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Why is reflectivity of insolation at high latitudes greater in winter than in summer?
Wiki User
∙ 11y ago
It is not. In fact, the Sun's brightness is fairly constant, changing by only a fraction of one percent. In the winter, when the Sun is low on the horizon, the sunlight is spread over a larger area on the Earth, which causes the cooler temperatures.
Wiki User
∙ 14y ago
Wiki User
∙ 16y agoNo, not humidity. The sun is brighter in the [northern hemisphere] winter because the earth is closest to the sun in January. "…For instance, instrumental measurements made from atop Hawaii's Mauna Loa document that the sun is brightest not during June or July, but in mid-January. The reason is that the earth's orbit around the sun is slightly elliptical, or egg-shaped, and the sun is a little off-center of the ellipse (technically, it lies at one focus). The earth is actually closer to the sun, and the sun is thus brighter, during January. It appears dimmer at the northern latitudes because it lies lower in the sky, and its rays must pass through a greater thickness of atmosphere." [1/15/2007]: http://www.gi.Alaska.edu/ScienceForum/ASF7/798.html The "tilt" of the Earth is what causes the wide range in temperature and daylight hours. As the northern hemisphere is tilted towards the sun (when it is the furthest from the sun) it gets more solar radiation - thus higher temperatures and longer days or summer. The opposite is true in the winter as the northern hemisphere is closest to the sun, yet tilted away - thus lower temperatures and shorter days. The most interesting fact in this article is that the tilt changes over 11,000-12,000 years, reversing winter and summer. Crazy!
Wiki User
∙ 12y agoThe sun seems lower in winter because the Earth's axis tilts away from the sun, therefore causing the sun to appear lower in the sky in winter in the northern hemisphere.
Wiki User
∙ 14y agoyes they are but sometimes it is full on!
Wiki User
∙ 13y agoNo, as THE area you live in turns away from THE sun it becomes winter and the suns Ray's then come in from an angle and it needs to warm a larger surface with THE Same amount of solar Ray's.
Wiki User
∙ 11y ago2 ice and snow
Wiki User
∙ 12y agono.
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What season has the highest angle of insolation?
Summer
The receive warm air masses in summer and cold ones in winter?
mid-latitudes
What causes winter snow and summer rain at higher latitudes?
Changes in pressure belts and wind.
How does insolation change with increasing latitude?
Insolation is the amount of the Sun's energy reaching a unit surface area on Earth (for example energy per square metre). Insolation is reduced with increasing latitude, because of the angle at which the Sun's rays hit the surface. The changing angle at which the energy hits the surface means that the energy is spread over a larger area with increasing latitude, North or South. That's the main reason the poles are cold and the equator is hot. In the hemisphere where it's summer, the effect is not so extreme because of the Earth's axial tilt ("towards" the Sun, in that hemisphere). In the winter time at high latitudes the effect is very significant because the Earth is then "tilted away" from the Sun, in that hemisphere.
What is the definition for duration of insolation?
How long it is daylight. In the summer, it's longer than in the winter.The period of time that a surface receives solar energy. The number of daylight hours.
What season has the highest angle of insolation?
Summer
Why are tempatures coder at higher latitudes?
At high latitudes, the Sun never gets very high above the horizon even in the summer, which means that the Sun's light and heat are spread out over a greater area.
What is the Sun radiation levels of new zealand?
The mean annual insolation (general solar radiation) levels for New Zealand range from 11.5-15.5 MJ/m2/day depending on location, and this average can vary from 3.6-25MJ/m2/day from winter to summer and from location to location.For comparison: Arizona has a June insolation of 18MJ/m2/day and New Jersey has a June insolation of 11MJ/m2/dayLooking specifically at UV radiation:New Zealand levels of UV are approximately 40% higher than for similar latitudes in the northern hemisphere, which is about half the UV intensity found at high altitudes in tropical latitudes.
Which month has the greatest duration of insolation for the equator?
The Summer Solstice (June 21).
What latitudes cause warm air masses in summer and cold ones in winter?
Low latitudes
When is the angle of insolation greatest in New York?
Around June 21, the summer solstice.
What climate zone receives the highest insolation?
Averaged through the year, Polar Climates receive the least insolation at the surface. Because these latitudes are tilted further from the sun, solar radiation must pass through more of the atmosphere, and is therefore attenuated.
Which season has least amount of rain in the northern latitudes?
Summer
Why are waters at the equator warmer than waters at higher latitudes?
Because the waters are heated throughout the whole year and not just in the summer as at higher latitudes.
Why are the waters at the equator warmer than waters at higher latitudes?
Because the waters are heated throughout the whole year and not just in the summer as at higher latitudes.
How much space required for 1mw electricity produce from solar plant?
2 acres is ~8000 square meters, which is around 90m2. Of course, this depends on the insolation of the site - how much sun falls on the PV panels - and the efficiency of the panels, which for commercial panels is around 20% as of early 2013. Higher latitudes - closer to the poles - have lower insolation; within temperate regions (20-40º from equator), the range is 3.0-6.6 kWh/day/m2, with winter varying to 50-65% of summer in these ranges. I've not yet been able to determine the relationship between insolation and the area required for 1MW of output from PV.
The receive warm air masses in summer and cold ones in winter?
mid-latitudes
