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Two summary tables are included in this accession summarizing the attenuation coefficients (Kd) and the 1% attenuation depth. The attenuation coefficients (Kd) were calculated as the slope of the linear regression of the natural logarithm of the ratio_uv versus depth, as described by Kirk (1994). The 1% attenuation depth was calculated using the Kd and intercept from the linear regression of the natural logarithm of the ratio_uv versus depth as: (ln(0.01)-Intercept)/Kd. Only data above 1% of the ambient irradiance were used in these calculations.

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            <gmx:Anchor xlink:href="https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/obstype/details/63" xlink:actuate="onRequest">in situ</gmx:Anchor>
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                    <gco:CharacterString>These data are available through the File Transfer Protocol (FTP). FTP is no longer supported by most internet browsers. You may copy and paste the FTP link to the data into an FTP client (e.g., FileZilla or WinSCP).</gco:CharacterString>
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Observation Category: in situ;
Sampling Instrument: Biospherical Instruments Inc. PUV-2500 submersible, multichannel, profiling, ultraviolet radiometer</gco:CharacterString>
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Units: degrees Celsius;
Observation Category: in situ;
Sampling Instrument: Biospherical Instruments Inc. PUV-2500 submersible, multichannel, profiling, ultraviolet radiometer</gco:CharacterString>
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Observation Category: in situ;
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Units: inverse meter (m^-1);
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