Scientists Sound the Alarm: CO2 Levels Race Past Point of No Return
The National Oceanic and Atmospheric Administration (NOAA) reported that carbon dioxide levels in 2016 broke records for the second year in a row with an increase of 3 parts per million (ppm).
The measurements are coming from the Mauna Loa Baseline Atmospheric Observatory in Hawaii and were confirmed by NOAA's Earth System Research Laboratory in Boulder, Colorado. The numbers show that the rate of CO2 in the atmosphere is now at 405.1 ppm, the highest it has been in more than 10,000 years. Pieter Tans, lead scientist of NOAA's Global Greenhouse Gas Reference Network, said the findings are accurate and disturbing.
"The rate of CO2 growth over the last decade is 100 to 200 times faster than what the Earth experienced during the transition from the last Ice Age," Tans said in a press release. "This is a real shock to the atmosphere."
A shock, indeed. An atmosphere of 400 ppm is dubbed the "carbon threshold," a point of no return. To sum it up, levels this high throw the whole balance of the climate cycle into chaos, making it more difficult to predict climate changes and causing sea level rise, severe tropical storms, drought and flooding.
This graph shows the annual mean carbon dioxide growth rates observed at NOAA's Mauna Loa Baseline Atmospheric Observatory. Further information can be found on the ESRL Global Monitoring Division website.NOAA
Emissions from fossil-fuel consumption have remained at historically high levels since 2011, and according to Tans, these emissions are contributing to the dramatic spike in atmospheric CO2 levels, which, up until the industrial revolution in 1760, averaged about 280 ppm.
Even if humans were to stop burning fossil fuels today, the carbon will continue to be trapped for at least the next few decades. Back in October 2016, when levels finally reached the 400 ppm threshold, Tans said, "It's unlikely we'll ever see CO2 below 400 ppm during our lifetime and probably much longer."
The World Health Organization has determined that red meat probably causes colorectal cancer in humans and that processed meat is carcinogenic to humans. But are there other health risks of meat consumption?
EcoWatch Daily Newsletter
Cuttlefish, marine invertebrates related to squids and octopuses, can pass the so-called "marshmallow test," an experiment designed to test whether human children have the self-control to wait for a better reward.
- Hundreds of Fish Species, Including Many That Humans Eat, Are ... ›
- Fish Are Losing Their Sense of Smell - EcoWatch ›
By John R. Platt
The straw-headed bulbul doesn't look like much.
It's less than a foot in length, with subdued brown-and-gold plumage, a black beak and beady red eyes. If you saw one sitting on a branch in front of you, you might not give it a second glance.
Cages line the Malang bird and animal market on Java in 2016. Andrea Kirkby / CC BY-SA 2.0
A kingfisher, looking a little worse for wear, in the Malang bird and animal market in 2016. Andrea Kirkby / CC BY-SA 2.0
- What Does the World Need to Understand About Wildlife Trafficking ... ›
- Brazilian Amazon Has Lost Millions of Wild Animals to Criminal ... ›
By Julián García Walther
One morning in January, I found myself 30 feet up a tall metal pole, carrying 66 pounds of aluminum antennas and thick weatherproofed cabling. From this vantage point, I could clearly see the entire Punta Banda Estuary in northwestern Mexico. As I looked through my binoculars, I observed the estuary's sandy bar and extensive mudflats packed with thousands of migratory shorebirds frenetically pecking the mud for food.
There are currently few Motus stations in Mexico, leading to a large information gap. Julián García Walther / CC BY-ND
Red knots and many other shorebirds travel thousands of miles from breeding grounds in the Arctic (left) to nonbreeding grounds in Latin America (right). Julián García Walther / CC BY-ND
Motus stations require a high vantage point that overlooks estuaries. Julián García Walther / CC BY-ND
Any bird with a transmitter will be picked up if it flies within 12 miles (20 kilometers) of a Motus station. Julián García Walther / CC BY-ND<h2>Tagging Birds</h2><p>The stations alone can't detect these animals. The final step, which will happen in the coming months, is to catch birds and tag them. To do this, our team will set up a soft, spring-loaded net called a whoosh net in sandy areas where the red knots rest above the high-tide line. When birds walk past the net, the crew leader will release the trigger, <a href="https://www.youtube.com/watch?v=vwMiA2iqVc0" target="_blank" rel="noopener noreferrer">safely trapping the birds with the net</a>.</p>
WhooshNetCapture.MTS<span style="display:block;position:relative;padding-top:56.25%;" class="rm-shortcode" data-rm-shortcode-id="6440038cdc58961906f5fa164b457688"><iframe lazy-loadable="true" src="https://www.youtube.com/embed/vwMiA2iqVc0?rel=0" width="100%" height="auto" frameborder="0" scrolling="no" style="position:absolute;top:0;left:0;width:100%;height:100%;"></iframe></span>
The world's oceans and coastal ecosystems can store remarkable amounts of carbon dioxide. But if they're damaged, they can also release massive amounts of emissions back into the atmosphere.