The cause of sea water warming up

Scientists have long believed that climate change is the cause of rising temperatures in Pacific waters in North America over the past century.

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However, the research results published in the journal of the American Academy of Sciences on September 22 showed that it is the natural change in the direction and velocity of the ocean wind that is the "culprit" causing warming up in the oceans.

Scientists from the University of Washington's Oceanic and Atmospheric Research Institute and the US National Oceanic and Atmospheric Administration (NOAA) have compared heat and air pressure across oceans' surfaces. From 1900 to 2012. Air pressure is a base data to measure wind speed and determine wind direction.

Photo: spectrum.ieee.org

According to the report, during this period, the surface heat of the seas from Hawaii to Alaska as well as the lower seas such as British Columbia, Washington, Oregon and California rose by about 1 degree F.

Scientists point out that the direction of wind and wind change makes the ocean's heat background change. In particular, the stronger the wind, the faster the evaporation rate at sea. The wind from the south brings a warmer heat background, while the north wind brings a cooler heat.

However, the results of this study after being published have led many scientists to doubt. Some meteorological experts expressed suspicion when the research team did not provide graphic analysis and detailed statistics. Many other experts questioned how the research team confirmed the change in wind direction and velocity is natural and not due to climate change.

Explaining this, lead researcher Jim Johnstone stated that the period of rapid warming of sea water from 1920-1940 occurred before the current global carbon emissions were difficult to control.

Meanwhile, the period of cool sea water up from 1998-2013 also occurs when the average global heat is almost very high. According to Mr. Johnstone, the change in direction and wind velocity occurs before the changes in the temperature of the oceans surface for about four months. This shows that wind is the main factor causing temperature changes.

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