- 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. email@example.comEARLINET: 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:
-Atmospheric Environment, 42 (2008) 2668–2681
Antonio Marín Ruiz | alfa
Invasive Insects Cost the World Billions Per Year
04.10.2016 | University of Adelaide
Malaysia's unique freshwater mussels in danger
27.09.2016 | The University of Nottingham Malaysia Campus
Physicists from the University of Würzburg have designed a light source that emits photon pairs. Two-photon sources are particularly well suited for tap-proof data encryption. The experiment's key ingredients: a semiconductor crystal and some sticky tape.
So-called monolayers are at the heart of the research activities. These "super materials" (as the prestigious science magazine "Nature" puts it) have been...
Ultrafast lasers have introduced new possibilities in engraving ultrafine structures, and scientists are now also investigating how to use them to etch microstructures into thin glass. There are possible applications in analytics (lab on a chip) and especially in electronics and the consumer sector, where great interest has been shown.
This new method was born of a surprising phenomenon: irradiating glass in a particular way with an ultrafast laser has the effect of making the glass up to a...
Terahertz excitation of selected crystal vibrations leads to an effective magnetic field that drives coherent spin motion
Controlling functional properties by light is one of the grand goals in modern condensed matter physics and materials science. A new study now demonstrates how...
Researchers from the Institute for Quantum Computing (IQC) at the University of Waterloo led the development of a new extensible wiring technique capable of controlling superconducting quantum bits, representing a significant step towards to the realization of a scalable quantum computer.
"The quantum socket is a wiring method that uses three-dimensional wires based on spring-loaded pins to address individual qubits," said Jeremy Béjanin, a PhD...
In a paper in Scientific Reports, a research team at Worcester Polytechnic Institute describes a novel light-activated phenomenon that could become the basis for applications as diverse as microscopic robotic grippers and more efficient solar cells.
A research team at Worcester Polytechnic Institute (WPI) has developed a revolutionary, light-activated semiconductor nanocomposite material that can be used...
14.10.2016 | Event News
14.10.2016 | Event News
12.10.2016 | Event News
28.10.2016 | Power and Electrical Engineering
28.10.2016 | Physics and Astronomy
28.10.2016 | Life Sciences