There are also places
near the poles of the moon where it stays light for months at a time.
A new study has revealed that ozone levels in the heavily populated lower latitudes don't seem to be recovering as well as
regions near the poles.
This occurs because as warming causes sea
ice near the poles to melt, energy from the sun that would have been reflected away by the ice is instead absorbed by the ocean.
The world's biggest physical changes in the past few years are mostly seen
nearest the poles where climate change has been most extreme.
During a glacial period (ice age) the
oceans near both poles are much colder so the amount of heavy oxygen is very small.
Over the past 3 million years, how did variations in
sunlight near the poles cause sea surface temperatures near the equator to fluctuate?
For example, if a large mass suddenly
appeared near the pole, the continents would shift to move the extra weight toward the equator.
Future investigations could focus on details of how ice sheets
near the poles melted during historic periods of warming.
The second cell consists of air rising in the middle latitudes — about 30 to 60 degrees north and south — and then falling
again near the poles.
This year, we attempted to account for a lower rate of first - year ice
loss near the pole, but our outlook was still significantly lower than the actual minimum.
These patches extend over large areas of 500 to 1000
km near the pole and also give rise to strong northern lights displays.
The layers of dust sediment tend to grow
thicker near the poles where ice deposits remain for longer periods of time.
The tight BC pair is relatively bright in
x-rays near their poles (and seems to be transferring mass), with each star passing in front of the other every three hours.
The number of species increases exponentially from the regions
near the poles across the moderate latitudes and to the equator.
A new study has revealed that ozone levels in the heavily populated lower latitudes don't seem to be recovering as well as
regions near the poles.
«The complete lack of
craters near the poles... People have noticed this for a while, but nobody's had any good explanations,» says Catherine Neish of the Florida Institute of Technology in Melbourne.
Although they found that temperature increases are likely to be
greater near the poles — more than two degrees Celsius (3.6 degrees Fahrenheit)-- northern insects, for one, might benefit from less cold winters and even warmer summers.
Stratospheric temperatures,
particularly near the pole are also significantly influenced by dynamical changes, and in particular, the strength of the polar vortex that is set up every winter at the edge of the polar night.
Consequently, though the sun be ready, vegetation must wait on the coming of the water, and starting
from near the pole, proceeds equatorward.
The one downside of Night Light is that it will taint things like videos you might be watching and as it's linked to sunset and sunrise, for those
living nearer the poles with long dark winters, you might find that Night Light switching on a 4 pm is a little depressing.
These clouds, technically called polar mesospheric clouds, typically
form near the poles and migrate toward the tropics.
The magnetic field lines originate in the Earth's core and
emerge near the poles, where their angle of dip — or inclination — relative to Earth's surface is almost 90 degrees.
«In winter, the freezing Arctic air is normally «locked» by strong circumpolar winds several tens of kilometers high in the atmosphere, known as the stratospheric polar vortex, so that the cold air is
confined near the pole,» says Marlene Kretschmer from PIK, lead - author of the study to be published in the Bulletin of the American Meteorological Society.
If solar activity is a primary forcing, but «geometry and albedo effects would reduce the effects of solar
activity nearer the poles,» as Robert writes, then why are temperatures rising comparatively higher in high latitudes than near the equator?
Colaprete et al in Nature 2005 (subscription required) showed, using the Mars GCM, that the south polar climate is unstable due to the peculiar
topography near the pole, and the current configuration is on the instability border; we therefore expect to see rapid changes in ice cover as the regional climate transits between the unstable states.