Aurora: Nature's Most Spectacular Light Show
First, I would like to thank all of you AZs, who visit to my
blog and keep visiting regularly to hear out my views, reviews, experiences.
This article is special because with your motivation, I have crossed the century
of writing articles. Yes, this is 101 articles. Some are good and some are not,
I admit. But, as my understanding to writing will improve, conveying my message
to you will also improve. It is a continuous process. As AToZ stands this is
not about particular area but rather collaboration of different topics and why
not our daily life is not based on single subject. We feel, experience and work
on different areas each day so why limit ourselves. So, on this day, I thought
to write about something which is makes this occasion heavenly. And what is
more heavenly than phenomenon which is as rare it is and most spectacular in
its own way, the northern lights.
1) What are Northern Lights?
I always want to visit the location where I can see northern
lights or more scientifically Aurora. Aurora is natures wonder in true sense.
Aurora is visible in two specific parts of northern and southern hemisphere.
That is why the northern lights are called
'Aurora borealis’ and
'Aurora Australis' in the south. Though they have more common or local names
like polar lights, northern or southern lights. It really amazes me that
something that destructive and display such a magnificent theatrical that you
watch it in awe.
2) What cause such phenomenon?
Why I called it destructive phenomenon? Let’s see how Auroras
are formed. This has to do with Sun and
Earth's Magnetosphere. So, when Sun discharge a huge amount of Plasma or
scientifically Coronal Mass Ejection(CME), which is 4th state of matter is
essentially a chunk of charged particles. These charged particles are carried
by solar wind to earth's path in 2-3 days.
Now, earth’s core has molten iron
rotating inside like a giant motor which creates a magnetic shield around our
earth. When charged particles from the plasma which are electrons and protons
comes in earth, they are mostly deflected by our magnetic shield. But, this
shield is weaker on the either poles due to this some of the free charged
particles enters magnetic field and smash into our earths exosphere or thermosphere
which is the outermost layers of our atmosphere at blinding speed. They lost
their energy and ionize and excite the atmospheric elements like oxygen and
nitrogen atoms, this cause the emission of varying colors. Mostly in shades of
pale green produced by oxygen molecule collision at about 60 miles altitude and
pink to Shades of red produced by oxygen molecule at 200 miles altitude, blue,
and violet by nitrogen sometimes.
Historically, the discovery of connection between the solar
spots and the Auroras dated back to 1880 and it was established around late
1950s
3)
What are the best places to visit?
From tourism point of view this phenomenon attracts many travelers
and is one of the major tourist attraction but due to its limited location and
unpredictability made it hard to spot. There are few places in both Northern
and Southern Hemisphere where these lights are visible like.
Northern Hemisphere
New Orleans in the
western hemisphere,
Northwestern parts of Canada, particularly the Yukon, Nunavut,
Northwest Territories
Alaska,
Southern tip of Greenland
Iceland,
Northern coast of
Norway, especially area around Tromso
Coastal waters, north of Siberia.
And, Northern Sweden's Abisko National Park as it is direst place in Sweden
and have most clear nights
Southern Hemisphere
Antarctica
Southern Indian Ocean
And sometimes New Zealand and Tasmania
4) Tourism Tips
1. Northern Lights is
natural phenomenon there for unpredictable. So, plan to visit for destination
as well. So that you can enjoy the place as well.
2. Go to locations which are not too dense to avoid light
pollution
3. Plan according to forecast and solar activity which reach its
peak in every 11 years approximately. Last peak was 2013.
4. Look for the local weather forecast and avoid cloudy seasons.
For example, Winter and springtime are generally less cloudy than autumn,
around the northern lights region, so plan your trip between December and
April.
5. Due to difficulty inn reaching locations to view aurora Australis.
Northern lights are more famous
6. Some local hotels can arrange a wake-up call for Aurora, just
make sure to ask for it at reception for night staff to inform you.
7.There is a reduction of Aurora sightings and is expected to
reduce over the next decade by scientists in some parts of aurora belt but Northern
Norway seems to be less effected. So, choose the location wisely.
8. plan to watch the sky between 10 p.m. and 2 a.m. local time
or the dark hours. The aurora can last about 30 minutes, and occur in every two
hours cycle depending on the Solar activity.
5) Track the Forecast
Like you plan for any trip based on the season and local
weather. this trip should also be planned according to the forecast provided by
local Geophysical Institute like http://www.gi.alaska.edu/AuroraForecast. The
Arctic circle as polar weather which is very unpredictable. Lookout for
sunshine, clouds, rain, sleet, hail, snow and high winds as they can all happen
in same day.
I admit the phenomenon of which images are this beautiful, now
imagine what the actual experience would be in the chilling freezing nights in
ice watching the waves and drama of these lights. As if whole environment come
to life.
For those of us who cannot visit these far far away locations
The Canadian Space Agency offers a live feed of the skies above Yellowknife, in
Canada's Northwest Territories:
http://www.asc-csa.gc.ca/eng/astronomy/auroramax/.
Footnotes
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Credits -
References -
Northern Lights:
https://www.northernlightscentre.ca/northernlights.html
Aurora:
https://en.wikipedia.org/wiki/Aurora
NORTHERN LIGHTS:
https://www.visitnorway.com/things-to-do/nature-attractions/northern-lights/
Aurora Forecast:
http://www.aurora-service.org/aurora-forecast/
The
northern lights, one of several astronomical phenomena called polar lights
(aurora Polaris), are shafts or curtains of colored light visible on occasion
in the night sky.: https://www.loc.gov/rr/scitech/mysteries/northernlights.html
The Best Places (and
Time) to See the Northern Lights:
https://www.space.com/32601-where-to-see-northern-lights.html
5 Things No One Ever
Tells You About the Northern Lights: https://luxeadventuretraveler.com/northern-lights/
Images - Pixabay
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