Hi Gerry,
re:
> We're looking to get the GOES-16 Level 2 products here. Got any ideas?
The Level 2 products are available in the LDM/IDD HDS and NOTHER feeds.
re:
> We're also interested in the 5-min RadC data and cloud properties
> retrievals.
Hmm... RadC is a coverage, not a type of product.
There are a number of products that could be referred to as cloud properties:
CloudOpticalDepth
CloudParticleSize
CloudTopHeight
CloudTopPhase
CloudTopPressure
CloudTopTemperature
Is this the list you have in mind, or are some of the other ones also of
interest?
re:
> Know of any chance of getting those?
If you already have an LDM/IDD feed, all you need to do is make sure
that you are REQUESTing the appropriate feeds. The following will REQUEST
all Level-2 products:
REQUEST NOTHER|HDS "^IXT" <upstream feed host>
The Product IDs for the GOES-16 Level 2 products look like:
IXTH99 KNES 162221
IXTD99 KNES 162221
IXTW01 KNES 162221
IXTN99 KNES 162221
IXTG99 KNES 162221
It is pretty clear that the Product IDs do _not_ have enough information
to allow one to extract the coverages that one wants!
What we are doing here (and this is in no way finished) is:
1) using a Python script to strip off the header block and FILE products
in a gross way
The pattern-action file entry for processing the Level 2 products we
are using is:
#
# -------------------------------------
# - NOAAPORT GOES-16 netCDF4 Products -
# -------------------------------------
#
NOTHER|HDS ^IXT(...) KNES ([0-9][0-9])([0-9][0-9][0-9][0-9])
PIPE -close
etc/TDS/ldm-alchemy/strip_header.py
/data/ldm/pub/native/satellite/GOES/GOES16/Products/\1/(\2:yyyy)(\2:mm)\2/GOES16_\1_(\2:yyyy)(\2:mm)\2_\3.nc4
strip_header.py is part of the ldm-alchemy package that Ryan May wrote
and makes available in the Unidata section of GitHub.
2) I wrote a BASH script, L2ProdLink.sh, that we run once per minute out of cron
to create hard links from disk files written by strip_header.py to
files in much more descriptive named directories whose subdirectories
represent the coverage of the products
I have attached L2ProdLink.sh to this reply for your review.
If you are looking to grab individual files from time to time and are not
looking for an LDM/IDD feed, you can browse files in the
thredds-test.unidata.ucar.edu
catalog:
http://thredds-test.unidata.ucar.edu/thredds/catalog/catalog.html
Test Datasets
http://thredds-test.unidata.ucar.edu/thredds/catalog/testDatasets.html
GOES-16 Products
http://thredds-test.unidata.ucar.edu/thredds/catalog/satellite/goes16/catalog.html
GOES-16 -> Products
http://thredds-test.unidata.ucar.edu/thredds/catalog/satellite/goes16/GOES16/Products/catalog.html
The directory hierarchies shown in the last page represent those created by
strip_header.py
AND L2ProdLink.sh. L2ProdLink.sh cracks the files written by strip_header.py
and
extracts the coverage information and the name of the original file that is
stored
in the netCDF global attribute 'dataset_name' (e.g.,
OR_ABI-L2-ADPM2-M3_G16_s20180472242576_e20180472243033_c20180472243203.nc)
Aside: I found that I needed to get and then use the original file name from the
'dataset_name' global attribute for ADDE serving of the data. The Level 2
products
are available via ADDE in the RTGOESR dataset on both lead.unidata.ucar.edu and
atm.ucar.edu.
Cheers,
Tom
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Ticket Details
===================
Ticket ID: CXW-914463
Department: Support IDD
Priority: Normal
Status: Closed
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Attachment:
L2ProdLink.sh
Description: application/shellscript