A Massive Dust Cloud Is Moving From the Sahara to the U.S. This Week
A massive cloud of dust from the Sahara Desert is expected to reach the Southeastern U.S. by Wednesday.
While the weather pattern driving the cloud is not unusual, the amount of dust is, according to KSLNewsRadio. National Aeronautics and Space Administration (NASA) Colonel Doug Hurley snapped a photo from on board the International Space Station, as NDTV reported.
"We flew over this Saharan dust plume today in the west central Atlantic," he tweeted Sunday. "Amazing how large an area it covers!"
We flew over this Saharan dust plume today in the west central Atlantic. Amazing how large an area it covers! https://t.co/JVGyo8LAXI— Col. Doug Hurley (@Col. Doug Hurley)1592768779.0
The dust is part of something called the Saharan Air Layer (SAL), a mass of dry, dusty air that travels over the North Atlantic every three to five days between mid June and mid August, according to National Oceanic and Atmospheric Administration (NOAA) information reported by KSL.
"Every so often, when the dust plume is large enough and trade winds set up just right, the dust can travel thousands of miles across the Atlantic and into the US." CNN Meteorologist Haley Brink said.
The current plume emerged off of North Africa last weekend and has already traveled more than 3,000 miles to reach the eastern Caribbean Sea, The Weather Channel reported.
Ok, last dust pic for today and this one is perhaps the most incredible yet. The comparison photos were sent to me… https://t.co/ZGUEu33e2p— Mark Sudduth (@Mark Sudduth)1592780353.0
It covers an area larger than the lower 48 states and Western Europe.
The dust is expected to travel more than 5,000 miles to reach the U.S., according to CNN. But its effects for the country will mostly be positive: brilliant sunsets and suppressed hurricane activity.
A computer model forecast of atmospheric dust for the next 10 days. The plume of Saharan dust is expected to move o… https://t.co/RY57M1ODJg— NWS Eastern Region (@NWS Eastern Region)1592597655.0
The sunsets are because the tiny dust particles tens of thousands of feet in the air filter the sun's rays at the beginning and end of the day. They also cause a blue sky at midday to have a milky sheen.
The hurricane suppression is because tropical storms don't do well with dry air.
"The SAL can have a significant negative impact on tropical cyclone intensity and formation," Jason Dunion explained for NOAA. "Its dry air can act to weaken a tropical cyclone by promoting downdrafts around the storm, while its strong winds can substantially increase the vertical wind shear in and around the storm environment. It is not yet clear what effect the SAL's dust has on tropical cyclone intensity, though some recent studies have suggested that it can actually impact the formation of clouds."
However, the cloud could worsen air quality in some places, which could make symptoms worse for people suffering from respiratory conditions like asthma, The Weather Channel pointed out.
By Kimberly Nicole Pope
During this year's Davos Agenda Week, leaders from the private and public sectors highlighted the urgent need to halt and reverse nature loss. Deliberate action on the interlinked climate and ecological crises to achieve a net-zero, nature-positive economy is paramount. At the same time, these leaders also presented a message of hope: that investing in nature holds the key to ensuring economic and social prosperity and resilience.
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While some mainstream environmental organizations welcomed Tuesday's introduction of the CLEAN Future Act in the House of Representatives, progressive green groups warned that the bill falls far short of what's needed to meaningfully tackle the climate crisis—an existential threat they say calls for bolder action like the Green New Deal.
<div id="25965" class="rm-shortcode" data-rm-shortcode-id="6116a1c2b1b913ad51c3ea576f2e196c"><blockquote class="twitter-tweet twitter-custom-tweet" data-twitter-tweet-id="1366827205427425289" data-partner="rebelmouse"><div style="margin:1em 0">BREAKING: Rep @FrankPallone just released his CLEAN Future Act — which he claims to be an ambitious bill to combat… https://t.co/M7nR0es196</div> — Friends of the Earth (Action) (@Friends of the Earth (Action))<a href="https://twitter.com/foe_us/statuses/1366827205427425289">1614711974.0</a></blockquote></div>
<div id="189f0" class="rm-shortcode" data-rm-shortcode-id="aa31bacec80d88b49730e8591de5d26d"><blockquote class="twitter-tweet twitter-custom-tweet" data-twitter-tweet-id="1366863402912657416" data-partner="rebelmouse"><div style="margin:1em 0">The CLEAN Future Act "fails to grasp the fundamental truth of fighting climate change: We must stop extracting and… https://t.co/yREn6Qx9tn</div> — Food & Water Watch (@Food & Water Watch)<a href="https://twitter.com/foodandwater/statuses/1366863402912657416">1614720605.0</a></blockquote></div>
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They are among the largest trees in the world, descendants of forests where dinosaurs roamed.
