Command line interface

alcf-simulate – Simulate lidar measurements from model data using COSP.

Synopsis

alcf simulate <type> [<options>] [--] <input> <output>

Description

Arguments following -- are treated as literal strings. Use this delimiter if the input or output file names might otherwise be interpreted as non-strings, e.g. purely numerical file names.

Arguments

• type: Type of lidar to simulate.
• input: Input filename or directory (the output of “alcf model”).
• output: Output filename or directory.
• options: See Options below.

Types

• caliop: CALIPSO/CALIOP.
• chm15k: Lufft CHM 15k.
• ct25k: Vaisala CT25K. IMPORTANT: The simulator currently assumes wavelength of 910 nm instead of the actual instrument wavelength of 905 nm.
• cl31: Vaisala CL31.
• cl51: Vaisala CL51.
• cl61: Vaisala CL61.
• minimpl: Sigma Space MiniMPL.
• mpl: Sigma Space MPL.

Options

• keep_vars: { <var>... }: Keep the listed input variables. The variables are expected to be prefixed with input_ in the input. Default: { }.
• ncolumns: <ncolumns>: Number of SCOPS subcolumns to generate. Default: 10.
• overlap: <overlap>: Cloud overlap assumption in the SCOPS subcolumn generator. maximum for maximum overlap, random for random overlap, or maximum-random for maximum-random overlap. Default: maximum-random.

Examples

Simulate a Vaisala CL51 instrument from model data in alcf_merra2_model previously extracted using alcf model and store the output in the direcctory alcf_merra2_simulate.

alcf simulate cl51 alcf_merra2_model alcf_merra2_simulate