GRIB2
application/octet-stream
Magic Bytes
Offset: 0
47 52 49 42
GRIB2 is a binary file format defined by the World Meteorological Organization (WMO) for the storage and transport of gridded meteorological data. It serves as the standard global format for exchanging numerical weather prediction output, facilitating efficient transmission of large atmospheric and oceanic datasets between agencies. This second iteration offers improved compression and flexibility over the legacy GRIB1 standard, though specialized software is required to decode its complex binary structure.
Validation Code
How to validate .grib2 files in Python
Python
def is_grib2(file_path: str) -> bool:
"""Check if file is a valid GRIB2 by magic bytes."""
signature = bytes([0x47, 0x52, 0x49, 0x42])
with open(file_path, "rb") as f:
return f.read(4) == signatureHow to validate .grib2 files in Node.js
Node.js
function isGRIB2(buffer: Buffer): boolean {
const signature = Buffer.from([0x47, 0x52, 0x49, 0x42]);
return buffer.subarray(0, 4).equals(signature);
}
Go
func IsGRIB2(data []byte) bool {
signature := []byte{0x47, 0x52, 0x49, 0x42}
if len(data) < 4 {
return false
}
return bytes.Equal(data[:4], signature)
}API Endpoint
GET
/api/v1/grib2
curl https://filesignature.org/api/v1/grib2