Characterisation of dust aerosols and their absorbing efficiency over South Asia using infrared observations from INSAT-3D Imager DOI

Chaluparambil B. Lima,

S. S. Prijith,

S. Suresh Babu

et al.

International Journal of Remote Sensing, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 24

Published: Dec. 10, 2024

Radiative impacts of dust aerosols exhibit large regional and temporal heterogeneity, despite the global net cooling effect. Hence, accurate assessment aerosol on weather climate calls for their Characterisation its proper incorporation in models. In this study, distribution effects absorbing efficiency system over South Asia are examined using Infrared Difference Dust Index (IDDI) derived from Imager onboard ISRO's INSAT-3D satellite. IDDI estimated agrees well (r ranges 0.4 to 0.7) with optical depth (DAOD) Moderate Resolution Imaging Spectroradiometer (MODIS) Second Modern-Era Retrospective analysis Research Applications (MERRA-2). This shows potential parameter diurnal seasonal evolutions. Using INSAT-3D, study further examines changes characteristics Indian landmass surrounding oceanic regions during severe storm episodes. Spatial prevailing circulation pattern show long range transport particles source faraway locations events. is confirmed by presence elevated layers high particulate depolarization ratio, observed Cloud-Aerosol Lidar Orthogonal Polarization (CALIOP). An increase observed, due these transported particles, Asian region. (DAE) about 20–25K enhancement radiation absorption wide spread a vast domain would significantly alter dynamics systems Asia, especially pre-monsoon monsoon seasons.

Language: Английский

Estimation of regional PM2.5 concentration in China based on fine-mode aerosol optical thickness (AODf) and study of influencing factors DOI

Cheng Wan,

Haifeng Xu,

Wenhui Luo

et al.

Atmospheric Environment, Journal Year: 2025, Volume and Issue: 344, P. 121026 - 121026

Published: Jan. 2, 2025

Language: Английский

Citations

0
Investigation of full polarization characteristics of aerosols and cloud particles with Stokes lidar DOI

Xirui Ma,

Zhao Hu, Yun Zhang

et al.

Optics and Lasers in Engineering, Journal Year: 2025, Volume and Issue: 192, P. 109034 - 109034

Published: May 3, 2025

Language: Английский

Citations

0
Validation and Comparison of Long-Term Accuracy and Stability of Global Reanalysis and Satellite Retrieval AOD DOI Creative Commons
Xin Su,

Huang Ge,

Lin Wang

et al.

Remote Sensing, Journal Year: 2024, Volume and Issue: 16(17), P. 3304 - 3304

Published: Sept. 5, 2024

Reanalysis and satellite retrieval are two primary approaches for obtaining large-scale long-term Aerosol Optical Depth (AOD) datasets. This study evaluates compares the accuracy, stability, error characteristics of MERRA-2, MODIS combined Dark Target Deep Blue (DT&DB), VIIRS DB AOD products globally regionally. The results indicate that MERRA-2 exhibits highest accuracy with an expected (EE, ±0.05 ± 20%) 83.24% mean absolute (MAE) 0.056, maintaining a stability 0.010 per decade. However, since ceased assimilating observations other than in 2014, its decreased by approximately 5.6% EE metric after 2014. (DB) product, 79.43% 0.016 decade, is slightly less accurate stable compared to AOD. DT&DB demonstrates 76.75% 0.011 Regionally, performs acceptably most areas, especially low-aerosol-loading regions, > 86% ~0.02 excels high-aerosol-loading such as Indian subcontinent, 69.14% 0.049 performance falls between across regions. Overall, each product meets metrics globally, but users need select appropriate analysis based on validation different

Language: Английский

Citations

2
Retrieval of the Aerosol Scale Height over the Ocean Based on Near-infrared Multiangle Polarization Measurements DOI
Tianfeng Pan, Xianqiang He, Yan Bai

et al.

IEEE Transactions on Geoscience and Remote Sensing, Journal Year: 2024, Volume and Issue: 62, P. 1 - 16

Published: Jan. 1, 2024

Language: Английский

Citations

0
Characterisation of dust aerosols and their absorbing efficiency over South Asia using infrared observations from INSAT-3D Imager DOI

Chaluparambil B. Lima,

S. S. Prijith,

S. Suresh Babu

et al.

International Journal of Remote Sensing, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 24

Published: Dec. 10, 2024

Radiative impacts of dust aerosols exhibit large regional and temporal heterogeneity, despite the global net cooling effect. Hence, accurate assessment aerosol on weather climate calls for their Characterisation its proper incorporation in models. In this study, distribution effects absorbing efficiency system over South Asia are examined using Infrared Difference Dust Index (IDDI) derived from Imager onboard ISRO's INSAT-3D satellite. IDDI estimated agrees well (r ranges 0.4 to 0.7) with optical depth (DAOD) Moderate Resolution Imaging Spectroradiometer (MODIS) Second Modern-Era Retrospective analysis Research Applications (MERRA-2). This shows potential parameter diurnal seasonal evolutions. Using INSAT-3D, study further examines changes characteristics Indian landmass surrounding oceanic regions during severe storm episodes. Spatial prevailing circulation pattern show long range transport particles source faraway locations events. is confirmed by presence elevated layers high particulate depolarization ratio, observed Cloud-Aerosol Lidar Orthogonal Polarization (CALIOP). An increase observed, due these transported particles, Asian region. (DAE) about 20–25K enhancement radiation absorption wide spread a vast domain would significantly alter dynamics systems Asia, especially pre-monsoon monsoon seasons.

Language: Английский

Citations

0