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#101: Correct error in introductory text of Section 4.4 -- definition of 'year' ----------------------------+----------------------------------------------- Reporter: stevehankin | Owner: [email protected] Type: defect | Status: new Priority: medium | Milestone: Component: cf-conventions | Version: Keywords: | ----------------------------+----------------------------------------------- == 1. Title == Correct error in introductory text of Section 4.4 -- definition of 'year' == 2. Moderator == Steve Hankin == 3. Requirement == just a factual error that out to be corrected. The change will have no further impacts. == 4. Initial Statement of Technical Proposal == The intro to 4.4. Time Coordinate in CF is wrong where it says "''The Udunits package defines a year to be exactly 365.242198781 days''". This line should be corrected to say "''The Udunits package defines a year to be exactly 365.2425 days''" Explanation: Udunits merely comments on the year length of 365.242198781 days. It actually defines the Gregorian year length to be 365.2425 See text at [http://www.unidata.ucar.edu/software/udunits/udunits-1/udunits.txt]. {{{ # Interval between 2 successive passages of sun through vernal equinox # (365.242198781 days -- see # http://www.ast.cam.ac.uk/pubinfo/leaflets/, # http://aa.usno.navy.mil/AA/ # and http://adswww.colorado.edu/adswww/astro_coord.html): tropical_year P 3.15569259747e7 second lunar_month P 29.530589 day common_year P 365 day # exact: 3.153600e7 seconds leap_year P 366 day # exact Julian_year P 365.25 day # exact Gregorian_year P 365.2425 day # exact }}} -- Ticket URL: <https://cf-pcmdi.llnl.gov/trac/ticket/101> CF Metadata <http://cf-pcmdi.llnl.gov/> CF Metadata This message came from the CF Trac system. To unsubscribe, without unsubscribing to the regular cf-metadata list, send a message to "[email protected]" with "unsubscribe cf-metadata" in the body of your message.