Pixabay / Simi Luft<p><span>Until recently, measuring these trees meant scaling their 80 meter high trunks with a tape measure. Now, a team of scientists from University College London and the University of Maryland uses advanced laser scanning, to create 3D maps and calculate the total mass.</span></p><p>The results are striking: suggesting the trees <a href="https://www.nature.com/articles/s41598-020-73733-6" target="_blank" rel="noopener noreferrer">may be as much as 30% larger than earlier measurements suggested.</a> Part of that could be due to the additional trunks the Redwoods can grow as they age, <a href="https://www.nature.com/articles/s41598-020-73733-6" target="_blank" rel="noopener noreferrer">a process known as reiteration</a>.</p>
New 3D measurements of large redwood trees for biomass and structure. Nature / UCL<p>Measuring the trees more accurately is important because carbon capture will probably play a key role in the battle against climate change. Forest <a href="https://www.wri.org/blog/2020/09/carbon-sequestration-natural-forest-regrowth" target="_blank">growth could absorb billions of tons</a> of carbon dioxide from the atmosphere each year.</p><p>"The importance of big trees is widely-recognised in terms of carbon storage, demographics and impact on their surrounding ecosystems," the authors wrote<a href="https://www.nature.com/articles/s41598-020-73733-6" target="_blank"> in the journal Nature</a>. "Unfortunately the importance of big trees is in direct proportion to the difficulty of measuring them."</p><p>Redwoods are so long lived because of their ability to <a href="https://www.nature.com/articles/s41598-020-73733-6" target="_blank" rel="noopener noreferrer">cope with climate change, resist disease and even survive fire damage</a>, the scientists say. Almost a fifth of their volume may be bark, which helps protect them.</p>
Carbon Capture Champions<p><span>Earlier research by scientists at Humboldt University and the University of Washington found that </span><a href="https://www.sciencedirect.com/science/article/pii/S0378112716302584" target="_blank" rel="noopener noreferrer">Redwood forests store almost 2,600 tonnes of carbon per hectare</a><span>, their bark alone containing more carbon than any other neighboring species.</span></p><p>While the importance of trees in fighting climate change is widely accepted, not all species enjoy the same protection as California's coastal Redwoods. In 2019 the world lost the equivalent of <a href="https://www.worldwildlife.org/threats/deforestation-and-forest-degradation" target="_blank" rel="noopener noreferrer">30 soccer fields of forest cover every minute</a>, due to agricultural expansion, logging and fires, according to The Worldwide Fund for Nature (WWF).</p>
Pixabay<p>Although <a href="https://c402277.ssl.cf1.rackcdn.com/publications/1420/files/original/Deforestation_fronts_-_drivers_and_responses_in_a_changing_world_-_full_report_%281%29.pdf?1610810475" target="_blank" rel="noopener noreferrer">the rate of loss is reported to have slowed in recent years</a>, reforesting the world to help stem climate change is a massive task.</p><p><span>That's why the World Economic Forum launched the Trillion Trees Challenge (</span><a href="https://www.1t.org/" target="_blank" rel="noopener noreferrer">1t.org</a><span>) and is engaging organizations and individuals across the globe through its </span><a href="https://uplink.weforum.org/uplink/s/uplink-issue/a002o00000vOf09AAC/trillion-trees" target="_blank" rel="noopener noreferrer">Uplink innovation crowdsourcing platform</a><span> to support the project.</span></p><p>That's backed up by research led by ETH Zurich/Crowther Lab showing there's potential to restore tree coverage across 2.2 billion acres of degraded land.</p><p>"Forests are critical to the health of the planet," according to <a href="https://www.1t.org/" target="_blank" rel="noopener noreferrer">1t.org</a>. "They sequester carbon, regulate global temperatures and freshwater flows, recharge groundwater, anchor fertile soil and act as flood barriers."</p><p><em data-redactor-tag="em" data-verified="redactor">Reposted with permission from the </em><span><em data-redactor-tag="em" data-verified="redactor"><a href="https://www.weforum.org/agenda/2021/03/redwoods-store-more-co2-and-are-more-enormous-than-we-thought/" target="_blank">World Economic Forum</a>.</em></span></p>
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