Accession Number : ADA134256

Title :   A Simple Boom Assembly for the Shipboard Deployment of Air-Sea Interaction Instruments.

Descriptive Note : Special rept.,


Personal Author(s) : Andreas,Edgar L ; Rand,John H ; Ackley,Stephen F

PDF Url : ADA134256

Report Date : Sep 1983

Pagination or Media Count : 19

Abstract : We have developed a simple boom for use in measuring meteorological variables from a ship. The main structural member of the boom, a triangular communications tower with rollers attached along its bottom side, is deployed horizontally from a long, flat deck, such as a helicopter deck, and will support a 100-kg payload at its outboard end. The boom is easy to deploy, requires minimal ship modifications, and provides ready access to the instruments mounted on it. And because it is designed for use with the ship crosswind, oceanographic work can go on at the same time as the air-sea interaction measurements. We describe our use of the boom on the Mikhail Somov during a cruise into the Antarctic sea ice and present some representative measurements made with instruments mounted on it. Theory, experiment, and our data all imply that instruments deployed windward from a rear helicopter deck can reach air undistrubed by the ship. Such an instrument site has clear advantages over the more customary mast, bow, or buoy locations. (Author)

Descriptors :   *Meteorological instruments, *Booms(Equipment), Shipboard, Antarctic regions, Oceans, Sea ice, Heat, Momentum, Flux(Rate), ATmospheric temperature, Humidity, Wind velocity, Wind direction, Measurement, Marine meteorology

Subject Categories : Meteorology
      Physical and Dynamic Oceanography

Distribution Statement : APPROVED FOR PUBLIC RELEASE