If you wish to download it, please recommend it to your friends in any social system.

HDF-EOS specifically for EOS satellites (Terra, Aqua and Aura) Important features: Self-describing; Can store swaths, grids, in-situ data, instrument metadata, and browse image in a single file; No limits on size or number of data objects; Support parallel IO, multiple platforms and API with CCFortranJavaMatlab interfaces.

Retrieve Terra MODIS Level 2 AODs at 550 nm for April 4, 2009 at 2220 UTC.

Use Matlab to make a contour plot of AOD, with latitude on the Y-axis and longitude on the X-axis.

What are the ranges of AOD in your plot What is the mean AOD Based on this information, was the event observed in the satellite data a strong volcanic event Working with HDF files from OMI (time permitting): a.

Retrieve Aura OMI Level 3 AI (UV aerosol index) for April 4, 2009 from Giovanni b.

Using Matlab, make a contour plot of AI, with latitude on the Y-axis and longitude on the X-axis.

Load the coast. c.

From the plot, which regions of the plume would you expect to be most rich in ash.

The plot: Change AOD fill values (-9999) to not a number (NaN) Dont forget to multiply AOD by a scale factor of 0.001 You will need to subtract 360 degrees from all values of longitude that are greater than 0 to remap on a linear scale.

Use Matlab help. For example, type: help contourf to gather more information on contourf.

The plot: Longitude and latitude are not included in this hdf file.

You will need to calculate your own based on the dimensions of the AI matrix and the longlat ranges (-180 to -136 longitude; 67 to 47 latitude) Remember to remove AI fill values (for this dataset, fill value You may notice when you plot this data that it needs to be flipped about the x andor y-axis to get the correct orientation.

Where would you expect to find the areas most rich in ash Hint: OMI AI serves as a qualitative indicator of the presence of UV absorbing aerosols, such as ash.

Larry Klein, Abe Taaheri, and Cid Praderas L-3 Communications Government Services, Inc.

To use this website, you must agree to our Privacy Policy, including cookie policy.

Hdfview For Mac