NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.
Current content can be found at unidata.ucar.edu.
To learn about what's going on, see About the Archive Site.
NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.
Current content can be found at unidata.ucar.edu.
To learn about what's going on, see About the Archive Site.
Dear Stuart, Here you have a demo how to access a DAP2 endpoint at ESGF node: https://asciinema.org/a/0tn1h4jw4921zyydabtv6hhwd You will need your own OpenID [1] and DAPURL. More details and use cases at: https://meteo.unican.es/trac/wiki/ESGFGetCredentialsAlso you can use the nccopy withthe openadp url where you can specify the query to extract only the intereste point/points in the index space (not coordinate value space)
Please just ask. Regards Antonio S. Cofiño [1] For login and registration at ESGF and CMIP5 data you can use https://www.earthsystemcog.org/projects/cog/doc/esgf/faq/login On 25/01/18 15:54, Nathan Potter wrote:
Hi Stuart, Unfortunately I do not have access credentials for any of the OpenID providers listed at that site and thus am unable to view that dataset. However from the URL I can see that the software that is providing access is not Hyrax, but rather the THREDDS Data Server (TDS), the form interface is roughly the same as the one the we provide with Hyrax so the documentation link I sent is relevant. The form utilizes array index based subsetting, not value based subsetting. For your request you would need to examine the longitude and latitude arrays to determine the indices of the bounding box you wish to subset. This can be done quickly by selecting one the coordinate variables (pick for example the variable for latitude) by selecting just that in the form and then clicking on the “Get ASCII” button. (You may need to do a bit of scripting to find the indices of the bounds) Repeat for longitude. Once you can express them as start:stride:stop you can select the variable you wish to retrieve (pH for example) and plug those index values into the appropriate part of the form. Using the form you can then retrieve the results as either an ASCII download or as a DAP2 binary object. The TDS provides several other (possibly more intuitive) ways to request data, but I am not entirely familiar with them so I am including the TDS support list so that they can chime in and assist you. Cheers, NathanOn Jan 25, 2018, at 6:35 AM, Tolley, Stuart <st514@xxxxxxxxxxxx> wrote: Hi Nathan, This is the URL I am hoping to use: http://esgf-data1.ceda.ac.uk/thredds/dodsC/cmip5.output1.MOHC.HadGEM2-ES.rcp45.mon.ocnBgchem.Omon.r4i1p1.ph.20120110.aggregation.1 Thank you in advance for any assistance you can provide. Regards, Stuart From: Nathan Potter <ndp@xxxxxxxxxxx> Sent: Thursday, January 25, 2018 1:57:48 PM To: Tolley, Stuart Cc: Nathan Potter; support@xxxxxxxxxxx Subject: Re: [support] Data RequestHi Stuart,You can find more about how to use the form here: https://opendap.github.io/documentation/QuickStart.html#_an_easy_way_using_the_browser_based_opendap_server_dataset_access_form I can provide more specific help if you send me the URL of the form page. We provide the software (Hyrax) but many institutions around the world deploy it and I can’t know which dataset you are attempting to access without the URL. Sincerely, Nathan PotterOn Jan 25, 2018, at 3:51 AM, Tolley, Stuart <st514@xxxxxxxxxxxx> wrote: Dear Sir/Madame, I am currently trying to download data using your dataset access form, however I am finding it very difficult to understand. The data I am trying to access is: Project= CMIP5 model=HadGEM2-es experiment=RCP4.5 The main variable I'm looking for is pH. The specific area I need it in is a region of sea off the British Coastline: Latitude= 51-52 Longitude= 1.7-2.55. The time I require if for the year 2050 and 2100. Could you please help me download this data! Regards, Stuart Tolley= = = Nathan Potter ndp at opendap.org OPeNDAP, Inc. +1.541.231.3317= = = Nathan Potter ndp at opendap.org OPeNDAP, Inc. +1.541.231.3317 _______________________________________________ NOTE: All exchanges posted to Unidata maintained email lists are recorded in the Unidata inquiry tracking system and made publicly available through the web. Users who post to any of the lists we maintain are reminded to remove any personal information that they do not want to be made public. thredds mailing list thredds@xxxxxxxxxxxxxxxx For list information or to unsubscribe, visit: http://www.unidata.ucar.edu/mailing_lists/
thredds archives: