Search Results - "SIGERNES, F"

Northeastward‐Moving Auroral Forms From Possible High‐Latitude Reconnection by Fasel, G. J., Mann, J., Lee, L. C., Lee, S. H., Sigernes, F., Robison, A., Tarditi, S.

“…This study presents a number of previously unreported auroral features that form shortly after the IMF Bz ${\mathrm{B}}_{\mathrm{z}}$–component turns sharply…”
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In situ measurement of a newly created polar cap patch by Lorentzen, D. A., Moen, J., Oksavik, K., Sigernes, F., Saito, Y., Johnsen, M. G.

“…The Investigation of Cusp Irregularities 2 sounding rocket was launched 5 December 2008 at 1035 UT. We present an overview of the associated solar wind and…”
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The Cusp as a VLF Saucer Source: First Rocket Observations of Long‐Duration VLF Saucers on the Dayside by Moser, C., LaBelle, J., Hatch, S., Moen, J. I., Spicher, A., Takahashi, T., Kletzing, C. A., Bounds, S., Oksavik, K., Sigernes, F., Yeoman, T. K.

“…Auroral whistler‐mode radio emissions called saucers are of fundamental interest because they require an unusually stationary emission process in the dynamic…”
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Correlation between the solar wind speed and the passage of poleward-moving auroral forms into the polar cap by Fasel, G. J., Lee, L. C., Lake, E., Csonge, D., Yonano, B., Bradley, O., Briggs, J., Lee, S. H., Mann, J., Sigernes, F., Lorentzen, D.

“…In 1961, Dungey suggested that magnetic reconnection occurs due to the solar-terrestrial interaction. The interplanetary magnetic field (IMF) is thought to…”
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Multi-instrument observations from Svalbard of a traveling convection vortex, electromagnetic ion cyclotron wave burst, and proton precipitation associated with a bow shock instability by Engebretson, M. J., Yeoman, T. K., Oksavik, K., Søraas, F., Sigernes, F., Moen, J. I., Johnsen, M. G., Pilipenko, V. A., Posch, J. L., Lessard, M. R., Lavraud, B., Hartinger, M. D., Clausen, L. B. N., Raita, T., Stolle, C.

“…An isolated burst of 0.35 Hz electromagnetic ion cyclotron (EMIC) waves was observed at four sites on Svalbard from 0947 to 0954 UT 2 January 2011, roughly 1 h…”
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Review of mesospheric temperature trends by Beig, G., Keckhut, P., Lowe, R. P., Roble, R. G., Mlynczak, M. G., Scheer, J., Fomichev, V. I., Offermann, D., French, W. J. R., Shepherd, M. G., Semenov, A. I., Remsberg, E. E., She, C. Y., Lübken, F. J., Bremer, J., Clemesha, B. R., Stegman, J., Sigernes, F., Fadnavis, S.

“…In recent times it has become increasingly clear that releases of trace gases from human activity have a potential for causing change in the upper atmosphere…”
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Ground-based and additional science support for SMILE by A. Carter, J., Dunlop, M., Forsyth, C., Oksavik, K., Donovon, E., Kavanagh, A., E. Milan, S., Sergienko, T., C. Fear, R., G. Sibeck, D., Connors, M., Yeoman, T., Tan, X., G. G. T. Taylor, M., McWilliams, K., Gjerloev, J., Barnes, R., D. Billet, D., Chisham, G., Dimmock, A., P. Freeman, M., Han, D.-S., D. Hartinger, M., W. Hsieh, S.-Y., Hu, Z.-J., K. James, M., Juusola, L., Kauristie, K., A. Kronberg, E., Lester, M., Manuel, J., Matzka, J., McCrea, I., Miyoshi, Y., Rae, J., Ren, L., Sigernes, F., Spanswick, E., Sterne, K., Steuwer, A., Sun, T., Walach, M.-T., Walsh, B., Wang, C., Weygand, J., Wild, J., Yan, J., Zhang, J., Zhang, Q.-H.

“…The joint European Space Agency and Chinese Academy of Sciences Solar wind Magnetosphere Ionosphere Link Explorer(SMILE)mission will explore global dynamics of…”
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Tropopause height at 78° N 16° E: average seasonal variation 2007–2010 by Hall, C. M., Hansen, G., Sigernes, F., Kuyeng Ruiz, K. M.

