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Abstract We present here the first long-term (2001–2017) record of aerosol optical depth (AOD; interchangeably, AOT) and contributions of aerosol chemical components to light extinction over Kolkata, the second-most polluted… Click to show full abstract
Abstract We present here the first long-term (2001–2017) record of aerosol optical depth (AOD; interchangeably, AOT) and contributions of aerosol chemical components to light extinction over Kolkata, the second-most polluted metropolis in India. For this purpose, we use daily gridded MODIS AOD measurements coupled with modeled AOT for 5 major aerosol constituents – sulfate, sea-salt, dust, organic carbon (OC) and black carbon (BC), from the MERRA-2 reanalysis system. We find that AOD over Kolkata has increased significantly (32% overall, 0.010 y−1; Mann-Kendall test with Thiel-Sen slope estimation; p
Journal Title: Atmospheric Environment
Year Published: 2019
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