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This video shows the UV Index or strength of ultraviolet radiation received at the surface of the Earth during each month of the year. The UV Index varies with seasons, the sun's angle, clouds, air pollution and land elevation. ClimateBits videos... (View More) are designed for Science On a Sphere (SOS) and also available on YouTube. Links are provided to more information for this topic from the main ClimateBits website (see related & supplemental resources). (View Less)
This video features NASA scientist Claire Parkinson explaining atmospheric carbon dioxide levels seen in measurements collected at the Mauna Loa observatory since 1958 and recent global model output. The seasonal cycle of plants on land and in the... (View More) ocean explains the annual rise and fall of carbon dioxide. The long-term trend toward more CO2 in our atmosphere is largely due to human activity. We are putting CO2 into the air faster than nature can remove it. (View Less)
This video explains El Niño and its impact on the marine food web. Wind-driven upwelling in the eastern equatorial Pacific normally lifts nutrients to the sunlit surface to fertilize phytoplankton blooms. El Niño disrupts this pattern, causing... (View More) famine across the marine food web. A big El Niño developed in 2015, shown in satellite images of warmer sea surface temperatures and less chlorophyll - the green pigment in phytoplankton. ClimateBits videos are designed for Science On a Sphere (SOS) and also available on YouTube. Links are provided to more information for this topic from the main ClimateBits website (see related & supplemental resources). (View Less)
The effects of climate change on marmots in Colorado and sheep in Scotland are presented and compared. The Climate Kids website is a NASA education resource featuring articles, videos, images and games focused on the science of climate change.