This archive contains answers to questions sent to Unidata support through mid-2025. Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated. For the most up-to-date information on the use of NSF Unidata software and data services, please consult the Software Documentation first.
Hello, There are many different reasons this file might not be readable; it might be corrupted, or incomplete, or (for some reason) not actually a netCDF file. Would it be possible for you to make the file which doesn't work available, so that we might inspect it? Thank you, -Ward > Hello Yingli Xuan, > > You sent Unidata a message via the "Contact Unidata" web form on September > 18, 2021. In that message you asked to be added to Unidata's "community" > e-mail list, and also asked the following netCDF question: > > > Data of CMIP5 (for an example > > hur_Amon_CCSM4_historical_r1i1p1_195001-200512.nc) > > can output results by the command of "ncdump -h XXXX". > > However, I got error if I use data of CMIP6 (for an example > > hur_Amon_GFDL-CM4_ssp585_r1i1p1f1_gr1_201501-210012.nc). > > The error is as follows, "NetCDF: Unknown file format". > > What is the reason to cause the error? > > Thanks for advance. > > I have added your e-mail address to the mailing list. This message is to add > your netCDF question to our technical support queue; someone from the netCDF > development team will respond. > > Thank you, > Douglas Dirks > Unidata Community Services Ticket Details =================== Ticket ID: JRA-997847 Department: Support netCDF Priority: Normal Status: Closed =================== NOTE: All email exchanges with Unidata User Support are recorded in the Unidata inquiry tracking system and then made publicly available through the web. If you do not want to have your interactions made available in this way, you must let us know in each email you send to us.