Moon phases and lunar diet

Lunar phases, moon diet, lunar calendar, info about the moon and the celestial bodies, astronomy and astrology.

Auroral and magnetic activity around the polar caps

Auroral and magnetic activity around the polar caps

Auroral ovals boundaries, geomagnetic storms and energetic activity around the polar poles.

Polar Operational Environmental Satellites

POES - Polar Operational Environmental Satellites

Spacecrafts NOAA POES (ex TIROS) project operates a constellation of weather low-gravitating satellites (850 km) in polar orbits (inclination 98 degrees) around the Earth. Each POES satellite completes roughly 14.1 orbits per day. Тhey regularly observed Space Environment Monitor (SEM). Satellites have a set of tools, for tracking energy charged particles in the vicinity around the Earth.

Aurora in the Northern Hemisphere

North Pole
by SWPC @ NOAA

Aurora in the Southern Hemisphere

South Pole
by SWPC @ NOAA

The two charts above represent the size and position of the oval of Aurora (northern lights) at both poles, extrapolated from measurements at the last crossing of the NOAA POES satellite over the pole.

Red arrow indicates the direction of the moon (lunar meridiyan). The level of activity of Aurora is presented by colors as described in the tape right to the charts, where one unit of the scale is equal to = 1 erg x cm-2 x sec-1.

Aurora in the Northern Hemisphere

North Pole
by NGDC @ NOAA

Aurora in the Southern Hemisphere

South Pole
by NGDC @ NOAA

Aurora in the Northern Hemisphere

North Pole
by APL @ JHU

Aurora in the Southern Hemisphere

South Pole
by APL @ JHU

Today measurements and changes in the conitions around the Earth's polar caps:

Measurements of the energetic particles

Comparison of the relative intensities of NOAA POES energetic particles with the median values detected over the past year. The red box shows the satellite location at the beginning of the day. The red triangle shows its location at the time of the last data download.

Aurora now in the northern hemisphere

Capacity and location of the northern lights in the northern hemisphere now.

Top graph shows the visibility of northern lights in the northern hemisphere. Observation is observed in the moonless sky and low ambient light.

On the chart, with bright colors depicts the polar activity, which is caused by solar wind. Hues ranging from green for very low, almost zero activity to brown/orange for medium, to red for high levels of activity. When the red color is brightly, activity is more intense.

You can easy watch for the auroral polar caps activity via Google Earth software, thanks to the CCMC @ NASA and their useful tool.

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Sources:
Space Weather Prediction Center and National Geophysical Data Center @ NOAA,
APL @ The Johns Hopkins University,
Community Coordinated Modeling Center @ NASA
and Solar Terrestrial Dispatch.