Presentation on theme: "Argentina and the study of the Ozone Hole in Antarctica Instituto Antártico Argentino."— Presentation transcript:
Argentina and the study of the Ozone Hole in Antarctica Instituto Antártico Argentino
The frequent overpass of the Antarctic Ozone Hole each spring, the extreme UV radiation levels over the northwestern Andean Plateau and their effects, puts the territory of Argentina at a strategic situation for atmospheric ozone and solar UV radiation studies. Research within Argentinas institutions in these subjects is at present significant. There is a strong political decision to sustain the investigations, as many of the research projects are economically supported directly by Argentinas Government. Argentinas private institutions participate also with increasing interest and support in these research fields. Support for collaboration with international projects was also strengthened with both logistic and scientific support, including monitoring and modeling of ozone, UV radiation and related parameters along the National territory and principally in Argentinas Antarctic stations.
New sophisticated equipment has been incorporated by several Argentinas institutions (e.g. spectroradiometers), including instrumentation developed in Argentina (e.g. LIDAR). The efforts to maintain the monitoring networks are being fruitful. Several databases are reaching an extension of decades, allowing an estimation of the climatological behavior of measured parameters. The extent of springtime Antarctic Ozone Hole each year is still very significant and concerning for the region. It passed over the continent several times within the period emphasizing the need to closely follow its monitoring and study.
Because of the extreme meteorological conditions during the winter, stratospheric polar clouds with very low temperatures (-80 are formed at the antartic polar stratosphere, which retain Cl and Br ODSs. During spring time when they melt, these compounds are released to react with ozone molecules. ¿Why do we have this particular situation over Antarctica? Polar Vortex isolates the polar region Because of the extreme meteorological conditions during the winter, stratospheric polar clouds with very low temperatures (-80 ° C) are formed at the antartic polar stratosphere, which retain Cl and Br ODSs. During spring time when they melt, these compounds are released to react with ozone molecules.
The study of the ozone depletion phenomenon in Antartica, has been a high priority within the Argentine Antarctic Programe. It has been developed by the Instituto Antártico Argentino through a policy of scientific collaboration with foreing institutions. We have been continuously monitoring this phenomena for more than a decade using different instruments and measurement technics at the Argentine Antarctic stations Belgrano, San Martin and Marambio as well as at Ushuaia (southernmost South America).
INTA, Instituto Nacional de Técnica Aeroespacial, Spain. FMI, Instituto Nacional Meteorológico, Finland INM, Instituto Nacional de Meteorología, Spain. ICH, Instituto Hidrometeorológico Checo, Czech Republic IFAR Instituto de Física Atmosférica de Roma, Italy. -Ozone soundings and surface ozone measurements in Belgrano station and spectrometry using DOAS (Differential Optical Absortion Spectroscopy) technics and LIDAR for PSC detection are carried out in collaboration with INTA (Spain). -Spectrometry with a Brewer MKIV instrument and ozone soundings in Marambio station are carried out together with the FMI (Finland) and radiometry with the INM (Spain) and FMI (Finland). Since 2010 with the ICH spectrometry and radiometry with the Brewer #199 instrument at Marambio station. -At San Martín station we used to have a Brewer MKIV spectrometer (it is in Buenos Aires for calibration at the present time). Argentina and its foreing partners
Argentina and the WMO Our data is delivered to the WMO and is freely available to the scientific community. It is published in the Antarctic ozone bulletins annually distributed by WMO (World Meteorological Organization). Map modified from the WMO bulletin number 1/2011 showing the location of Antarctic stations that provide ozone data. Argentina contributes with data from four locations (3 in Antarctica and 1 in South America).
Activity in Belgrano and Marambio stations Spectrometers at Marambio station Activities at Belgrano station: balloon release for ozone soundings and Brewer spectrometer on ground. The graphic shows the excellent correlation among data collected by OMI satellite, Brewer measurements and balloon ozone soundings.
Argentina and the Czech Republic In February 2010 the Dirección Nacional del Antártico - Instituto Antártico Argentino signed an agreement with the Czech Hydrometeorological Institute for collaboration in ozone measurements using ground- deployed instruments at the Argentine Marambio station, Antarctica. Data provided for the Brewer Instruments is very valuable and also an important reference for other measurements at Marambio station.
For further information, contact: Dr. Sergio A. Marenssi Director del Instituto Antártico Argentino Thank you very much