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  • BIRA-IASB Aerosols & climate
    particles of which the composition form and size are far less known These small droplets play an important role in the physicochemistry of the stratosphere they change its optical characteristics absorption and diffusion of light at their surface they can trigger important chemical reactions in particular the destruction of ozone Stratospheric Aerosols and Polar Stratospheric Clouds The structure of aerosols and their impact on the stratosphere depend on several parameters including the local temperature When temperatures are not too low these particles appear as fine droplets that are known as stratospheric aerosols Read complete article Stratospheric aerosols and polar stratospheric clouds Monitoring the upper atmosphere by satellite Earth s climate is certainly influenced by major volcanic eruptions which are the main responsible for the massive injection of aerosols in the stratosphere In this field BIRA IASB has acquired a very solid expertise in terms of modelling and observing thanks to the GOMOS instrument NRS Climatology BIRA IASB May 2003 C Bingen F Vanhellemont D Fussen S Cherkari At an altitude of about 90 km the general circulation is dominated by gravity waves that reflect climatological disturbances undergone by the lower atmospheric layers one of the many aspects of global changes

    Original URL path: http://www.bira-iasb.be/en/topics/globalchange/aerosols-climate.htm (2016-04-27)
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  • Chemical weather | BIRA-IASB
    operations Data management Chemical weather Meteorological climate Meteorological weather temperature pressure wind direction is familiar to all and contrasts with meteorological climate in short term weather versus long term climate influence Chemical climate From the atmospheric chemistry side the focus has largely been on the chemical climate the long term mean concentrations of important trace gases and aerosols An emerging new focus of study is the chemical weather The tremendous

    Original URL path: http://www.bira-iasb.be/en/topics/naturalhazards/chemicalweather.htm (2016-04-27)
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  • Aerosols & volcanic ash warning | BIRA-IASB
    Volcanic eruptions may eject large amounts of ash aerosols and trace gases such as sulphur dioxide SO2 into the atmosphere These ejecta can have considerable impact on the safety of air traffic and on human health Ground based monitoring is carried out at only a limited number of volcanoes most volcanoes are not monitored on a regular basis in particular the remotely located volcanoes Global observations of SO2 and aerosols derived from satellite measurements in near real time may therefore provide useful complementary information to assess the possible impact of volcanic eruptions on air traffic control and public safety The Support to Aviation Control Service SACS focuses on the timely delivery of SO2 data derived from different satellite instruments Plume of smoke Eyjafjï ll on 15 April 2010 Saeberg Reuters Impact of aerosols on incoming solar radiation During a volcanic eruption sulfuric gasses are injected into the stratosphere where they convert to sulfate aerosols sub micron droplets containing about 75 percent sulfuric acid Following an eruption a large amount of these particles are formed and a large amount of aerosols fall back to the lower layers of the atmosphere This explains why the impact of aerosols on incoming solar radiation

    Original URL path: http://www.bira-iasb.be/en/topics/naturalhazards/aerosols-volcanic-ashwarning.htm (2016-04-27)
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  • What is space weather? | BIRA-IASB
    on Earth they too may cause problems for us humans especially because we are so dependent on satellite technology The effects that these solar storms can cause are usually only relevant for space borne systems but in extreme cases effects may be registered all the way down on Earth Image courtesy of SXT Yohkoh Introduction to Space Weather Space weather services The European Space Weather Portal ESWeP is an integrated

    Original URL path: http://www.bira-iasb.be/en/topics/naturalhazards/spaceweather.htm (2016-04-27)
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  • Mission Scenarios | BIRA-IASB
    scenarios Instrument design and technology Mission operations Data management Mission Scenarios Operational Space Weather Tool SPENVIS is an operational space weather tool of the European Space Agency ESA developed and maintained by BIRA IASB Consisting of a web interface it is used by engineers in defining space missions and designing space instruments It allows an initial analysis of problems associated with the space environment and its effects Martian Radiation Environment

    Original URL path: http://www.bira-iasb.be/en/topics/spacemissions/missionscenarios.htm (2016-04-27)
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  • Instrument design and technology - Engineering | BIRA-IASB
    climate Natural hazards Chemical weather Ozone Aerosols volcanic ash warning UV at the surface Space weather Space missions Mission scenarios Instrument design and technology Mission operations Data management Instrument design and technology Engineering To study the physics and chemistry of the Earth and planetary atmospheres and of the interplanetary space ground based balloon rocket and satellite instruments are used Especially the remote sounding of the chemical composition of atmospheres using

    Original URL path: http://www.bira-iasb.be/en/topics/spacemissions/engineering.htm (2016-04-27)
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  • Mission operations | BIRA-IASB
    has since the launch been the Facility Responsible Centre ESA FRC for the solar observatory installed on an external pallet of the Columbus module Three instruments make up the solar observatory SOLAR payload These three complementary instruments SOVIM SOLSPEC and SOLACES measure with a remarkable degree of accuracy the spectral energy irradiance of the Sun over virtually the entire spectrum Image credits ESA NASA PICARD Scientific Mission Centre In this

    Original URL path: http://www.bira-iasb.be/en/topics/spacemissions/missionoperations.htm (2016-04-27)
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  • Data management | BIRA-IASB
    decisions reveal hitherto undiscovered information and provide supportive evidence in debriefing and decision making processes related to the organisation of space control centre operations CUBIST is an EU funded research project Archiving and processing data centre for an international network of 50 CubeSats QB50 an international network of 50 CubeSats for multi point in situ measurements in the lower thermosphere and re entry research QB50 has the scientific objective to

    Original URL path: http://www.bira-iasb.be/en/topics/spacemissions/datamanagement.htm (2016-04-27)
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