Rayleigh LIDAR and satellite observation of gravity waves in southern Patagonia, Argentina

SALVADOR J, WOLFRAM E, ORTE F, QUIROGA J; QUEL E; OYAMA H, MIZUNO A

Foz de Iguazu

Simposio; 2nd COSPAR Symposium; 2015

In the framework of SATREPS Program (Science and Technology Research Partnership for Sustainable Development), structured as a collaboration between the Japan Science and Technology Agency (JST) and the Japan International Cooperation Agency (JICA), government of Japan, Argentina and Chie execute joint research project called ? SAVER-Net Project?. The Atmospheric Observatory of Austral Patagonia (OAPA) is a part of this project. It is a remote sensing site located near the Río Gallegos city in South Patagonia, Argentina at subpolar region affected by the polar vortex and the ozone depletion. It is a convenient monitoring site of the atmosphere in the southern hemisphere especially for ozone and temperature studies in the middle atmosphere. In the site is operating a differential absorption LIDAR instrument (DIAL) for the measurement of ozone vertical distribution. The DIAL is part of Network Data for Atmospheric Composition Change (NDACC) since December 2008. In this work we analyze the characteristics of mid-latitude middle atmospheric gravity wave presented in the temperature profiles computing from the off-wavelength at 355 nm of a Rayleigh LIDAR measurements made at Río Gallegos (51º 55?S, 69º 14?W). We focused over the spring season (Sep, Oct and Nov.) during five years (2009 - 2014).The gravity wave characteristics are presented in terms of vertical wave number and frequency spectra, along with the estimated potential energy for the spring season. The computed wave number spectra for the stratosphere are found and compared with complementary satellite instrument using the availability of GPS radio signals introduced as a new and promising remote sensing technique for the Earth?s atmosphere from Constellation Observation System for Meteorology Ionosphere and Climate (COSMIC)/Formosa Satellite-3 (FORMOSAT-3) which was launched in April 2006.