In 2014, the U.S. Postal Service® introduced Global: Sea Surface Temperatures, a new Forever® international rate stamp. These Global Forever® stamps can be used to mail a one-ounce letter to any country to which First-Class Mail International® service is available. This round stamp features a visual representation of our planet's sea surface temperatures. It shows the Earth with North America at the center and parts of South America, Asia, and Europe just visible on the edges, surrounded by vivid bands of color throughout the oceans. The image is one frame in a 1,460-frame animation created from the output of a computer model of Earth's climate by the National Oceanic and Atmospheric Administration's Geophysical Fluid Dynamics Laboratory. The full animation shows how the surface temperatures of the oceans vary seasonally and change over time, and how surface ocean currents and eddies transport heat and water around the globe. This image also combines the depiction of sea-surface temperatures with visible vegetation on the land masses, an element derived from a satellite composite created by NASA. Text repeated twice around the circumference of the stamp reads "GLOBAL USA FOREVER 2014." Art director William J. Gicker designed this stamp. This block of 4 Global Forever® stamps has 4 stamps that can be used to mail a one-ounce letter to any country to which First-Class Mail International® service is available. As with all Global Forever® stamps, this stamp will have a postage value equivalent to the price of a single-piece First-Class Mail International® first ounce machinable letter in effect at the time of use.
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