Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

EARLINET, European research for climatic change analysis

21.05.2008
- Experts from 12 European countries collaborate in an observation network that allows a better knowledge of particles (aerosol) present in the continent’s atmosphere (industrial, urban concentrations, Saharan dust, volcanic, forest fires, etc.).

- They have prepared a wide database on atmospheric aerosol’s vertical structure and its temporal development, essential to carry out a climatologic study of atmospheric aerosol, as well as to validate the new devices installed in artificial satellites.

- This is an example of base science generator of indispensable knowledge for the advance of atmospheric science and climatic change prevention.

The prediction of future climate is, undoubtedly, one of the main challenges of our time, marked by the concern about climatic change and its effects, such as drought and natural disasters, poles thaw, rise of the sea level, diseases, etc. Climatic change poses different scientific challenges to researchers from all over the world, which must be tackled with new ideas, reliable data and advanced instruments.

Science must provide conclusive answers, for example, about the climatic effects of human pollution, the deforestation of wide regions of the globe or forest fires. Rigorous, fast and conclusive answers are not possible when scientific challenges have planetary dimensions.

As regards atmospheric physics’s knowedge ans its possible effects on climatic change, research groups from all Europe have developed the project EARLINET-ASOS (European Aerosol Research Lidar Network: Advanced Sustainable Observation System). 25 laboratories, located in 12 European countries, carry out weekly measures simultaneously to obtain indispensable data for the carrying out of climatic studies: the analysis of the presence in the atmosphere of aerosol’s particles and the determination of its origin.

One of these stations is located in Granada (CEAMA - Andalusian Centre for the Environment), directed by Prof Lucas Alados Arboledas.

“Atmospheric aerosol represents one of the main uncertainties in the estimation of the radiative forcing of climate and, therefore, for the prediction of climatic change –says Alados-. Aerosols disturb solar radiation in the atmosphere and influence the properties of clouds and rainfall in a way we are still ignorant of”.

A few years ago, research works were focused on getting to know the distribution of aerosol particles on a worldwide scale, as well as the properties of the different types of aerosol. The advances were very relevant, but measurements from land, planes or satellite could only measure the quantity, but not its vertical distribution at different heights, a key question, for example, to get to know its effect on climate, which is generally opposite due to the increase of greenhouse gases. This is, whereas global warming is associated with greenhouse gases increase, atmospheric aerosol can contribute to a cooling of the earth’s system.

Lidar Network and CALIPSO

“EARLINET (2000) and EARLINET-ASOS (2006) are allowing an improvement in the preparation of a wide quantitative and statistically significant database on aerosol’s vertical structure and its temporal development in Europe”, says Alados. Satellite CALIPSO was launched to the space in April 2006, which contained the first space lidar station, able to offer a global vision of the vertical structure of aerosol and the clouds over our planet, necessary to express climatic forecasts.

However, if the 25 European lidar stations allow to offer data on a continental scale, they are also essential to validate CALIPSO’s global data. The mission will take place all through three years, and will provide essential information on aerosol’s properties. Together with other satellites of the “A-Train” constellation, CALIPSO will help to increase our knowledge about climatic system and the possible climatic change.

While CALIPSO is being validated, the observations of EARLINET all over Europe are collecting and processing essential data to get to know and assess the climatic impact of the masses of air with mineral dust arriving from Sahara to Europe, of European forest fires, the differences between the pollution produced in highly industrialized regions of Eastern Europe, the anthropogenic pollution in underdeveloped areas, the anthropogenic pollution which reaches Europe from North America, etc.

12 countries, 25 scientific groups

Thousands of yearly observaciones have turned EARLINET into an essential information source for the future of meteorological science, the assessment of climtic change and a better knowledge of our environment. The stations of the EARLINET consortium can be found from the Mediterranean to the Arctic Polar Circle, from the marine environments of mild climates to Arctic weather, from continental climate to semiarid regions, clean airs of sparsely populated areas to regions highly polluted due to urban concentrations and industry.

