NCEP North American Model (NAM) outputs for the AWIPS 216 (V) grid covering Alaska. Model runs are produced four times daily (00Z, 06Z, 12Z, 18Z) with forecasts extending to 84 hours. The dataset was last updated in December 2015 and originates from the SCIOPS organization.
Use Cases
- Validate and downscale 45.0 km resolution forecasts for specific Alaskan locations using the 139 by 107 horizontal point grid.
- Analyze atmospheric pressure trends from 1000 to 50 hPa across the 3-hour forecast intervals.
- Study the initialization and propagation of forecast errors by comparing 00Z, 06Z, 12Z, and 18Z model run analyses.
- Assimilate 3-hourly forecast data into higher-resolution regional climate models for the Polar Stereographic projection area.
Strengths
- Four daily model runs (00Z, 06Z, 12Z, 18Z) provide multiple initialization points.
- Forecasts extend to 84 hours (3.5 days) with outputs every 3 hours.
- Grid defined with 139 by 107 horizontal points at 45.0 km resolution.
Limitations
- Data has not been updated since December 2015, limiting relevance for recent studies.
- Specific column names, data formats, and total record counts are unknown.
- Geographic coverage is restricted to the AWIPS 216 (V) grid over Alaska.
Provenance
- Source
- NASA Earthdata platform, originating from SCIOPS organization.
- Collection Method
- Output from the NCEP North American Model (NAM) numerical weather prediction system.
- Time Range
- Forecast cycles run every 6 hours, with outputs every 3 hours out to 84 hours.
- Freshness
- Last updated 2015-12-02; update frequency appears to be four times daily when active.
- Geography
- AWIPS 216 (V) grid over Alaska using a Polar Stereographic projection.