• Chlorophyll a is the green pigment found in plants and algae.

• Chlorophyll a is the most common chlorophyll present in every plant that performs photosynthesis.

• Chlorophyll a shows how much algae is in the water.

• Algae are a large and diverse group of simple, typically autotrophic organisms, ranging from unicellular to multicellular forms.

• The data is based from MODIS Ocean Standard Products produce by nasa ocean color group (http://oceancolor.gsfc.nasa.gov)

The data that provide from this website is L3 Product. Please refer this scale to understanding the satellite image.

Sea surface temperature (SST) is the water temperature close to the surface.

A satellite infrared radiometer indirectly measures the temperature of a very thin layer of about 10 micrometres thick (referred to as the skin) of the ocean which leads to the phrase skin temperature (because infrared radiation is emitted from this layer).

A microwave instrument measures subskin temperature at about 1 mm. A thermometer attached to a moored or drifting buoy in the ocean would measure the temperature at a specific depth, (e.g. at 1 meter below the sea surface) — this temperature during the day is called temperature of the warm layer.

The measurements routinely made from ships are often from the engine water intakes and may be at various depths in the upper 20 m of the ocean. In fact, this temperature is often called sea surface temperature, or foundation temperature.

Note that the depth of measurement in this case will vary with the cargo aboard the vessel.

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The data that provide from this website is L3 Product. Please refer this scale to understanding the satellite image.