Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.naic.edu/vscience/schedule/tpfiles/SmithtagT1676tp.ps Дата изменения: Mon Apr 19 20:00:05 2004 Дата индексирования: Sat Dec 22 21:16:11 2007 Кодировка: Поисковые слова: earth's atmosphere

Proposal Identication No.: T1676 Date Received: 2002-May-31 20:36:30
Technical Page
Proposal Type: Regular
General Category: Terrestrial Aeronomy
Observation Category: Middle-Lower Atmosphere
Total Time Requested: 20 Hours
Proposal Title: Coordinated Multi-instrument Measurements of Gravity Wave Dynamics in the
Night-time Mesopause Region at Arecibo, Puerto Rico
ABSTRACT:
Short-period internal gravity wave oscillations (T<1 hour) contribute signicantly to the energy and momentum
budget in the 80 to 150 km region of the Earth's atmosphere. Gravity waves have been studied for many years
using several radar, optical and in-situ rocket techniques. All-sky imaging systems directly image the nighttime
gravity wave activity in several naturally-occurring emission layers (OH, Na, and OI, for example) in the
mesopause region (80{100 km). The local temperature and wind velocity proles are important parameters
governing wave propagation. Hence, a cluster of co-located instruments capable of making such measurements,
and supported by modeling and interpretation, is necessary for a state-of-the-art analysis of a particular wave
event imaged with an all-sky system. The Boston University All-Sky Imaging System (BUASIS) has recently
been installed at Arecibo Observatory. It will be part of a proposed coordinated multi-instrument study to
investigate the relationship between the occurrence of monochromatic gravity waves in the nighttime mesospheric
OH, Na and OI emissions and the simultaneous temperature and wind structure in the region. Observing time
with several optical instruments at Arecibo Observatory and with the Arecibo incoherent scatter radar is
requested during two 5-day periods in May and June 2003. The campaign will also include near-simultaneous
measurements by the NASA Thermosphere-Ionosphere-Mesosphere Energetics and Dynamics (TIMED) satellite
mission. Six yovers will occur during the proposed periods.
Name Institution E-mail Phone Student
Steven M Smith Boston University smsm@bu.edu 617-353-1531 no
Service Observing Request Remot e Observing Request
X None No
All of the observing run. Maybe
Part of the observing run. X Yes
Queue Observing
Instrument Setup
1

Atmospheric Observation Instruments:
Tilt-Photometer Spectrophotometer Fabry-Perot Lidar
Description of Observer Equipment: Bare CCD all-sky imager recording OH, Na and O(1S)
mesospheric emissions during campaign periods.
Special Equipment or setup: None
RFI Considerations
Frequency Ranges Planned
2