Sentences with phrase «sunlight at higher latitudes»

So in Greenland it got warmer both because of higher CO2, more sunlight at high latitudes during summer, AND because of increased poleward heat flow.

Not exact matches

Epidemiologists at University of California, San Diego School of Medicine report that persons residing at higher latitudes, with lower sunlight / ultraviolet B (UVB) exposure and greater prevalence of vitamin D deficiency, are at least two times at greater risk of developing leukemia than equatorial populations.

These changes alter the intensity of sunlight hitting the Earth at high latitudes, and so affect the extent of glaciation.

But with more sunlight hitting near the equator than at the poles, it wasn't clear how enough energy could arrive at high latitudes.

Moreover, CDR techniques can affect temperatures via SRM mechanisms too: afforestation — at least in higher latitudes — reduces albedo, producing offsetting warming, while OIF releases dimethyl sulphides which could have a significant impact on temperatures by reflecting incoming sunlight (analogous to, if more short - lived, than the effect of sulphates in the stratosphere).

In contrast, during the summer at high latitudes, the troposphere warms significantly as a result of the long hours of daylight; however, owing to the oblique angle of the sunlight near the poles, the temperatures there remain relatively cool compared with middle latitudes.

Existing projections suggest an increase in primary production at high latitudes such as the Arctic and the Southern Ocean (because the amount of sunlight available for photosynthesis of phytoplankton goes up as the amount of water covered by ice decreases).

The fact that the actual measured planetary warming is less than the lowest IPCC model prediction warming and is found only at high latitudes (which is not predicted by the IPCC models) logically supports the assertion that the planet's response to a change in forcing is to resist the change (negative feedback, planetary clouds in the tropics increase reflecting more sunlight in to space) rather than to amplify the change (positive feedback) due increased water vapour in the atmosphere.

At low angles it begins to reflect a significant portion of incident light but low angles only occur when the sunlight is weak to begin with (near dawn and dusk and at very high latitudesAt low angles it begins to reflect a significant portion of incident light but low angles only occur when the sunlight is weak to begin with (near dawn and dusk and at very high latitudesat very high latitudes).

At the shortest winter day (winter solstice), no sunlight reaches latitudes higher than this.