Graham McIntire
13180d572e
Replaces the broken ERA5/CDS path with NCEP NARR fetched anonymously from NCEI. NARR is GRIB1, anonymous HTTPS, byte-range-fetchable, with 1979-01-01 → 2014-10-02 coverage that lines up perfectly against the HRRR archive start. Variables match the existing era5_profiles schema 1:1 (DPT is a direct surface dewpoint record, no SPFH derivation needed at the surface). Phase 1 spike done by hand: byte-range fetched 5 surface records and 3 pressure-level records for DFW 2010-06-15 12Z. wgrib2 turned out to NOT read GRIB1 messages (rd_grib2_seq_msg, grib1 message ignored, use wgrib), so the plan now uses cdo for both GRIB1 decoding and Lambert conformal nearest-neighbor remap. cdo -merge is the right operator for combining records of different variables — cdo -cat is for time concat and silently drops mismatched levels, shell cat produces an invalid composite. cdo emits param numbers as varNNN; mapping table is in the plan's Architecture section. Spike values for DFW 2010-06-15 12Z (all physically sane): TMP_2m=296.94 K (23.8°C) DPT_2m=294.49 K (21.3°C) HPBL=703 m PRES_sfc=99383 Pa PWAT=45.1 mm TMP_850mb=291.52 K HGT_850mb=1547.8 m SPFH_850mb=10.4 g/kg Plan file kept at the original 2026-04-15-merra2-historical-backfill filename for git history continuity even though the implementation is NARR not MERRA-2 (history block at the top documents the pivot). |
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| .. | ||
| fixtures | ||
| microwaveprop | ||
| microwaveprop_web | ||
| mix/tasks | ||
| support | ||
| test_helper.exs | ||