SlideRuleEarth / sliderule

Server and client framework for on-demand science data processing in the cloud
https://slideruleearth.io
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CMR not returning granules that intersect region #200

Open jpswinski opened 2 years ago

jpswinski commented 2 years ago

When supplying a small region of interest for Uluru, Australia, the CMR system does not return all of the granules that intersect the region. When the size of the region is increased, all granules are then returned.

Here is the original, smaller region of interest:

{
 "region": [ {"lon": 130.838482, "lat": -25.540149},
             {"lon": 131.198350, "lat": -25.540149}, 
             {"lon": 131.198350, "lat": -25.111901},
             {"lon": 130.838482, "lat": -25.111901},
             {"lon": 130.838482, "lat": -25.540149} ]
}

Here is the larger region of interest:

{
 "region": [ {"lon": 130.538482, "lat": -25.840149},
             {"lon": 131.298350, "lat": -25.840149},
             {"lon": 131.298350, "lat": -25.011901},
             {"lon": 130.538482, "lat": -25.011901},
             {"lon": 130.538482, "lat": -25.840149} ]
}

Here is a list of granules returned for the larger region, that intersect the smaller region, but are not returned for the smaller region (there are more granules than this, but this is just a sample of them):

        'ATL03_20200831220412_10310814_004_01.h5',
        'ATL03_20210301132353_10311014_004_01.h5',
        'ATL03_20200820102319_08560808_004_01.h5',
        'ATL03_20210531090346_10311114_004_01.h5',
        'ATL03_20210218014302_08561008_004_01.h5',
        'ATL03_20210420224650_04141108_004_01.h5'
jpswinski commented 2 years ago

Contacted NSIDC (Amy S. and Steve T.) regarding issue