Topside ionospheric electron temperature and density along the Weddell Sea latitude

• Published in: Journal of Geophysical Research: Space Physics
• Main Authors: Liu, J.Y., Chang, F.Y., Oyama, K.I., Kakinami, Y, Yeh, H.C., Yeh, T.L., Jiang, S.B., Parrot, Michel
• Other Authors: Institute of Space Science Taiwan, National Central University Taiwan (NCU), Center for Space and Remote Sensing Research Taïwan (CSRSR), National Space Program Origination, School of Systems Engineering, Department of Mechanical Engineering, National Cheng Kung University (NCKU), Laboratoire de Physique et Chimie de l'Environnement et de l'Espace (LPC2E), Observatoire des Sciences de l'Univers en région Centre (OSUC), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales Paris (CNES), National Space Organization grant (Taiwan-Russia Satellite Project) 97-NSPO(B)-SE-FA07-02 and the Ministry of Science and Technology103-2628-M-008-001National Space Organization grant (Taiwan-Russia Satellite Project) 97-NSPO(B)-SE-FA07-02 and the Ministry of Science and Technology103-2628-M-008-001
• Format: Article in Journal/Newspaper
• Language: English
• Published: HAL CCSD 2015
• Subjects: [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph]; Weddell Sea
• Online Access: https://insu.hal.science/insu-01122160; https://insu.hal.science/insu-01122160/document; https://insu.hal.science/insu-01122160/file/jgra51493.pdf; https://doi.org/10.1002/2014JA020227

Tatiana-2 datacan be obtained from S.B. Jiang atthe National Central University([e-mail]).FORMOSAT-3/COSMIC data areavailable at Taiwan Analysis Centerfor COSMIC (http://tacc.cwb.gov.tw/)and/or COSMIC Data Analysis andArchival Center (http://cdaac-www.cosmic.ucar.edu/cdaac/), whileDEMETER data can be retrieved fromhttp://demeter.cnrs-orleans.fr/. International audience It has been well known that the ionospheric electron density N e is greater in the summer nighttime than daytime around the Weddell Sea region, which is named Weddell Sea Anomaly (WSA). This paper for the first time reports unusual increases (decreases) of the daytime (nighttime) electron temperature T e at about 830 km altitude over the WSA latitudes probed by Tatiana-2 during December 2009 to January 2010. Concurrent measurements at 660–830 km altitude observed by Tatiana-2, Detection of ElectroMagnetic Emissions Transmitted from Earthquake Regions (DEMETER), and Formosa Satellite 3/Constellation Observing System for Meteorology, Ionosphere and Climate (F3/C) reveal the anticorrelation between T e and N e along the WSA latitudes in the daytime and nighttime. Based on F3/C N e along the WSA latitudes observed at various local times, the associated T e values are computed. The Tatiana-2 and DEMETER observations as well as the computed results show that T e yield the maximum values over the WSA region during daytime and over the Indian and Atlantic Ocean area during nighttime. The maxima or minima in F3/C N e and the computed T e reveal eastward phase shifts.