Boundary layer where all exchange occurs between the atmosphere and the ocean
Marine habitats
Sea slicks can provide valuable nurseries for marine larvae
Coastal habitats
Littoral zone
Intertidal zone
Estuaries
Mangrove forests
Seagrass meadows
Kelp forests
Coral reefs
Continental shelf
Neritic zone
Ocean surface
Surface microlayer
Epipelagic zone
Open ocean
Pelagic zone
Oceanic zone
Sea floor
Seamounts
Hydrothermal vents
Cold seeps
Demersal zone
Benthic zone
Marine sediment
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The sea surface microlayer (SML) is the boundary interface between the atmosphere and ocean, covering about 70% of Earth's surface. With an operationally defined thickness between 1 and 1,000 μm (1.0 mm), the SML has physicochemical and biological properties that are measurably distinct from underlying waters. Recent studies now indicate that the SML covers the ocean to a significant extent, and evidence shows that it is an aggregate-enriched biofilm environment with distinct microbial communities. Because of its unique position at the air-sea interface, the SML is central to a range of global marine biogeochemical and climate-related processes.[1]
The sea surface microlayer is the boundary layer where all exchange occurs between the atmosphere and the ocean.[2] The chemical, physical, and biological properties of the SML differ greatly from the sub-surface water just a few centimeters beneath.[3]
Despite the huge extent of the ocean's surface, until now relatively little attention has been paid to the sea surface microlayer (SML) as the ultimate interface where heat, momentum and mass exchange between the ocean and the atmosphere takes place. Via the SML, large-scale environmental changes in the ocean such as warming, acidification, deoxygenation, and eutrophication potentially influence cloud formation, precipitation, and the global radiation balance. Due to the deep connectivity between biological, chemical, and physical processes, studies of the SML may reveal multiple sensitivities to global and regional changes.[4]
Understanding the processes at the ocean's surface, in particular involving the SML as an important and determinant interface, could provide an essential contribution to the reduction of uncertainties regarding ocean-climate feedbacks. As of 2017, processes occurring within the SML, as well as the associated rates of material exchange through the SML, remained poorly understood and were rarely represented in marine and atmospheric numerical models.[4]
^Cite error: The named reference Wurl2017 was invoked but never defined (see the help page).
^Cite error: The named reference Liss2005 was invoked but never defined (see the help page).
^Zhang, Zhengbin et al. (2003). Studies on the sea surface microlayer II. The layer of sudden change of physical and chemical properties. Journal of Colloid and Interface Science. 264, 148-159.
^ abCite error: The named reference Engel2017 was invoked but never defined (see the help page).
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The seasurfacemicrolayer (SML) is the boundary interface between the atmosphere and ocean, covering about 70% of Earth's surface. With an operationally...
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"The Ocean's Vital Skin: Toward an Integrated Understanding of the SeaSurfaceMicrolayer". Frontiers in Marine Science. 4. doi:10.3389/fmars.2017.00165....
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