Class: Atmospheris::Iso5878::AtmosphereModelRegistry

Inherits:
Object
  • Object
show all
Defined in:
lib/atmospheris/iso5878/model_registry.rb

Overview

Factory for constructing AtmosphereProfile instances from model identifiers.

Maps model IDs (e.g. "15-annual", "60-warm") to their latitude, season, and temperature layer structure key. Surface conditions are looked up from Table 2 data. Layer structures are loaded from YAML data (Table 16/19).

Open/closed: new models can be added to MODELS without modifying AtmosphereProfile or TemperatureLayerStructure.

Constant Summary collapse

MODELS =

Model definitions: maps model_id to configuration

{
  "15-annual" => { latitude: 15,  season: :annual, layers_key: :"rows-15" },
  "30-winter" => { latitude: 30,  season: :winter, layers_key: :"rows-30-w" },
  "30-summer" => { latitude: 30,  season: :summer, layers_key: :"rows-30-s" },
  "45-winter" => { latitude: 45,  season: :winter, layers_key: :"rows-45-w" },
  "45-summer" => { latitude: 45,  season: :summer, layers_key: :"rows-45-s" },
  "60-winter" => { latitude: 60,  season: :winter, layers_key: :"rows-60-w" },
  "60-summer" => { latitude: 60,  season: :summer, layers_key: :"rows-60-s" },
  "60-warm" => { latitude: 60,  season: :winter, layers_key: :"rows-60-warm" },
  "60-cold" => { latitude: 60,  season: :winter, layers_key: :"rows-60-cold" },
  "80-winter" => { latitude: 80,  season: :winter, layers_key: :"rows-80-w" },
  "80-summer" => { latitude: 80,  season: :summer, layers_key: :"rows-80-s" },
  "80-warm" => { latitude: 80,  season: :winter, layers_key: :"rows-80-warm" },
  "80-cold" => { latitude: 80,  season: :winter, layers_key: :"rows-80-cold" }
}.freeze
SURFACE_CONDITIONS =

Surface conditions from ISO 5878 Table 2. Pressures in Pa, temperatures in K.

{
  15 => {
    annual: { T: 299.650, P: 101_325.0 }
  },
  30 => {
    winter: { T: 283.150, P: 102_050.0 },
    summer: { T: 297.150, P: 101_400.0 }
  },
  45 => {
    winter: { T: 272.650, P: 101_800.0 },
    summer: { T: 291.150, P: 101_350.0 }
  },
  60 => {
    winter: { T: 256.150, P: 101_300.0 },
    summer: { T: 282.150, P: 101_020.0 }
  },
  80 => {
    winter: { T: 248.950, P: 101_380.0 },
    summer: { T: 276.650, P: 101_200.0 }
  }
}.freeze

Class Method Summary collapse

Class Method Details

.create(model_id, layers_data) ⇒ AtmosphereProfile

Construct an AtmosphereProfile for the given model ID.

Parameters:

  • model_id (String) —

    e.g. "15-annual", "60-warm"

  • layers_data (Hash) —

    YAML data from table16.yaml or table19.yaml Must contain the key matching the model's layers_key

Returns:

Raises:

  • (ArgumentError) 


61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
 
# File 'lib/atmospheris/iso5878/model_registry.rb', line 61

def self.create(model_id, layers_data)
  config = MODELS.fetch(model_id) do
    raise ArgumentError, "Unknown ISO 5878 model: #{model_id}. " \
                         "Available: #{MODELS.keys.join(", ")}"
  end

  surface = SURFACE_CONDITIONS.dig(config[:latitude], config[:season])
  raise ArgumentError, "No surface conditions for #{config[:latitude]}° #{config[:season]}" unless surface

  raw_rows = layers_data[config[:layers_key].to_s]
  raise ArgumentError, "Layer data key '#{config[:layers_key]}' not found in provided data" unless raw_rows

  # Normalize YAML keys to symbols
  normalized = raw_rows.map do |row|
    {
      geopotential_altitude: row["geopotential-altitude"] || row[:geopotential_altitude],
      temperature_K: row["temperature-K"] || row[:temperature_K]
    }
  end

  tls = TemperatureLayerStructure.from_yaml_rows(normalized)
  params = SurfaceParameters.new(config[:latitude])

  AtmosphereProfile.new(
    surface_params: params,
    surface_temperature: surface[:T],
    surface_pressure: surface[:P],
    layers: tls.to_a
  )
end

.model_ids ⇒ Array<String>

List all available model IDs.

Returns:

  • (Array<String>) 


94
95
96
 
# File 'lib/atmospheris/iso5878/model_registry.rb', line 94

def self.model_ids
  MODELS.keys
end