eradiate.thermoprops.afgl_1986.make_profile#

eradiate.thermoprops.afgl_1986.make_profile(model_id='us_standard', levels=None, concentrations=None)[source]#

Return atmosphere thermophysical properties based on atmosphere models defined in AFGL’s 1986 technical report [ACC+86].

This function lets you interpolate the atmosphere thermophysical properties on a different level altitude mesh than the original.

You can also rescale the molecules’ fractions so that target concentrations are met for these molecules. Target concentrations can be provided in different units. For more information about rescaling process and the supported concentration units, refer to the documentation of compute_scaling_factors().

Parameters

  • model_id ({"us_standard", "midlatitude_summer", "midlatitude_winter", "subarctic_summer", "subarctic_winter", "tropical"}, optional, default: "us_standard") – Model identifier.

  • levels (quantity or array, optional) – Altitude levels. The array must contain at least two values. If not provided, the atmospheric profile is built using the data set’s altitude levels.

  • concentrations (dict, optional) – Molecules concentrations as a {str: quantity} mapping.

Returns

Dataset – Atmosphere thermophysical properties.

Notes

[ACC+86] defines six models, listed in the table below.

AFGL (1986) atmospheric thermophysical properties models#

Model number

Model identifier

Model name

1

tropical

Tropic (15N Annual Average)

2

midlatitude_summer

Mid-Latitude Summer (45N July)

3

midlatitude_winter

Mid-Latitude Winter (45N Jan)

4

subarctic_summer

Sub-Arctic Summer (60N July)

5

subarctic_winter

Sub-Arctic Winter (60N Jan)

6

us_standard

U.S. Standard (1976)

Attention

The original altitude mesh specified by [ACC+86] is a piece-wise regular altitude mesh with an altitude step of 1 km from 0 to 25 km, 2.5 km from 25 km to 50 km and 5 km from 50 km to 120 km. Since the Eradiate kernel only supports regular altitude mesh, the original atmospheric thermophysical properties profiles were interpolated on the regular altitude mesh with an altitude step of 1 km from 0 to 120 km.

All six models include the following 10 molecular species: H2O, CO2, O3, N2O, CO, CH4, O2, NO, SO2 and NO2.