Graham McIntire
0f0e5e8d43
Phase 3 NEXRAD spike: IEM n0q composite available at 5-min cadence back to 2022+. Compression-ratio proxy shows afternoon images have 13-81% more texture than dawn (directionally correct), but the n0q product thresholds out the faint clear-air returns needed for BL stability detection. Parked until MRMS or Level III products can be investigated. See docs/research/nexrad_spike.md. Phase 6: hrrr_climatology table aggregating surface_temp_c by (lat, lon, month, hour) from the 42M+ hrrr_profiles grid-point rows. mix hrrr_climatology builds it via a single SQL GROUP BY + upsert. Backtest.Features.temperature_anomaly computes current_temp minus climatological mean — the meteorologist's "temperature deviation above normal" predictor for summer afternoon enhancement.
19 lines
629 B
Elixir
19 lines
629 B
Elixir
defmodule Microwaveprop.Repo.Migrations.CreateHrrrClimatology do
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use Ecto.Migration
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def change do
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create table(:hrrr_climatology, primary_key: false) do
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add :id, :binary_id, primary_key: true, null: false
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add :lat, :float, null: false
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add :lon, :float, null: false
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add :month, :integer, null: false
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add :hour, :integer, null: false
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add :mean_surface_temp_c, :float
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add :stddev_surface_temp_c, :float
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add :sample_count, :integer
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end
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create unique_index(:hrrr_climatology, [:lat, :lon, :month, :hour])
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create index(:hrrr_climatology, [:month, :hour])
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end
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end
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