Expand description
Model definitions and decompression and decoding logic for NEXRAD Level II radar data volumes.
Archival NEXRAD weather radar data is distributed using an archive format built atop Unidata’s “Local Data Manager” (or LDM) system. Archive files called “volumes” contain NEXRAD Level II radar data and are composed of LDM records. They start with a “volume header record” that provides basic metadata about the radar site and collection time followed by a series of compressed records that contain radar messages with data.
The document “Interface Control Document for the Archive II/User” 2620010H (build 19.0 at writing) describes this archive format in detail, particularly in section 7 “Archive II Application Layer”.
Structs§
- File
- A NEXRAD Archive II volume data file.
- Header
- Header for an Archive II volume file containing metadata about the radar data. This header is located at the beginning of the file.
- Record
- Represents a single LDM record with its data which may be compressed.
Functions§
- split_
compressed_ records - Splits compressed LDM record data into individual records. Will omit the record size prefix from each record.