@Article{KishoreVVSBCSBB:2014:LoTrOb,
author = "Kishore, P. and Venkat Ratnam, M. and Velicogna, I. and Sivakumar,
V. and Bencherif, H. and Clemesha, Barclay Robert and Simonich,
Dale Martin and Batista, Paulo Prado and Beig, G.",
affiliation = "Department of Earth System Science, University of California,
Irvine, CA, 92697, United States and National Atmospheric Research
Laboratory (NARL), Department of Space, Gadanki, India and
Department of Earth System Science, University of California,
Irvine, CA, 92697, United States and School of Chemistry and
Physics, University of KwaZulu Natal, Durban, South Africa and
Laboratoire de l'Atmosph{\`e}re et des Cyclones, Universit{\'e}
de la R{\'e}union, Reunion-Island, France and {Instituto Nacional
de Pesquisas Espaciais (INPE)} and {Instituto Nacional de
Pesquisas Espaciais (INPE)} and {Instituto Nacional de Pesquisas
Espaciais (INPE)} and Indian Institute of Tropical Meteorology,
Pune, India",
title = "Long-term trends observed in the middle atmosphere temperatures
using ground based LIDARs and satellite borne measurements",
journal = "Annales Geophysicae",
year = "2014",
volume = "32",
number = "3",
pages = "301--317",
keywords = "air temperature, atmospheric dynamics, El Nino-Southern
Oscillation, lidar, mesosphere, meteorology, middle atmosphere,
solar cycle, stratosphere, time series, trend analysis, Brazil,
Gadanki, India, Mascarene Islands, Pacific Ocean, Pacific Ocean
(East), Pacific Ocean (West), Reunion, Santa Catarina, Sao Jose,
Tamil Nadu.",
abstract = "Long-term data available from Lidar systems located at three
different locations namely S{\~a}o Jos{\'e} dos Campos, Brazil
(23.2° S, 45.8° W), Gadanki (13.5° N, 79.2° E) and Reunion (20.8°
S, 55.5° E) have been used to investigate the long-term variations
like Annual, Semi-annual, Quasi-biennial, El Nino Southern
Oscillation and solar cycle. These oscillations are also extracted
from simultaneous satellite borne measurements of HALogen
Occultation Experiment (HALOE) instrument onboard UARS and SABER
onboard TIMED over these stations making largest time series
covering the entire middle atmosphere. A good agreement is found
between the LIDAR and satellite-derived amplitudes and phases
between 30 and 65 km altitude, which suggests that satellite
measurements can be used to investigate the long-term trends
globally. Latter measurements are extended to 80 km in order to
further investigate these oscillations. Large difference in the
amplitudes between the eastern pacific and western pacific is
noticed in these oscillations. Changing from cooling trends in the
stratosphere to warming trends in the mesosphere occurs more or
less at altitude around 70 km altitude and this result agrees well
with that observed by satellite measurements reported in the
literature. The peak in the cooling trend does not occur at a
fixed altitude in the stratosphere however maximum warming trend
is observed around 75 km at all the stations. The observed
long-term trends including various oscillations are compared with
that reported with various techniques. © Author(s) 2014. CC
Attribution 3.0 License.",
doi = "10.5194/angeo-32-301-2014",
url = "http://dx.doi.org/10.5194/angeo-32-301-2014",
issn = "0992-7689",
label = "scopus 2014-05 KishoreVVSBCSBB:2014:LoTrOb",
language = "en",
targetfile = "2014angeo_KishoreLongTermTrends.pdf",
urlaccessdate = "15 jun. 2024"
}