Micro Pulse Lidar measurements in coincidence with CALIPSO overpasses: Comparison of tropospheric aerosols over Kattankulathur (12.82oN, 80.04oE)

نویسندگان

چکیده

In this paper, we present validation of the cloud aerosol lidar with orthogonal polarization (CALIOP) level 1 and 2 tropospheric aerosols products in coincidence to Micro Pulse Lidar (MPL) observations under different sky conditions seasons during March 2016–December 2018 over a tropical coastal station Kattankulathur (12.83oN, 80.04oE). total, 33 simultaneous profiles clear-sky (18 cases) cloudy (15 cases; 7 mid-tropospheric (MT) clouds 8 cirrus are observed, out which 5, 13, 6, 9 cases winter, pre-monsoon, southwest (SW) monsoon northeast (NE) seasons, respectively. CALIOP underestimates MPL within boundary layer overestimates free troposphere both conditions. conditions, mean bias is found be −14 ± 29% 19%) below 3.0 km (over 3–10 km) while it −39 26% (33 24%) 3–8 underlying clouds. The comparison thick MT not reliable. However, better observed thin A strong seasonal variation vertical distribution loadings near surface maximum (minimum) loading ~0.01 0.005 km−1sr−1 (~0.004 0.002 km−1sr−1) winter (SW monsoon) season. altitude 0.3–5 14 28%, 15 44%, 25%, 24 34% SW monsoon, NE

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ژورنال

عنوان ژورنال: Atmospheric Pollution Research

سال: 2021

ISSN: ['1309-1042']

DOI: https://doi.org/10.1016/j.apr.2021.101082