Variacion del espesor óptico de aerosol en la estacion antartica peruana Machu Picchu
Date
Journal Title
Journal ISSN
Volume Title
Publisher
Revista Boliviana de Física
Abstract
En este trabajo se describe los resultados del estudio del espesor optico de aerosol (EOA) durante la campaa de mediciones y monitoreos realizada en la XVII y XXI Expedicion Antartica Peruana (enero de 2007 y febrero de 2013 respectivamente), en la Estacion Cientıfica Antartica Machu Picchu (ECAMP) a 62°05'30" S, 58°28'16" W y 6 msnm. Se utilizo un fotometro solar SP02-L, comprendido dentro del marco instrumental del Ano Polar Internacional, que dispone de 4 canales: 412 nm, 500 nm, 675 nm y 862 nm, lo que permitio medir espectros de irradiacion directa. El resultado calculado para el promedio del EOA en latitudes polares es 0,0551 ± 0,0139, que es el valor mas bajo del mundo (en el canal de 500 nm) durante los veranos australes de 2007 y 2013; en estos anos el EOA (500 nm) vario entre 0,0336 y 0,0743, lo que es típico por las condiciones de turbidez atmosferica en un sitio polar dominado por las condiciones marítimas. Durante esta epoca del año los valores del EOA también son inferiores a los registrados en las ciudades (entre 0,25 y 1, 7), y mucho menores que los registros durante la quema de biomasa, temporada donde los valores de EOA pueden llegar hasta 0,4. Los valores reportados de EOA (500 nm) estan dentro del rango de las estaciones Antarticas costeras de la estación de Neumayer y Aboa, que son 0,06 y 0,0551 respectivamente.
We describe the results of the study of aerosol optical depth (AOD) aerosols, obtained from the measurement and monitoring campaign carried out during the XVII and XXI Antarctic Peruvian Expedition in the months of January 2007 and February 2013 respectively, in the Antarctic Research Machu Picchu Station (ARMPS) at 62°05'30" S, 58°28'16" W and 6 masl. We used a SP02-L sun photometer, which is within the instrumental framework of the International Polar Year. This instrument has 4 channels: 412 nm, 500 nm, 675 nm and 862 nm, thus allowing direct radiation spectra measurements. The results calculated of AOD in polar latitudes show the lowest average in the world, 0.0551 ± 0.0139 (at 500 nm) during the austral summers of 2007 and 2013; also during these years the AOD (500 nm) ranged from 0.0336 to 0.0743, which is typical in conditions of atmospheric turbidity on a polar site dominated by sea conditions. During this time of year, these AOD reported values are lower than in cities (from 0.25 to 1.7) and much lower than the measurements during biomass burning, when values can reach 0.4. The reported AOD values (500 nm) are within the range of coastal Antarctic stations Neumayer and Aboa which are 0.06 and 0.0551 respectively.
We describe the results of the study of aerosol optical depth (AOD) aerosols, obtained from the measurement and monitoring campaign carried out during the XVII and XXI Antarctic Peruvian Expedition in the months of January 2007 and February 2013 respectively, in the Antarctic Research Machu Picchu Station (ARMPS) at 62°05'30" S, 58°28'16" W and 6 masl. We used a SP02-L sun photometer, which is within the instrumental framework of the International Polar Year. This instrument has 4 channels: 412 nm, 500 nm, 675 nm and 862 nm, thus allowing direct radiation spectra measurements. The results calculated of AOD in polar latitudes show the lowest average in the world, 0.0551 ± 0.0139 (at 500 nm) during the austral summers of 2007 and 2013; also during these years the AOD (500 nm) ranged from 0.0336 to 0.0743, which is typical in conditions of atmospheric turbidity on a polar site dominated by sea conditions. During this time of year, these AOD reported values are lower than in cities (from 0.25 to 1.7) and much lower than the measurements during biomass burning, when values can reach 0.4. The reported AOD values (500 nm) are within the range of coastal Antarctic stations Neumayer and Aboa which are 0.06 and 0.0551 respectively.
Description
Vol. 27, No. 27