Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Greening at high latitudes may inhibit the expansion of midlatitude deserts

09.01.2020

Desertification has always been a serious challenge for human beings, especially in arid and semi-arid regions. Projections from CMIP5 support the expansion of arid and semi-arid regions with increasing greenhouse gas concentrations.

Interestingly, besides inducing a stronger greenhouse effect, increasing carbon dioxide is also leading to global vegetation greening, especially in high latitudes, by the fertilization effect.


Schematic diagram of the remote effect of high-latitude greening on midlatitude deserts.

Credit: Yongli He

However, it is still unknown whether greening in high latitudes could affect midlatitude deserts.

In a paper recently published in Atmospheric and Oceanic Science Letters, Dr. Yongli He from the department of Atmospheric Science, Lanzhou University, and his coauthors, try to address this question based on their work on the remote effect of greening in high latitudes.

"We investigated the remote effects of greening at high latitudes by using a two-dimensional energy balance model. We decreased the albedo in high latitudes to represent the greening phenomenon, and then investigated the changes in the boundaries of midlatitude deserts.

We found that the midlatitude deserts retreated significantly at the southern boundary, while the polar ice belts and low-latitude vegetation belts expanded," says Dr. He.

According to this study, high-latitude vegetation greening may inhibit the expansion of midlatitude deserts.

"However, due to the simplification of the two-dimensional energy balance model, the impact of high-latitude vegetation greening on the climate of midlatitude desert regions still needs further study," adds Dr. He.

Media Contact

Zheng Lin
jennylin@mail.iap.ac.cn
86-108-299-5053

 @aasjournal

http://english.iap.cas.cn/ 

Zheng Lin | EurekAlert!
Further information:
http://159.226.119.58/aosl/EN/news/news29.shtml
http://dx.doi.org/10.1080/16742834.2020.1696650

More articles from Earth Sciences:

nachricht Shocked meteorites provide clues to Earth's lower mantle
13.01.2020 | Arizona State University

nachricht Formation of a huge underwater volcano offshore the Comoros
07.01.2020 | GFZ GeoForschungsZentrum Potsdam, Helmholtz Centre

All articles from Earth Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: World Premiere in Zurich: Machine keeps human livers alive for one week outside of the body

Researchers from the University Hospital Zurich, ETH Zurich, Wyss Zurich and the University of Zurich have developed a machine that repairs injured human livers and keep them alive outside the body for one week. This breakthrough may increase the number of available organs for transplantation saving many lives of patients with severe liver diseases or cancer.

Until now, livers could be stored safely outside the body for only a few hours. With the novel perfusion technology, livers - and even injured livers - can now...

Im Focus: SuperTIGER on its second prowl -- 130,000 feet above Antarctica

A balloon-borne scientific instrument designed to study the origin of cosmic rays is taking its second turn high above the continent of Antarctica three and a half weeks after its launch.

SuperTIGER (Super Trans-Iron Galactic Element Recorder) is designed to measure the rare, heavy elements in cosmic rays that hold clues about their origins...

Im Focus: LZH’s MOMA laser ready for the flight to Mars

One last time on Earth it has been turned on in France in December 2019. The next time the MOMA laser developed by the Laser Zentrum Hannover e.V. (LZH) is going into operation will be on Mars. The ExoMars rover into which the laser is integrated has now successfully passed the thermal vacuum tests at Airbus in Toulouse, France.

For 18 days the ExoMars rover Rosalind Franklin was subjected to thermal vacuum tests at Airbus. There, it had to withstand strong changes in temperature and...

Im Focus: Atacama Desert: A newly discovered biocoenosis of lichens, fungi and algae shapes entire landscapes

The Atacama Desert in Chile is the oldest and most arid desert on earth. Organisms living in this area have adapted to the extreme conditions over thousands of years. A research team led by Dr Patrick Jung has now discovered and investigated a previously unknown biocoenosis of lichens, fungi, cyanobacteria and algae. It colonises tiny stones, so-called grit and its need for water is satisfied by fog and dew. These organisms also decompose the rock on and in which they live. The scientists believe that this is how they have shaped the landscape of the Atacama Desert. Their study was published in the renowned scientific journal "Gebiology".

Many desert areas have large black spots in the sand. These spots are mineral deposits, so-called desert varnish. In the Atacama Desert, which can be compared...

Im Focus: Nano antennas for data transfer

For the first time, physicists from the University of Würzburg have successfully converted electrical signals into photons and radiated them in specific directions using a low-footprint optical antenna that is only 800 nanometres in size.

Directional antennas convert electrical signals to radio waves and emit them in a particular direction, allowing increased performance and reduced...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

„Advanced Battery Power“- Conference, Contributions are welcome!

07.01.2020 | Event News

International Coral Reef Symposium 2020 Holds Photo Competition

19.12.2019 | Event News

The Future of Work

03.12.2019 | Event News

 
Latest News

Scientists in Mainz develop a more sustainable photochemistry

14.01.2020 | Life Sciences

Laserphysics: At the pulse of a light wave

13.01.2020 | Physics and Astronomy

New function for potential tumor suppressor in brain development

13.01.2020 | Life Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>