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These measurements were used to map chlorophyll concentration in water, sediment distribution, salinity, and the temperature of coastal waters and ocean currents. CZCS lay the foundations for subsequent satellite ocean color sensors, and formed a cornerstone for international efforts to understand the ocean's role in the carbon cycle.
Chlorophyll maps from 2002 to 2024, provided by NASA, show milligrams of chlorophyll per cubic meter of seawater each month. [42] Places where chlorophyll amounts are very low, indicating very low numbers of phytoplankton, are blue. Places where chlorophyll concentrations are high, meaning many phytoplankton were growing, are yellow.
Satellite-derived chlorophyll-a concentration (mg m −3) from July 2002 to March 2017. This visualization was derived using data from the Moderate Resolution Imaging Spectroradiometer (MODIS) onboard NASA’s Aqua satellite. Chlorophyll-a concentration is a proxy for phytoplankton abundance. Darker shades of green indicate more chlorophyll and ...
Low-nutrient, low-chlorophyll (LNLC) regions are aquatic zones that are low in nutrients (such as nitrogen, phosphorus, or iron) and consequently have low rate of primary production, as indicated by low chlorophyll concentrations. These regions can be described as oligotrophic, and about 75% of the world's oceans encompass LNLC regions.
A satellite map of chlorophyll and phytoplankton concentration (top) paired with a map of oceanic surface temperatures at the same time (bottom). The thriving populations represented by green and yellow in the upper map correlate to areas of higher surface temperatures represented by yellow in the lower map (2 March 2009).
A false color SeaWiFS image shows a high concentration of phytoplankton chlorophyll in the Brazil Current Confluence region east of Argentina. Warm colors indicate high chlorophyll levels, and cooler colors indicate lower chlorophyll. SeaWiFS data are freely accessible from a variety of websites, most of which are government run.
His work was extrapolated to other HNLC regions through evidence which linked low surface iron concentration with low chlorophyll. [6] In response to iron fertilization experiments (IronEx, SOIREE, SEEDS, etc.) in HNLC areas, large phytoplankton responses such as decreased surface nutrient concentration and increased biological activity were ...
Ocean chlorophyll concentration is a proxy for phytoplankton biomass. In this map, blue colors represent lower chlorophyll and reds represent higher chlorophyll. Satellite-measured chlorophyll is estimated based on ocean color by how green the color of the water appears from space.