Accession Number:

ADA370997

Title:

NAM6: Batch Code for the Navy Aerosol Model

Descriptive Note:

Final rept.

Corporate Author:

SPACE AND NAVAL WARFARE SYSTEMS CENTER SAN DIEGO CA

Personal Author(s):

Report Date:

1999-10-01

Pagination or Media Count:

68.0

Abstract:

This report describes the operation of a computer program that calculates optical extinction according to the Navy Aerosol Model NAM. The Navy Aerosol Model is an empirical model describing the size distribution of aerosol particles close to the surface of the open ocean. The model depends on four parameters 1 p, the dimensionless air mass parameter 2 W, the average wind speed m s-1 during the previous 24 hours 3 w, the current wind speed m s-1 and 4 U, the relative humidity . These parameters completely specify dNdr, the particle size distribution in the Navy Aerosol Model. The information in this report refers solely to the sixth version of the Navy Aerosol Model NAM6, the version that is the kernel of the Navy Oceanic Vertical Aerosol Model. When NAM6 runs on a 333 MHz Pentium II computer, an input file containing a thousand lines will execute in slightly less than 1 minute. This speed is obtained with default precision settings for which the absolute accuracy is measured as approximately 5 for extinction and 10 for phase. Program precision is under the control of the user, however, and accuracy may be increased, up to a point, by increasing precision and sacrificing speed.

Subject Categories:

  • Physical and Dynamic Oceanography
  • Computer Programming and Software

Distribution Statement:

APPROVED FOR PUBLIC RELEASE