Graham McIntire
6489f08138
Store surface observations (ASOS) and upper-air soundings (RAOB) alongside QSOs for atmospheric propagation correlation. Three new tables: weather_stations, surface_observations, and soundings with JSONB profiles and pre-computed derived parameters (refractivity, gradients, duct detection, stability indices). Includes IEM API client for historical data import and import script seeded with 95 ASOS + 9 sounding stations from PropCast coverage area.
66 lines
2.3 KiB
Elixir
66 lines
2.3 KiB
Elixir
defmodule Microwaveprop.Repo.Migrations.CreateWeatherTables do
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use Ecto.Migration
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def change do
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create table(:weather_stations, primary_key: false) do
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add :id, :binary_id, primary_key: true
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add :station_code, :string, null: false
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add :station_type, :string, null: false
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add :wmo_number, :integer
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add :name, :string, 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 :elevation_m, :float
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add :state, :string
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timestamps(type: :utc_datetime)
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end
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create unique_index(:weather_stations, [:station_code, :station_type])
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create index(:weather_stations, [:lat, :lon])
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create table(:surface_observations, primary_key: false) do
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add :id, :binary_id, primary_key: true
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add :station_id, references(:weather_stations, type: :binary_id), null: false
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add :observed_at, :utc_datetime, null: false
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add :temp_f, :float
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add :dewpoint_f, :float
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add :relative_humidity, :float
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add :wind_speed_kts, :float
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add :wind_direction_deg, :integer
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add :sea_level_pressure_mb, :float
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add :altimeter_setting, :float
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add :sky_condition, :string
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timestamps(type: :utc_datetime)
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end
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create unique_index(:surface_observations, [:station_id, :observed_at])
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create index(:surface_observations, [:observed_at])
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create table(:soundings, primary_key: false) do
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add :id, :binary_id, primary_key: true
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add :station_id, references(:weather_stations, type: :binary_id), null: false
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add :observed_at, :utc_datetime, null: false
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add :profile, :map, null: false
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add :level_count, :integer, null: false
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add :surface_pressure_mb, :float
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add :surface_temp_c, :float
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add :surface_dewpoint_c, :float
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add :surface_refractivity, :float
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add :min_refractivity_gradient, :float
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add :boundary_layer_depth_m, :float
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add :precipitable_water_mm, :float
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add :k_index, :float
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add :lifted_index, :float
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add :ducting_detected, :boolean, null: false, default: false
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add :duct_characteristics, :map
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timestamps(type: :utc_datetime)
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end
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create unique_index(:soundings, [:station_id, :observed_at])
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create index(:soundings, [:observed_at])
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create index(:soundings, [:ducting_detected])
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end
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end
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