The TMNHA AGM will be held on Wednesday 2nd December 2020 at 3pm at The Manor, 160 Long Road, Eagle Heights.
Please let Marg Eller know by email (margjeffeller [AT] yahoo [DOT] com [DOT] au) if you will be attending so seating can be arranged. RSVP 24th November 2020.
The following walk reports may include locations subject to restricted access. It may not be open to the public and you would not be authorised to visit the location without approval of the landowner. Our walking groups obtain permission where required for these walks.
A giant explosion of magnetic energy from the Sun, called a coronal mass ejection, slams into and is deflected completely by the Earth's powerful magnetic field. The Sun also continually sends out streams of light and radiation energy. Earth's atmosphere acts like a radiation shield, blocking quite a bit of this energy.
Much of the radiation energy that makes it through is reflected back into space by clouds, ice and snow and the energy that remains helps to drive the Earth system, powering a remarkable planetary engine – the climate. It becomes the energy that feeds swirling wind and ocean currents as cold air and surface waters move toward the equator and warm air and water moves toward the poles – all in an attempt to equalize temperatures around the world.
Credit: NASA / GSFC Visualization Center