### MYD08_D3 and MYD08_M3 inconsistency

Posted:

**Tue May 07, 2024 5:54 am America/New_York**Hello,

I have noticed an inconsistency between the MODIS Aqua monthly mean and daily mean products. I am looking at the variables "Cloud_Effective_Radius_37_Liquid_Mean" and "Cloud_Effective_Radius_37_Liquid_Mean_Mean", with the understanding that the MYD08_M3 should be the mean of the daily mean dataset.

I have downloaded all the datasets from LAADS DAAC at ladsweb.modaps.eosdis.nasa.gov/ using wget.

I am looking at the month of November in 2006, my monthly dataset is MYD08_M3.A2006305.061.2018028002918.hdf, and the daily dataset is the MYD08_D3.A2006 ranging from DOY 305 to 334 inclusive.

I have attached a plot of the differences between the mean of the daily means and the monthly mean data for the Cloud_Effective_Radius_37_Liquid variable.

Could you help me figure out what is going wrong here?

Thank you

I have noticed an inconsistency between the MODIS Aqua monthly mean and daily mean products. I am looking at the variables "Cloud_Effective_Radius_37_Liquid_Mean" and "Cloud_Effective_Radius_37_Liquid_Mean_Mean", with the understanding that the MYD08_M3 should be the mean of the daily mean dataset.

I have downloaded all the datasets from LAADS DAAC at ladsweb.modaps.eosdis.nasa.gov/ using wget.

I am looking at the month of November in 2006, my monthly dataset is MYD08_M3.A2006305.061.2018028002918.hdf, and the daily dataset is the MYD08_D3.A2006 ranging from DOY 305 to 334 inclusive.

I have attached a plot of the differences between the mean of the daily means and the monthly mean data for the Cloud_Effective_Radius_37_Liquid variable.

Could you help me figure out what is going wrong here?

Thank you