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I am attempting to download the MODIS Chlorophyll data but the formats are giving me difficulties. I have extracted the provided .bz2 files, but I am not sure how to read the resulting files --> e.g. "A20090012009365.L3m_YR_CHLO_4"
Ideally I would like to get a .HDF file, but I can't seem to extract the downloads properly.
Any help is greatly appreciated.
Thanks, Sean. but...
When I download the SMI/HDF file for Chlorophyll and add the ".hdf" extension it is readible in ArcGIS.
However, when I perform the same steps on Sea Surface SMI/HDF files they will not read. Any idea why?
No, I cannot explain why ArcGIS has trouble with the SST files.
All the SMI files have the same l3m_data SDS.
The SST has an additional SDS (l3m_qual - for the SST quality level flag).
This is the only difference (aside from the obvious e.g. scaling factors)
I read your reply and I have also a similar kind of problem in reading HDF files. I am a windows user and installed HDf View 2.6 to read HDF4 files downloaded from MODISA Mapped products.
In HDF View, I can see two files l3m_data and l3m_qual where l3m_data carries all scientific values of SST or Chlo etc. I have exported these hdf l3m_data to TXT file and then to excel for reading them.
In data table it shows 65535 as fill data and remaining are 5 or 4 digit values.
I understand fill value is a value for land area this is OK but I am confused how to read other values as scientific references.
Can anybody help me how to refer these values as exact parameter values?
whether I should go for binned or any other products rather than mapped products to read exact parameter values.
Kindly sugggest is there a need to go for scripting in C for further processing of these values.
Thanks in advance