spaceweb@oulu.fi - last update: 14 January 1999, 0950 UT (RR) . Term 'global change' is used to describe the changes of the large scale weather systems on Earth , and especially the surface temperature increase, by man-made increase of atmospheric CO 2 . ... It is the last point that is of importance for space physics, since it is possible that also the changes in Sun 's activity could be causing some changes in terrestrial climate. ... Space Physics Text Book of Oulu ...

The images were derived from full disk scans by CDS on 23 April 1998. As the temperature increases, the radiation comes from higher layers of the solar atmosphere, or corona, and is more strongly associated with solar activity. ... Scientists use images like these to probe the temperature structure of the solar atmosphere. A View of the Chromosphere & Corona . ... A time-line of the corona over a few days i n 1998 and from 1996 to 1998 . ...

Main Sections LabIR main page . ... LabIR staff . ... Tirgo Page . ... The TIRGO NIR photometer uses a single InSb detector with cooled low-noise amplification electronics. ... Results of the TIRGO calibration program: 1986-1987" L.K. Hunt, G.Calamai, and E. Oliva Arcetri Technical Report No. ... Near-infrared photometry at the Gornergrat Infrared Telescope" L.K. Hunt Arcetri Technical Report No. ... Manuale del nuovo sistema di controllo del Fotometro del TIRGO" C.Baffa Arcetri Technical Report No. ...

... The Sun is the closest star to us, and a regular object in our Galaxy. Solar activity manifests itself, primarily, in solar flares - episodic explosive energy release in the form of electromagnetic radiation and high energy particles (electrons and protons). The nature of the flares is related to cyclic variations of global and local magnetic fields in the atmosphere of the Sun. ... Such formations are called active regions. ...

home education > activities . ... Quick math activity that asks students to calculate scale models of a binary star system with a black hole in it. [h] . ... Students use a radiometer and a light bulb with a dimmer switch to make connections between the temperature, color, and radiation output of a star. ... This demonstration, similar to the above, from the Exploratorium Snack-book of science activities, lets students demonstrate how molecules scatter light and change the colors of the beam. [m,h] . ...

... Sun as a Source of Perturbation of Near-Earth Medium and Solar System Bodies. ... Tidal Influence of the Sun on the Earth. ... Structure of Solar Atmosphere. ... Observing Manifestations of Solar Activity. ... Forecasting of Solar Activity. ... Influence of Solar Activity on the Structure and Dynamics of Terrestrial Atmosphere. ... Problem of Mechanism of Solar-Troposphere Connections. ... Phenomenons in Auroral Zones of the Earth as a Result of the Sun Influence on the Terrestrial Atmosphere. ...

Weekly Bulletin on Solar and Geomagnetic Activity Highlights on 17 - 23.08.2015, Forecast on 24 - 31.08.2015, Carrington Rotation 2167 (07,30.09.2015) SUNSPOT-FORMING ACTIVITY OF THE SUN WAS AT THE LOW LEVEL ON 17.08 AND THE AVERAGE LEVEL IN OTHER DAYS, GRADUALLY INCREASING DUE TO GROWTH AND COMPLI- CATION OF AR12403. ... THE AVERAGE LEVELS OF THE SUNSPOT-FORMING ACTIVITY IS EXPECTED ON THE NEXT WEEK. ... ACCORDING TO THE DATA FROM SOHO AND STEREO CORONOGRAPHS, >20 CMEs HAVE BEEN OBSERVED. ...

Microsymposium 34, MS058, 2001 ANOMALIES OF THE MOON'S THERMAL EMISSION IN THE IR SPECTRAL RANGE (10.5 - 12.5 micron). ... Sternberg State Astronomical Institute, Moscow, 119899, Russia, pugach@sai.msu.ru Summary: New satellite measurements of the lunar-surface radiation temperature were used to construct the spatial angular function of thermal radiation of the Moon in the infrared (10.5-12.5 micron) spectral range. ... These thermal anomalies are observed only in the limited range of phase angles. ...

Geomagnetic storms and substorms are a natural hazard similar to hurricanes, floods etc. ... Solar and geomagnetic activity also probably influences the Earth's climate and human health. ... Under southward directed IMF the Earth's magnetosphere is open to input from the solar wind flow. ... Since practical importance of solar wind measurements was recognized, a number of approaches was developed for prediction of the geomagnetic activity basing on the solar wind data. ...

Variations of total ozone content and lower ozone stratosphere temperature in Antarctic Region during winter-spring