Convert solar radiation from Joule per cm square to Watt per meter^2?

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I have solar radiation data in the units of Joule per cm^2 (joule per square centimeter) measured hourly. I want to use this data in evapotranspiratin calculation which requires radiation units as Watt per meter squared. How can I do this conversion?
 

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Charles Link
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## X \frac{joule}{cm^2 \, 3600 \, seconds}= X \cdot \, ( \frac{10^4}{3600}) \frac{joule}{m^2 \, sec} =X (\frac{10^4}{3600}) \frac{watt}{m^2}=[X (\frac{25}{9})]\frac{ Watt}{m^2}## . ## \\ ##
Note: 3600 seconds=1 hour ## \\ ##
So you multiply your number by ## \frac{25}{9} ## to get the value with the new units.
 
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