UNIDEF   23986
UNIDAD DE INVESTIGACION Y DESARROLLO ESTRATEGICO PARA LA DEFENSA
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Development of a high spectral resolution lidar for continuous observation of aerosols in South America
Autor/es:
JIN Y, SUGIMOTO N, NISHIZAWA T, RISTORI P, PAPANDREA S, OTERO L, ; QUEL E; MIZUNO A
Lugar:
New Delhi
Reunión:
Conferencia; Lidar Remote Sensing for Environmental Monitoring XV; 2016
Resumen:
Continuous monitoring of aerosol profiles using lidar is helpful for a quasi-real-time indication of aerosol concentration and is applied for aerosol transport studies in combination with chemical transport models. For instance volcanic ash concentration and its height distribution are the essential information for plane flights. Depolarization ratio and multi-wavelength measurements are useful for aerosol typing such as volcanic ash, smoke, dust, sea-salt, and air pollution aerosols. High spectral resolution lidar (HSRL) and Raman scattering lidar can contribute to such aerosol typing significantly since extinction coefficients can be measured independently from backscattering coefficients. In particular HSRL can measure aerosol extinction in daytime and nighttime with a high sensitivity. However, there are few works on continuous observation with HSRL because of its complicated controls. We developed a HSRL with a high spectral resolution receiver using an iodine filter for continuous observation of aerosols at 532nm. The laser wavelength is well controlled by a feedback system to tune the laser wavelength to the center of iodine absorption line. An HSRL with above control system is now developing in Argentina in the framework of South American Environmental Risk Network (SAVERNET). In May 2015, a feedback control system was installed to stabilize laser wavelength for a prolonged time. This study reports the measurement technique and developing status of HSRL in Argentina.