Assessing the ecological impact of the Antarctic ozone hole using multisensor satellite data

Dan Lubin; Kevin Arrigo; Osmund Holm-Hansen

doi:10.1117/12.509148

4 November 2003 Assessing the ecological impact of the Antarctic ozone hole using multisensor satellite data

Dan Lubin, Kevin Arrigo, Osmund Holm-Hansen

Proceedings Volume 5156, Ultraviolet Ground- and Space-based Measurements, Models, and Effects III; (2003) https://doi.org/10.1117/12.509148
Event: Optical Science and Technology, SPIE's 48th Annual Meeting, 2003, San Diego, California, United States

Abstract

We have developed a satellite-based numerical simulation for determining the extent to which enhanced solar ultraviolet radiation (UVR) under the springtime Antarctic ozone decrese affects primary production throughout the Southern Ocean. This satellite approach using NASA Sea-viewing Wide Field-of-view Sensor (SeaWiFS) data for chlorophyll and phytoplankton biomass, passive microwave data for sea ice concentration, and Total Ozone Mapping Spectrometer (TOMS) data for total column ozone and cloud reflectivity, circumvents many of the limitations involved with extrapolating point field measurements to larger geographical areas. The satellite data are used to force a physiology-based model of phytoplankton growth in response to UV-B, UV-A, and photosynthetically active radiation(PAR). Comparison with field measurements in the Western Antarctic Peninsula region shows excellent agreement. UVR-induced losses of surface phytoplankton production were substantial under all ozone conditions, due mostly to UV-A. However, when integrated to the 0.1% light depth, the loss of primary production resulting from enhanced fluxes of UV-B due to ozone depletion was less than 0.25%. The loss of primary production is minimized by the strong attenuation of UVR in the water column and by the spatial and temporal mismatch between the maximum extent of the Antarctic ozone hole and the maximum abundance of phytoplankton in the open water.

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Dan Lubin, Kevin Arrigo, and Osmund Holm-Hansen "Assessing the ecological impact of the Antarctic ozone hole using multisensor satellite data", Proc. SPIE 5156, Ultraviolet Ground- and Space-based Measurements, Models, and Effects III, (4 November 2003); https://doi.org/10.1117/12.509148

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KEYWORDS

Ozone

Absorption

Satellites

Ultraviolet radiation

Magnesium

Data modeling

Reflectivity

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