Estimation of temperatures in the upper mesosphere using meteor decay times observed on 32.55 MHz and 53.5 MHz

Updated 2003-03-10

Objective 1: Proof of the possibility to estimate temperatures from meteor decay times using co-located, simultaneous meteor observations on two, well separated frequencies (32.55 MHz/SKiYMET radar and 53.5 MHz/ALWIN MST radar) without the assumption of a predetermined temperature gradient. The second method for determining temperature height profiles uses the direct measurement of the ambipolar diffusion coefficient in conjunction with pressure data to estimate temperatures. Pressure data from empirical models are often too unreliable, therefore pressure data derived from rocket-borne falling spheres measurements could be used for a reliable temperature determination. Objective 2: Proof of the method using co-located meteor radar measurements and falling sphere soundings conducted in 2002 at Andenes (69N) during the MaCWAVE campaign. It should be possible to estimate meteor temperature profiles in a height range between 82 km and about 94 km.

Time frame

Status
Ongoing
Project time span
2003 - 2003
Data collection
not specified
Data processing
not specified
Data reporting
not specified

Contact information

Contact person
J. Lunde
Address
ALOMAR Observatory And√łya Rocket Range P.O Box 54 8483 Andenes
Phone
+47 76 14 11 00
Fax
+47 76 14 44 01
Email
on.egnartekcor@ramola

Parameters and Media

Not specified

Geography

Regions studied
ALOMAR Observatory

Data availability

Samples/specimens archived in specimen banks?
No

Methods & Procedures

Not specified

Additional Information

Is this a bi- AND multi-lateral project (i.e. a project involving cooperation between different countries)?
No
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