UV radiation monitoring: UV index and UV dose

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UV radiation
monitoring:

UV index
UV dose

Main data product pages: Erythemal UV index  |  Daily erythemal UV dose

 

 
Introduction to
UV radiation
monitoring

UV radiation
UV & health
UV index
forecasts of
UV index
UV dose
example:
1 June 2002
links

 

Example of UV index and UV dose based on GOME -- 1 June 2002

This pages shows as an example the different steps in the derivation of the clear-sky erythemal UV index and the erythemal UV dose for 1 June 2002, starting from the GOME total ozone columns. On the left are global pictures, on the right the European area is shown.

 

World

Europe

FD total ozone column FD total ozone column
Total ozone column in Dobson Units (DU) from the GOME Fast Delivery
service at KNMI for the 14 orbits of 1 June 2002. In the northern
summer measurements above the south pole are not possible.
 
Assimilated total ozone column Assimilated total ozone column
Assimilated total ozone field at local solar noon of 1 June 2002 in Dobson
Units (DU) based on the GOME Fast Delivery total ozone columns;
the resolution of these data is 1.25x1.25 degrees.
 
Clear-sky UV index Clear-sky UV index
Clear-sky erythemal UV index at local solar noon of 1 June 2002 (1 unit equals 25 mW/m2)
as derived from the GOME assimilated total ozone field at local solar noon; the
resolution is 0.5x0.5 degrees, i.e. about 50x50 km at the equatior.
 
Clear-sky UV dose Clear-sky UV dose
Erythemal UV dose for clear-sky conditions of 1 June 2002 in kJ/m2, i.e. integrated
from sunrise to sunset, setting the cloud cover fraction at zero.
 
(not available) Erythemal UV dose
Actual erythemal UV dose of 1 June 2002 in kJ/m2, using the 1-hourly Meteosat
cloud cover fraction (available only for the area used for HIRLAM,
a limited area weather forecasting system).
 
(not available) Clear-sky minus erythemal UV dose
Difference between the clear-sky and the actual erythemal UV dose of 1 June 2002 in kJ/m2.
 

 
Some additional things regarding this example are on a separate page:

 

 


last modified: 24 July 2017
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