This blog may help people explore some of the 'hidden' issues involved in certain media treatments of environmental and scientific issues. Using personal digital images, it's also intended to emphasise seasonal (and other) changes in natural history of the Swansea (South Wales) area. The material should help participants in field-based modules and people generally interested in the natural world. The views are wholly those of the author.
Saturday, 8 April 2023
Surface Appearances
The National Oceanic and Atmospheric Administration (NOaa) has recorded an average world ocean surface temperature of more than 21 degrees Centigrade. This is an 'all-time high', since their satellite records began ( https://www.theguardian.com/environment/2023/apr/08/headed-off-the-charts-worlds-ocean-surface-temperature-hits-record-high). Worryingly, this NOaa record temperature, is after 3 years of La Nina conditions across the tropical Pacific. To an extent, La Nina conditions dampen global heating. They counter, the impact of the currently-rising 'greenhouse gas' emissions. It's scary, that ocean surface temperature have continued to rise at this time. Scientists, however, are now predicting a late 2023 potential El Nino pattern in the tropical Pacific. In contrast to La Nina, El Nino conditions exacerbate the impact of global heating on ocean surface temperatures. This will inevitably provide extra power to megastorms, like hurricanes. Droughts and floods will also routinely follow. The rising ocean surface temperature will also increase ice sheet melting rate, elevating sea levels. It's also really bad news for marine life (and the people dependent on it). Warmer water contains less oxygen and 'reliable' ocean currents will be disrupted.
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