Millimeter Wave Atmospheric Sounder

> Data Utilization Software Tools (DUST-2)
> MAS-Principal Investigators (PI's) and Team (1996)
> Abstract
> History, Technique, Contributors/participants
> Hardware and software contributors in addition to the PI institutes
> MAS Co-Investigators
> MAS Scientific Data
> Publications by MPS members

MAS-Principal Investigators (PI's) and Team (1996)


MAS is a remote sensing instrument for passive sounding of the Earth's atmosphere from the NASA Space Shuttle. Millimeter-wave radiation emitted by the atmosphere in the height range between 10 km and 100 km have been measured at 61, 62, 63, 183, 184, and 204 GHz. MAS yields information about the altitude profiles of temperature (T), and pressure (P) as well as for water vapour (H2O), ozone (O3), and chlorine monoxide (ClO) in the stratosphere, and mesosphere, in the latitude range between +-72 degree for an orbit inclination of the Shuttle of 57 degree. ClO plays the major role in the catalytic, anthropogenic ozone destruction.

At the invitation of the US Space Agency, NASA, MAS was successfully flown as part of > ATLAS (Atmospheric Laboratory for Applications and Science) mission 1, (March 24th - April 2nd, 1992) and ATLAS mission 2 (April 8th - April 17th, 1993). ATLAS 1 and 2 occurred during the flight of the Upper Atmosphere Research Satellite (UARS), and MAS supplied important correlative data. During ATLAS-3, which flew from November 3rd till November 14th, 1994, MAS had a failure in its data processing unit after MAS took 10 hours of excellent atmospheric data.

History, Technique, Contributors/participants

The history of MAS goes back to 1978; hardware was built beginning in 1983. MAS was delivered to the Kennedy Space Flight Center in March 1990 for integration into the ATLAS 1 payload.

The observations on board the Shuttle have been supplemented by measurements of atmospheric millimeter-wave radiation from the ground and from airplanes in conjunction with overflights by the Shuttle.

> Some technical data:

Mass: 200 kg
Power consumption: 406 W
Data rate: 86.4 KBit/s
Antenna (main reflector) aperture: 1.0 m x 1.3 m
Dimensions (LxWxH): 1.28 x 1.34 x 1.73 m
Spectral resolution: 240 channels (12 Bit)

> MAS-Configuration on ATLAS-Pallet

Hardware and software contributors in addition to the PI institutes

MAS Co-Investigators

2009, Max Planck Institute for
Solar System Research, Lindau