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^ The primary format is binary, but text and JSON formats are available. [8] [9] ^ Means that generic tools/libraries know how to encode, decode, and dereference a reference to another piece of data in the same document. A tool may require the IDL file, but no more. Excludes custom, non-standardized referencing techniques.
The addition of new element descriptors in Table B does not require changes to the BUFR software specification. The Table B definition of an element descriptor includes its number, short text definition, decoding parameters (bit width, scale factor, and bias), and type (numerical, character string, code table, etc.).
Date - 0x0b (Encoded as IEEE 64-bit double-precision floating point number with 16-bit integer time zone offset) Long String - 0x0c (32-bit integer string length with UTF-8 string) XML Document - 0x0f (32-bit integer string length with UTF-8 string) Typed Object - 0x10 (16-bit integer name length with UTF-8 name, followed by entries)
ICAO Meteorological Information Exchange Model (IWXXM) is a format for reporting weather information in XML/GML.IWXXM includes XML/GML-based representations for products standardized in International Civil Aviation Organization (ICAO) Annex III, such as METAR/SPECI, TAF, SIGMET, AIRMET, Tropical Cyclone Advisory (TCA), Volcanic Ash Advisory (VAA), [1] Space Weather Advisory and World Area ...
The best-known is the string "From " (including trailing space) at the beginning of a line, used to separate mail messages in the mbox file format. By using a binary-to-text encoding on messages that are already plain text, then decoding on the other end, one can make such systems appear to be completely transparent .
For types 2 (byte string) and 3 (text string), the count is the length of the payload. For types 4 (array) and 5 (map), the count is the number of items (pairs) in the payload. For type 6 (tag), the payload is a single item and the count is a numeric tag number which describes the enclosed item.
METAR indicates that the following is a standard hourly observation. KTTN is the ICAO identifier for the Trenton-Mercer Airport . 051853Z indicates the day of the month is the 5th and the time of day is 1853 Zulu/ UTC , or 1:53PM Eastern Standard Time .
YYGGi w: the date and time of the observation; YY for the day of the month, GG for the hour of the observation in UTC; i w for the manner of wind observation (a code number: 0 for estimated wind speed in meters per second, 1 for measured wind speed in meters per second, 2 and 3 likewise but in knots, or slash for no wind speed observations).