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The 'CAMP' Campaign 1982

Document ID: 67

Kopp, E.¹
Bertin, F.²
Bjorn, L. G.³
Dickinson, P. H. G.⁴
Philbrick, C. Russell⁵
Witt, G.⁶

¹ University of Bern, Pliysikalisches lnstitut, Bern, Switzerland
² CRPE, 94107 Saint-Maur des Fossés, France
³ Swedish Space Corporation, Solna, Sweden
⁴ Rutherford Appleton Laboratory, Chilton, Didcot. Oxon. U.K.
⁵ USAF, Geophysics Laboratory, Hanscom AFB, Bedford, MA, U.S.A.
⁶ University of Stockholm, Meteorological Observatory, Stockholm, Sweden
 

Presented: 7th ESA Symposium on European Rocket & Balloon Programmes and Related Research
Loen, Norway, 5-11 May 1985

Abstract

The Cold Arctic Mesopause Project (CAMP) was con­ducted at Esrange, Sweden, in July/August 1982. Seven rockets were launched on August 3/4 during a period of noctilucent cloud (NLC) sighting over Esrange. A second salvo with three rocket launch­ings occurred on August 11/12 but without a NLC sighting. The presence of NLC on August 3/4 was confirmed by several rocket-borne photometer and plasma probe profiles. The NLC height was 83±1 km. Before and during the main salvo high magnetic disturbance was present with 1.7 db absorption on the 27 MHz riometer and a -480 nT north-south magnetic field bay. Accordingly high positive ion densities of 2.5x10⁵cm^-3 at 90 km and 1.6x10⁴cm^-3 at 80 km were measured in the lower ionosphere. The temperature measurements showed, that their profiles in the stratosphere and lower mesosphere were near the expected values as pre­dicted by high latitude summer models. At altitudes between 83-94 km a wave structure with three temperature minima of 139 K, 114 K and 111 K was observed. The 138 K temperature minimum was loca­ted at the height of the observed NLC. Positive and negative ion composition measurements were obtained from four rocket flights. Atomic oxygen was measured in both salvoes between 65-135 km using resonance fluorescence and absorption at 130 nm. Nitric oxide densities could be inferred from positive ion composition measurements.

 

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Keywords: middle atmosphere, summer mesosphere, polar region, Rocket Campaign

Citation:

"The 'CAMP' Campaign 1982", Kopp, E., F. Bertin, L. G. Bjorn, P. H. G. Dickinson, C. R. Philbrick, G. Witt, Proceedings of the 7th ESA Symposium on European Rocket & Balloon Programmes and Related Research, European Space Agency (ESA), 1985, pp. 117 - 123