Two decades of long-term observations of polar mesospheric echoes at 69 N

R Latteck, T Renkwitz, JL Chau - Journal of Atmospheric and Solar …, 2021 - Elsevier
Since 1999 radar continuous observations of polar mesospheric echoes have been
conducted on the Norwegian island of Andøya (69.30° N, 16.04° E), with the ALWIN radar …

Extended observations of polar mesosphere winter echoes over Andøya (69 N) using MAARSY

R Latteck, I Strelnikova - Journal of Geophysical Research …, 2015 - Wiley Online Library
Abstract Continuous observations of Polar Mesosphere Winter Echoes (PMWE) have been
conducted at the Norwegian island Andøya (69.30° N, 16.04° E) since autumn 2004 using …

Observation of Kelvin–Helmholtz instabilities and gravity waves in the summer mesopause above Andenes in Northern Norway

G Stober, S Sommer, C Schult… - Atmospheric …, 2018 - acp.copernicus.org
We present observations obtained with the Middle Atmosphere Alomar Radar System
(MAARSY) to investigate short-period wave-like features using polar mesospheric summer …

Discovery of two distinct types of equatorial 150 km radar echoes

JL Chau, E Kudeki - Geophysical Research Letters, 2013 - Wiley Online Library
We show here that VHF signals scattered from the 150 km region above Jicamaca exhibit
two distinct types of features. In one type (type A), the Doppler spectral width increases with …

Solar flare effects on 150‐km echoes observed over Jicamarca: WACCM‐X simulations

NM Pedatella, JL Chau, J Vierinen… - Geophysical …, 2019 - Wiley Online Library
Abstract Jicamarca Radio Observatory observations and Whole Atmosphere Community
Climate Model with thermosphere‐ionosphere eXtension (WACCM‐X) simulations are used …

Height variation of gaps in 150‐km echoes and Whole Atmosphere Community Climate Model electron densities suggest link to upper hybrid resonance

GA Lehmacher, H Wu, E Kudeki… - Journal of …, 2020 - Wiley Online Library
Radar echoes from the daytime lower region near the magnetic equator, so‐called 150‐km
echoes, have been puzzling researchers for decades. Neither the mechanisms that …

[PDF][PDF] 北京犕犛犜雷达探测中间层 低热层观测结果初步分析

田玉芳, 吕达仁 - 地球物理学报, 2016 - researchgate.net
摘要北京MST 雷达是子午工程建设的国内仅有的两部MST 雷达之一, 为研究其在中间层
低热层MLT 区域的探测能力以及数据可靠性, 本文应用北京MST 雷达2012, 2013 …

VIPIR and 50 MHz radar studies of gravity wave signatures in 150‐km echoes observed at Jicamarca

PM Reyes, E Kudeki, GA Lehmacher… - Journal of …, 2020 - Wiley Online Library
Abstract Range‐time‐intensity (RTI) plots of 50 MHz radar backscatter detected at Jicamarca
from the 150‐km region of the equatorial ionosphere exhibit necklace‐shaped multilayered …

Simultaneous observations of polar mesosphere winter echoes and cosmic noise absorptions in a common volume by the PANSY radar (69.0 S, 39.6 E)

T Nishiyama, K Sato, T Nakamura… - Journal of …, 2018 - Wiley Online Library
This study focuses on the one‐to‐one relationship between the morphology of polar
mesosphere winter echo (PMWE) and cosmic noise absorption (CNA) as determined by …

Preliminary analysis of Beijing MST radar observation results in the mesosphere-lower thermosphere

YF TIAN, DR LÜ - Chinese Journal of Geophysics, 2016 - en.dzkx.org
Beijing MST radar is one of the Chinese Meridian Project constructions of only two domestic
MST radars. It was built by Institute of Atmospheric Physics, Chinese Academy of Sciences …