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One year of spectral UV observations at Paramaribo, Suriname are analysed. The data have been compared with radiative transfer (RT) model calculations and with ozone column measurements. Specific features are discussed that modulate the UV insolation at this site over the year. Specifically these include the annual cycles in solar zenith angle and total ozone column, the Sun-Earth distance and the effect of clouds and aerosols. The UV insolation at Paramaribo is found to be surprisingly constant.

Introduction

Since March 1999 spectral UV observations at Paramaribo, Suriname are performed with a Brewer MKIII double spectrophotometer. Currently one year of data has been analysed and compared with radiative transfer (RT) model calculations and with ozone column measurements.

Figure 1. The picture shows the Brewer #159 on the right side of the platform at the roof of the MDS. The site is at sea level and has a 360 degrees free horizon.