References: Prof Lucas Alados Arboledas. Phone numbers. 958241000-31169; 958244024. E-mail. alados@ugr.es

EARLINET: the project was funded between 2000 and 2003 by the European Commission. The EARLINET-ASOS project is funded since 2006 by the European Commission under grant RICA-025991.

CALIPSO data were obtained from the NASA Langley Research Center Atmospheric Science Data Center.

Publications related to the article:
-Lidar Technologies, Techniques, and Measurements for Atmospheric Remote Sensing III, edited by Upendra N. Singh, Gelsomina Pappalardo (2007).

-Atmospheric Environment, 42 (2008) 2668–2681

Antonio Marín Ruiz | alfa
Further information:
http://prensa.ugr.es/prensa/research/index.php

More articles from Ecology, The Environment and Conservation:

nachricht Value from wastewater
16.08.2017 | Hochschule Landshut

nachricht Species Richness – a false friend? Scientists want to improve biodiversity assessments
01.08.2017 | Carl von Ossietzky-Universität Oldenburg

All articles from Ecology, The Environment and Conservation >>>

The most recent press releases about innovation >>>

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

Im Focus: Fizzy soda water could be key to clean manufacture of flat wonder material: Graphene

Whether you call it effervescent, fizzy, or sparkling, carbonated water is making a comeback as a beverage. Aside from quenching thirst, researchers at the University of Illinois at Urbana-Champaign have discovered a new use for these "bubbly" concoctions that will have major impact on the manufacturer of the world's thinnest, flattest, and one most useful materials -- graphene.

As graphene's popularity grows as an advanced "wonder" material, the speed and quality at which it can be manufactured will be paramount. With that in mind,...

Im Focus: Exotic quantum states made from light: Physicists create optical “wells” for a super-photon

Physicists at the University of Bonn have managed to create optical hollows and more complex patterns into which the light of a Bose-Einstein condensate flows. The creation of such highly low-loss structures for light is a prerequisite for complex light circuits, such as for quantum information processing for a new generation of computers. The researchers are now presenting their results in the journal Nature Photonics.

Light particles (photons) occur as tiny, indivisible portions. Many thousands of these light portions can be merged to form a single super-photon if they are...

Im Focus: Circular RNA linked to brain function

For the first time, scientists have shown that circular RNA is linked to brain function. When a RNA molecule called Cdr1as was deleted from the genome of mice, the animals had problems filtering out unnecessary information – like patients suffering from neuropsychiatric disorders.

While hundreds of circular RNAs (circRNAs) are abundant in mammalian brains, one big question has remained unanswered: What are they actually good for? In the...

Im Focus: RAVAN CubeSat measures Earth's outgoing energy

An experimental small satellite has successfully collected and delivered data on a key measurement for predicting changes in Earth's climate.

The Radiometer Assessment using Vertically Aligned Nanotubes (RAVAN) CubeSat was launched into low-Earth orbit on Nov. 11, 2016, in order to test new...

Im Focus: Scientists shine new light on the “other high temperature superconductor”

A study led by scientists of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science in Hamburg presents evidence of the coexistence of superconductivity and “charge-density-waves” in compounds of the poorly-studied family of bismuthates. This observation opens up new perspectives for a deeper understanding of the phenomenon of high-temperature superconductivity, a topic which is at the core of condensed matter research since more than 30 years. The paper by Nicoletti et al has been published in the PNAS.

Since the beginning of the 20th century, superconductivity had been observed in some metals at temperatures only a few degrees above the absolute zero (minus...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Call for Papers – ICNFT 2018, 5th International Conference on New Forming Technology

16.08.2017 | Event News

Sustainability is the business model of tomorrow

04.08.2017 | Event News

Clash of Realities 2017: Registration now open. International Conference at TH Köln

26.07.2017 | Event News

 
Latest News

A Map of the Cell’s Power Station

18.08.2017 | Life Sciences

Engineering team images tiny quasicrystals as they form

18.08.2017 | Physics and Astronomy

Researchers printed graphene-like materials with inkjet

18.08.2017 | Materials Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>