Solar UV exposure of seafarers along subtropical and tropical shipping routes.

Abstract:

:Seafarers working on decks of vessels at low latitudes are exposed to extremely high solar UV radiation. Their risk of developing skin cancer may be enhanced. Solar erythemal UV irradiance and exposure were measured for the first time on merchant vessels going along typical international routes at low latitudes. The measurements taken at horizontal incidence on the observation deck, and on different parts of the seaman (head, shoulder, chest and back) doing typical outdoor work show the highest portion (40-80% of horizontal exposure) incident on the head. 2 years of measurements of solar UV and VIS/NIR irradiance taken on the mast top of the Research Vessel METEOR were added to the data base. Radiative transfer model calculations were performed along all the routes with satellite-based input data of ozone and aerosol for clear sky health-effective radiation including vitamin D3 (VD3). Measured data show extremely high noontime UV index values up to 19 with clear sky, and up to 22 due to cloud scattering. Eight hours erythemal exposure values are more than double of typical midlatitude summer values. Based on the results, an algorithm is presented to derive a seafarer's personal erythemal exposure according to his/her personal record of sea service.

journal_name

Photochem Photobiol

authors

Feister U,Meyer G,Kirst U

doi

10.1111/php.12144

subject

Has Abstract

pub_date

2013-11-01 00:00:00

pages

1497-506

issue

6

eissn

0031-8655

issn

1751-1097

journal_volume

89

pub_type

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