U.S. Voluntary Observing Ship Weather Reports in IMMT-5 Format

Delayed-mode surface marine observations reported by U.S. Voluntary Observing Ships using SEAS v9.1 e-logbook software. Data is structured in the International Maritime Meteorological Tape (IMMT-5) format and archived by the National Climatic Data Center. The temporal coverage and total volume are unspecified.

Use Cases

• Modeling sea surface temperature and atmospheric pressure based on ship-reported marine observations.
• Analyzing weather patterns and climatology over ocean routes based on delayed-mode transmission data.
• Validating satellite-derived oceanographic data against in-situ ship-based measurements.
• Studying data transmission formats and consistency between real-time (FM-13) and delayed-mode (IMMT) reports.

Strengths

• Data originates from an operational program (U.S. VOS) with a defined collection and archival pipeline at the National Climatic Data Center.
• Reports are structured in a standardized meteorological format (IMMT-5), suggesting consistency.
• Collection method includes both real-time and delayed-mode transmission, potentially offering data redundancy.

Limitations

• Row count, file formats, and data volume are unknown, which limits suitability assessment.
• Column-level documentation is absent; field semantics must be inferred after download.
• Last update date and temporal coverage are unknown; data freshness is unverified.

Provenance

Source

NOAA_NCEI (National Centers for Environmental Information).

Collection Method

Observations entered via SEAS v9.1 e-logbook software on ships, saved to hard drives, and retrieved in port for delayed-mode transmission to the archive.

Time Range

Temporal coverage is unknown.

Freshness

Update frequency or recency is unknown.

Geography

Spatial coverage likely includes global shipping routes where U.S. Voluntary Observing Ships operate.