore through several US states, Arkansas, Illinois, Kentucky, Mississippi, Missouri and Tennessee. At least 70 tornado-like events were reported, and one storm cell was tracked on radar for approximately four hours as it traveled for more than 400 km (250 miles.)

While the destruction these storms left behind is visible even from space, the heartbreaking devastation on the ground is sobering; over 100 people killed, with hundreds more injured.

December 13, 2021December 13, 2021 by Matt Williams

One Feature Mars has That we Don’t: Polar Megadunes

For fans of astrophotography, Kevin M. Gill needs no introduction. Even if you’re not up on the latest astronomical news and developments, chances are you’ve still seen some of his images over the years. From beautiful artist renditions to breathtaking photographs of far-off planets, Gill has covered it all. Among the latest images available on his official Flickr page are pictures of a unique feature on Mars: the Chasma Boreale Megadunes!

November 26, 2021November 26, 2021 by Matt Williams

The Severe Pacific Northwest Flooding Seen From Space

The State of Washington and the Province of BC are in a state of emergency following days of severe wind, rain, and flooding. The situation began when an “atmospheric river” (a plume of moisture) extended over the Pacific Northwest, triggering severe rainfall that caused already-rising rivers to overflow. This led to blocked roads, mudslides, fallen bridges, and thousands of animals drowning in farmland areas.

This extensive damage was photographed from space by Earth observation satellites, one of which was the European Space Agency’s (ESA) Copernicus Sentinel mission and the International Space Station (ISS). These images captured the extent of the floods in the Nooksack and Fraser River valleys this week, which both spilled over their banks this week, leading to washed-out roads and forcing the evacuation of thousands of people.

November 1, 2021November 5, 2021 by Evan Gough

Scientists Simulate the Climate of Arrakis. It Turns Out Dune is a Pretty Realistic Exoplanet

Is the planet Arrakis realistic? Image Credit: By The Central Intelligence Agency - The World Factbook - Algeria, Public Domain, https://commons.wikimedia.org/w/index.php?curid=29196928

Science fiction author Frank Herbert is renowned for the richly-detailed worlds he created. None of his work is more well-known than “Dune,” which took him six years to complete. Like his other work, Dune is full of detail, including the description of planet Dune, or as the Fremen call it, Arrakis.

Dune is an unforgiving desert world that suffers powerful dust storms and has no rainfall. Scientists who specialize in modelling climates set out to see how realistic Dune is compared to exoplanets. Their conclusion?

Frank Herbert did a great job, considering he created Dune in the 1960s.

September 28, 2021September 29, 2021 by Matt Williams

How Much Carbon Dioxide Snow Falls Every Winter on Mars?

Mars’ south polar ice cap. Credit: ESA / DLR / FU Berlin /

Like Earth, Mars experiences climatic variations during the course of a year because of the obliquity of its rotational axis. This leads to the annual deposition/sublimation of the CO2 ice/snow, which results in the formation of the seasonal polar caps. Similarly, these variations in temperature result in interaction between the atmosphere and the polar ice caps, which has a seasonal effect on surface features.

On Mars, however, things work a little differently. In addition to water ice, a significant percentage of the Martian polar ice caps are made up of frozen carbon dioxide (“dry ice”). Recently, an international team of scientists used data from NASA’s Mars Global Surveyor (MGS) mission to measure how the planet’s polar ice caps grow and recede annually. Their results could provide new insights into how the Martian climate varies due to seasonal change.