What are El Nino and La Nina? - NOAA's National Ocean Service
El Niño and La Niña are two opposing climate patterns that break these normal conditions. Scientists call these phenomena the El Niño-Southern Oscillation (ENSO) cycle. El Niño and La Niña can both have global impacts on weather, wildfires, ecosystems, and economies. Episodes of El Niño and La Niña typically last nine to 12 months, but ...
What are the trade winds? - NOAA's National Ocean Service
Known to sailors around the world, the trade winds and associated ocean currents helped early sailing ships from European and African ports make their journeys to the Americas. Likewise, the trade winds also drive sailing vessels from the Americas toward Asia.
What is upwelling? - NOAA's National Ocean Service
2024年6月16日 · Upwelling is a process in which deep, cold water rises toward the surface. This graphic shows how displaced surface waters are replaced by cold, nutrient-rich water that “wells up” from below. Conditions are optimal for upwelling along …
NOAA's National Ocean Service: Ocean Video
El Niño and La Niña Explained (Ocean Today) Hurricane Storm Surge (Ocean Today) The Acid Test (Ocean Today) Know Your Ocean (Ocean Today)
The Blue Economy is growing, and critical to national prosperity, resource conservation, and security. NOAA expands and strengthens the American Blue Economy by leading agency-wide initiatives in the following areas: Marine Transportation. Ocean Exploration.
La Jolla, CA 6 10 13 6 5 San Francisco, CA 12 21 20 12 9 Seattle, WA--- --- 8 --- ---Honolulu, HI 17 --- 4 17 ---Blank values indicate there is no observable trend based on statistical analysis *Station added to this year’s analysis due to high frequency of tidal flooding in 2015 CO060716
What is maritime heritage? - uat.oceanservice.noaa.gov
2024年6月16日 · Maritime heritage preserves and protects valuable historical, cultural, and archaeological resources within our coastal, marine, and Great Lakes environments. The study of maritime heritage resources may include photo-documentation and archaeological site plans.
What is the geoid? - National Oceanic and Atmospheric …
This irregular shape is called "the geoid," a surface which defines zero elevation. Using complex math and gravity readings on land, surveyors extend this imaginary line through the continents. This model is used to measure surface elevations with a high degree of accuracy.
What is ecosystem science? - National Oceanic and Atmospheric ...
2024年6月16日 · An ecosystem is an ecological community comprised of biological, physical, and chemical components, considered as a unit. NOS scientists monitor, research, and study ecosystem science on many levels. They may monitor entire ecosystems or they may study the chemistry of a single microbe.
NOAA's National Ocean Service: News
The National Ocean Service (NOS) translates science, tools, and services into action, to address threats to coastal areas such as climate change, population growth, port congestion, and contaminants in the environment, all working towards healthy coasts and healthy economies.