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Thank you, I think that file will do nicely. It seems to define the geometry in 3D rather than 2D, which is probably a mistake, but I don't think that will be hard to work around.

I'm not sure what you're asking. If you're asking what research project I'm involved in, I'm a biostatistician at the Icahn School of Medicine at Mount Sinai, working on a non-NASA study of matching up satellite products like MCD19A2 with independent data sources. If you're asking about MCD19A2, it'...

Say I want to figure out which tiles in the scheme used by MCD19A2 collection 6 (identified with names like "h10v04") are necessary to cover some region of interest (such as the contiguous United States). What's the recommended way to do that? An official shapefile for the tiles would be h...

With MOD11 data from OPeNDAP, and with MOD21A1D HDF files from EarthData Search, I've been able to interpret values of the `QC` variable with bitwise operations and the appropriate user guide. In these cases, `QC` is provided as integers. But in the case of MOD21A1D data from OPeNDAP, `QC` is given ...

For posterity, here was how I ended up handling this. Luke Oman of NASA/GSFC kindly pointed me to a command-line program, `ncks`, that can retrieve a netCDF file from an OPeNDAP server, even one that doesn't seem to produce netCDF otherwise, so I guess `ncks` processes the DODS internally. Instead o...

Thanks. I've dropped them a line.

(Hi, me again with another OPeNDAP issue. By the way, I'm Kodi Arfer and I work at Mount Sinai Health System on environmental-health research. Nice to meet you.) I've tried building queries with the Hyrax web interface at https://opendap.cr.usgs.gov/opendap/hyrax/MCD19A2.006/h00v10.ncml.html and for...

I'd like to retrieve MERRA-2's PM_{2.5} product over the coterminous US over a range of years. I think I've worked out how to construct OPeNDAP URLs for the slices of data I want, but I'm using R for analysis and I'm having trouble finding a file format that GrADS Data Server can produce and R can r...