This document is for version 1 of the document.

/Info

Contains the standard datasets described in DIRSIG HDF Standard Info Section.

/Conditions

Type

Group

Contains datasets for all of the atmospheric conditions in the file.

/Conditions/:name

Type

Dataset

Data Type

NATIVE_FLOAT

Dataspace Type

Simple

Dimensions

N x M

Contains the spectral curves for the atmospheric conditions called :name. The width of this table is the same as that of /SpectralSamples and columns in this table correspond to wavelengths stored in that table. The curves for solar declination sample in column i of /SolarDeclinationSamples can be found according to the following table.

Curve Row Units

Ground-reaching solar irradiance

4 * i

W / (cm^2 micron)

Path radiance per meter

4 * i + 1

W / (cm^2 sr m micron)

Path extinction per meter

4 * i + 2

1 / m

Hemispherical sky irradiance

4 * i + 3

W / (cm^2 micron)

/SolarDeclinationSamples

Type

Dataset

Data Type

NATIVE_FLOAT

Dataspace Type

Simple

Dimensions

1 x M

Contains the solar declination samples for all atmospheric conditions found in this file. Samples will be sorted in ascending order and are in degrees.

/SpectralSamples

Type

Dataset

Data Type

NATIVE_FLOAT

Dataspace Type

Simple

Dimensions

1 x M

Contains the wavelengths values in microns for all spectral curves found in the file.