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A modification has been made in a Brewer double monocromator chassis window (supplied by K&Z) to be easily removed in order to carry out the polarisation experiment during the Davos campaign. In the link can be seen the simplicity of the system.
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We want to test before the campaign the polarization measurements on the brewer, K&Z provide a spare cover and Virgilio modify the quarz window holder so we can easyly remove the quarzt window
Jose Manuel will test the device (tomorrow) and we have several questions about the procedure.
We are intereseted on measurements with low sun angles where the polarization effect is higher, but which area the measuements to test , only ds ? , or also direct scan and/or zs.
Alberto
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On the Alexander Cede et al paper use direct sun scan (ss) from 17º to 83º , also note that there isn't to much wavelength dependence so probably you can increase the step of the uv scan.
http://www.esrl.noaa.gov/gmd/g.....er2006.pdf
Alberto
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