“…We present a seasonal climatology of tropopause altitude for 78° N 16° E derived from observations 2007–2010 by the SOUSY VHF radar on Svalbard. The spring…”
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Inferring hydroxyl layer peak heights from ground-based measurements of OH(6-2) band integrated emission rate at Longyearbyen (78° N, 16° E) by MULLIGAN, F. J, DYRLAND, M. E, SIGERNES, F, DEEHR, C. S

“…Measurements of hydroxyl nightglow emissions over Longyearbyen (78° N, 16° E) recorded simultaneously by the SABER instrument onboard the TIMED satellite and a…”
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Visible/Near-Infrared Spectroscopy: A New Tool for the Evaluation of Fish Freshness by Nilsen, H, Esaiassen, M, Heia, K, Sigernes, F

“…The freshness as storage time in ice of cod (Gadus morhua) and salmon (Salmo salar) was estimated by visible/near infrared (VIS/NIR) spectroscopy. The…”
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Traveling planetary wave activity from mesopause region airglow temperatures determined by the Network for the Detection of Mesospheric Change (NDMC) by Reisin, E.R., Scheer, J., Dyrland, M.E., Sigernes, F., Deehr, C.S., Schmidt, C., Höppner, K., Bittner, M., Ammosov, P.P., Gavrilyeva, G.A., Stegman, J., Perminov, V.I., Semenov, A.I., Knieling, P., Koppmann, R., Shiokawa, K., Lowe, R.P., López-González, M.J., Rodríguez, E., Zhao, Y., Taylor, M.J., Buriti, R.A., Espy, P.J., French, W.J.R., Eichmann, K.-U., Burrows, J.P., von Savigny, C.

“…The global distribution of traveling planetary wave (PW) activity in the mesopause region is estimated for the first time from ground-based airglow…”
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Tropopause height at 78 degrees N 16 degrees E: average seasonal variation 2007-2010 by Hall, Chris, Hansen, Georg Heinrich, Sigernes, F, Kuyeng, Karim

“…We present a seasonal climatology of tropopause altitude for 78° N 16° E derived from observations 2007–2010 by the SOUSY VHF radar on Svalbard. The spring…”
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Improved estimates for neutral air temperatures at 90 km and 78°N using satellite and meteor radar data by Dyrland, M. E., Hall, C. M., Mulligan, F. J., Tsutsumi, M., Sigernes, F.

“…A technique for using satellite‐derived temperatures to calibrate initial estimates of 90 km temperatures measured by meteor wind radar is presented…”
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Hydroxyl rotational temperature record from the auroral station in Adventdalen, Svalbard (78°N, 15°E) by Sigernes, F., Shumilov, N., Deehr, C. S., Nielsen, K. P., Svenøe, T., Havnes, O.

“…This is an evaluation of the daily mesospheric winter temperature series derived from more than 20 years of ground‐based spectral measurements of the hydroxyl…”
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Electron temperature in the cusp as measured with the SCIFER-2 sounding rocket by Lund, E. J., Lessard, M. R., Sigernes, F., Lorentzen, D. A., Oksavik, K., Kintner, P. M., Lynch, K. A., Huang, D. H., Zhang, B. C., Yang, H. G., Ogawa, Y.

“…It is expected that energy deposited by soft auroral electron precipitation in the ionosphere should result in heating of ionospheric electrons in that…”
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Response of OH airglow temperatures to neutral air dynamics at 78°N, 16°E during the anomalous 2003-2004 winter by Dyrland, M. E., Mulligan, F. J., Hall, C. M., Sigernes, F., Tsutsumi, M., Deehr, C. S.

“…Hydroxyl (OH) brightness temperatures from the mesopause region derived from temperature profiles from the Sounding of the Atmosphere using Broadband Emission…”
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First results of the refurbished SOUSY radar: Tropopause altitude climatology at 78°N, 16°E, 2008 by Hall, C. M., Röttger, J., Kuyeng, K., Sigernes, F., Claes, S., Chau, J.

“…The second generation SOUSY MST radar at 78°N, 16°E on Svalbard has recently completed its inaugural year of combined troposphere and mesosphere observations…”
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On the influence of background dust on radar scattering from meteor trails by Havnes, Ove, Sigernes, F.

“…We consider the influence of a possible background of mostly non-visual neutral or positively charged dust, on the diffusion of the ionized meteor trails…”
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Neutral air temperatures at 90 km and 70°N and 78°N by Hall, C. M., Aso, T., Tsutsumi, M., Höffner, J., Sigernes, F., Holdsworth, D. A.

“…Meteor radars are employed to determine neutral air temperatures at 90 km altitude above Adventdalen, Spitsbergen (78°N, 16°E) and Ramfjordmoen, mainland…”
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Auroral all-sky camera calibration by Sigernes, F, Holmen, S. E, Biles, D, Bjørklund, H, Chen, X, Dyrland, M, Lorentzen, D. A, Baddeley, L, Trondsen, T, Brändström, U, Trondsen, E, Lybekk, B, Moen, J, Chernouss, S, Deehr, C. S

“…A two-step procedure to calibrate the spectral sensitivity to visible light of auroral all-sky cameras is outlined. Center pixel response is obtained by the…”
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