Erythemal UV radiation at Davis station summer 1998Entry ID: UV_Davis
Abstract: Data provides the date, time and 10 min cumulative erythemal irradiance at Davis Station for downwelling solar radiation and the irradiance at depth beneath neutral density screen (ND-polythene) and 3.3, 5.5, and 9.0 mm borosilicate glass. These light treatments simulated watercolumn depths of 1.0, 2.0, 3.0, and 3.6 m depth (calculated using Beer's Law and the average UV transmittance of Antarctic seawater at 4 ice-edge sites). A no erythemal UV control (transmittance greater than 375 nm) was also used in which samples were incubated beneath UV-stabilised polycarbonate.
The fields in this dataset are:
Davis solar time
Start Date: 1998-01-08Stop Date: 1998-01-15
ATMOSPHERE > ATMOSPHERIC RADIATION > SOLAR IRRADIANCE
ATMOSPHERE > ATMOSPHERIC RADIATION > ULTRAVIOLET RADIATION
BIOSPHERE > AQUATIC ECOSYSTEMS > COASTAL HABITAT
BIOSPHERE > ECOLOGICAL DYNAMICS > SPECIES/POPULATION INTERACTIONS > POPULATION DYNAMICS
BIOSPHERE > ECOLOGICAL DYNAMICS > COMMUNITY DYNAMICS > PLANT SUCCESSION
BIOSPHERE > ECOLOGICAL DYNAMICS > ECOSYSTEM FUNCTIONS > FOOD-WEB DYNAMICS
BIOSPHERE > ECOLOGICAL DYNAMICS > ECOSYSTEM FUNCTIONS > TROPHIC DYNAMICS
Quality Data were obtained using a Macam, portable, double grating spectroradiometer that was routinely calibrated against deuterium and tungsten lamps. These lamps are calibrated to international standards (National Physics Laboratory). The spectral irradiance for downwelling solar radiation was measured at 5 min intervals between 280 and 400 nm wavelength. The irradiance at each nanometer was ... multiplied by the transmittance of UV-attenuating screens used to simulate increasing watercolumn depth in studies of the impact of UV radiation on marine microbes. This data were then multiplied by theerythemal weight at each wavelength and the results integrated over the UV spectrum, erythemal irradiance averaged over 10 mins and the cumulative erythemal irradiance calculated. Secondary calibration was then performed against simultaneous measurements of 10 min integrated erythemal irradiance obtained by ARPANSA at Davis during the experiment.
Some deterioration of sensor function was experienced during the experiment. Inaccuracy resulting from this deterioration has been compensated for by the secondary calibration against ARPANSA data.
Access Constraints Freely available
Use Constraints This data set conforms to the PICCCBY Attribution License
Data Set Progress
Role: TECHNICAL CONTACT
Role: DIF AUTHOR
Phone: +61 3 6232 3444
Fax: +61 6232 3351
Email: andrew.davidson at aad.gov.au
Australian Antarctic Division 203 Channel Highway
Province or State: Tasmania
Postal Code: 7050
Davidson AT, van der Heijden A (2000). Exposure of Antarctic marine microbial assemblages to ambient UV radiation: effects on bacterioplankton. Aquat Microb Ecol (in press)
Davidson AT, Belbin L (2000). Exposure of Antarctic marine microbial communities to ambient solar radiation: effects on protists. Aquat Microb Ecol (in prep).
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Creation and Review Dates
DIF Creation Date: 2000-05-19
Last DIF Revision Date: 2014-01-10