Author Archives: WeatherGuys Editor

Why does the rate for change of day length vary?

We define the length of the day as the time between sunrise and sunset, so that we can apply some simple mathematics.

Atmospheric conditions can make the actual sunrise and sunset vary slightly from the calculated times. As the Earth moves around the Sun, the length of the day changes. Continue reading

Category: Meteorology, Seasons

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Why should we be concerned about the Arctic climate?

Changes in the Arctic have global implications. The global average temperature is warming but the air temperatures in the Arctic are increasing twice as fast or possibly faster.

The year 2019 will go down as the second-lowest minimum extent of sea ice. Sea ice is bright and reflects about 80% of the sunlight that falls on it, helping to keep the surface cold. Continue reading

Category: Climate, Meteorology

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What is the status of the ozone hole?

Ozone occurs about 18 miles above the Earth’s surface and is both caused by and provides protection from damaging ultraviolet energy emitted by the sun.

The development of an atmospheric “ozone layer” allowed life to move out of the oceans and onto land. Continue reading

Category: Meteorology, Seasons

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When is the autumnal equinox?

This morning we officially entered fall as the autumnal equinox occurred at 2:50 a.m.

That means that today, in common with every location on Earth, we will enjoy exactly 12 hours of daylight and 12 hours of night. Continue reading

Category: Meteorology, Seasons

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What is the hurricane cone of uncertainty?

Starting in the 1950s and up until the 1980s, meteorologists forecast the path of hurricanes using statistical prediction based on past data and current climatological data.

Today, weather computer models are primarily used for the forecasting. Continue reading

Category: Meteorology, Severe Weather, Tropical

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