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Last Post 29 Sep 2009 03:13 AM by  anon
Deriving Solar Zenith Angle and Sensor Zenith Angle from MODIS images
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anon



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29 Sep 2009 03:13 AM
    Hello Everyone, I am a new user of MODIS images in ENVI and IDL.  I have several questions to ask as follows: How to do georeferencing by batch mode?  I have downloaded daily MODIS images (calibrated radiances 1km) for several months (target to get 1 year worth of data), which I need to process to derive the Global Irradiance.  But first I need to georeference it.  Using ENVI tools is easy but you have to do this one image at a time and considering the volume of the data I have, this process takes a lot of time. How to derive the Solar Zenith Angle and Sensor Zenith Angle from the MODIS image.  I heard someone successfully derived the solar zenith angle given the date, time and year of the image. Thank you and I look forward to your reply that would resolve the above. Cecil    

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    01 Oct 2009 08:54 AM
    Hello fellow users of MODIS.  I finally learned how to get the solar zenith, solar azimuth, sensor zenith and sensor azimuth from MODIS images.  Mr. Ridgway of NASA told me to check on the calibrated radiance 5KM resolution product.  I checked and indeeds all the data I need are there. Check it out.

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    03 Mar 2010 12:55 PM
    Hello Everyone, How to derive the Solar Zenith Angle and Sensor Zenith Angle from the MODIS image.  I heard someone successfully derived the solar zenith angle given the date, time and year of the image.   Thanks for your help   MIlton Romero milher67@yahoo.com I am a new user of MODIS images in ENVI and IDL.  I have this question: 

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    13 Oct 2011 01:30 PM
    [QUOTE]cecil_bpagba wrote Hello fellow users of MODIS. I finally learned how to get the solar zenith, solar azimuth, sensor zenith and sensor azimuth from MODIS images. Mr. Ridgway of NASA told me to check on the calibrated radiance 5KM resolution product. I checked and indeeds all the data I need are there. Check it out. [/QUOTE] me puedes hacer el favor y decirme como determinaste el angulo cenital del sensor modis?
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