GRASP retrievals in synergy with both polarized Micro-Pulse Lidar and Sun/Sky photometer measurements to derive optical and microphysical properties of aged smoke plumes

2021 ◽  
Author(s):  
María Ángeles López Cayuela ◽  
Carmen Córdoba-Jabonero ◽  
Daniel Pérez-Ramírez ◽  
Milagros Herrera ◽  
Juan Luís Guerrero-Rascado
Keyword(s):  
Microphysical Properties ◽  
Smoke Plumes ◽  
Micro Pulse Lidar

Vertical assessment of the mineral dust optical and microphysical properties as retrieved from the synergy between polarized micro-pulse lidar and sun/sky photometer observations using GRASP code

2021 ◽  
pp. 105818
Author(s):  
María-Ángeles López-Cayuela ◽  
Marcos Herreras-Giralda ◽  
Carmen Córdoba-Jabonero ◽  
Anton Lopatin ◽  
Oleg Dubovik ◽  
...  
Keyword(s):  
Mineral Dust ◽  
Microphysical Properties ◽  
Micro Pulse Lidar

Microphysical Properties Observation of Cirrus Based on Micro-Pulse Lidar and Millimeter Wave Radar

2013 ◽  
Vol 50 (7) ◽  
pp. 070102
Author(s):  
王敏 Wang Min ◽  
卜令兵 Bu Lingbing ◽  
高爱臻 Gao Aizhen ◽  
袁静 Yuan Jing ◽  
黄兴友 Huang Xingyou ◽  
...  
Keyword(s):  
Millimeter Wave ◽  
Millimeter Wave Radar ◽  
Microphysical Properties ◽  
Wave Radar ◽  
Micro Pulse Lidar

scholarly journals Long-range-transported Canadian smoke plumes in the lower stratosphere over northern France

2019 ◽  
Vol 19 (2) ◽  
pp. 1173-1193 ◽  
Author(s):  
Qiaoyun Hu ◽  
Philippe Goloub ◽  
Igor Veselovskii ◽  
Juan-Antonio Bravo-Aranda ◽  
Ioana Elisabeta Popovici ◽  
...  
Keyword(s):  
Long Range ◽  
Optical Depth ◽  
Radiative Forcing ◽  
Dust Particles ◽  
Northern France ◽  
Microphysical Properties ◽  
Tropospheric Aerosol ◽  
Smoke Plumes ◽  
532 Nm ◽  
Depolarization Ratios

Abstract. Long-range-transported Canadian smoke layers in the stratosphere over northern France were detected by three lidar systems in August 2017. The peaked optical depth of the stratospheric smoke layer exceeds 0.20 at 532 nm, which is comparable with the simultaneous tropospheric aerosol optical depth. The measurements of satellite sensors revealed that the observed stratospheric smoke plumes were transported from Canadian wildfires after being lofted by strong pyro-cumulonimbus. Case studies at two observation sites, Lille (lat 50.612, long 3.142, 60 m a.s.l.) and Palaiseau (lat 48.712, long 2.215, 156 m a.s.l.), are presented in detail. Smoke particle depolarization ratios are measured at three wavelengths: over 0.20 at 355 nm, 0.18–0.19 at 532 nm, and 0.04–0.05 at 1064 nm. The high depolarization ratios and their spectral dependence are possibly caused by the irregular-shaped aged smoke particles and/or the mixing with dust particles. Similar results are found by several European lidar stations and an explanation that can fully resolve this question has not yet been found. Aerosol inversion based on lidar 2α+3β data derived a smoke effective radius of about 0.33 µm for both cases. The retrieved single-scattering albedo is in the range of 0.8 to 0.9, indicating that the smoke plumes are absorbing. The absorption can cause perturbations to the temperature vertical profile, as observed by ground-based radiosonde, and it is also related to the ascent of the smoke plumes when exposed in sunlight. A direct radiative forcing (DRF) calculation is performed using the obtained optical and microphysical properties. The calculation revealed that the smoke plumes in the stratosphere can significantly reduce the radiation arriving at the surface, and the heating rate of the plumes is about 3.5 K day−1. The study provides a valuable characterization for aged smoke in the stratosphere, but efforts are still needed in reducing and quantifying the errors in the retrieved microphysical properties as well as radiative forcing estimates.

A Computational Study of Fire and Smoke Plumes in a Large Indoor Stadium

2006 ◽  
Vol 15 (3) ◽  
pp. 183-200
Author(s):  
Tsai Kuo-Bao ◽  
Ho Ming-Chin ◽  
Chung Kee-Chiang
Keyword(s):  
Computational Study ◽  
Smoke Plumes

Estimation of the Altitude of Smoke Plumes from Satellite Images

2020 ◽  
Vol 33 (5) ◽  
pp. 539-544
Author(s):  
V. F. Raputa ◽  
A. A. Lezhenin
Keyword(s):  
Satellite Images ◽  
Smoke Plumes

scholarly journals The impact of the microphysical properties of aerosol on the atmospheric correction of hyperspectral data in coastal waters

2015 ◽  
Vol 8 (3) ◽  
pp. 1593-1604 ◽  
Author(s):  
C. Bassani ◽  
C. Manzo ◽  
F. Braga ◽  
M. Bresciani ◽  
C. Giardino ◽  
...  
Keyword(s):  
Accuracy Assessment ◽  
Atmospheric Correction ◽  
Solar Spectrum ◽  
Hyperspectral Data ◽  
High Spectral Resolution ◽  
Quality Analysis ◽  
Microphysical Properties ◽  
Quantitative Remote Sensing ◽  
The Impact ◽  
Aerosol Types

Abstract. Hyperspectral imaging provides quantitative remote sensing of ocean colour by the high spectral resolution of the water features. The HICO™ (Hyperspectral Imager for the Coastal Ocean) is suitable for coastal studies and monitoring. The accurate retrieval of hyperspectral water-leaving reflectance from HICO™ data is still a challenge. The aim of this work is to retrieve the water-leaving reflectance from HICO™ data with a physically based algorithm, using the local microphysical properties of the aerosol in order to overcome the limitations of the standard aerosol types commonly used in atmospheric correction processing. The water-leaving reflectance was obtained using the HICO@CRI (HICO ATmospherically Corrected Reflectance Imagery) atmospheric correction algorithm by adapting the vector version of the Second Simulation of a Satellite Signal in the Solar Spectrum (6SV) radiative transfer code. The HICO@CRI algorithm was applied on to six HICO™ images acquired in the northern Mediterranean basin, using the microphysical properties measured by the Acqua Alta Oceanographic Tower (AAOT) AERONET site. The HICO@CRI results obtained with AERONET products were validated with in situ measurements showing an accuracy expressed by r2 = 0.98. Additional runs of HICO@CRI on the six images were performed using maritime, continental and urban standard aerosol types to perform the accuracy assessment when standard aerosol types implemented in 6SV are used. The results highlight that the microphysical properties of the aerosol improve the accuracy of the atmospheric correction compared to standard aerosol types. The normalized root mean square (NRMSE) and the similar spectral value (SSV) of the water-leaving reflectance show reduced accuracy in atmospheric correction results when there is an increase in aerosol loading. This is mainly when the standard aerosol type used is characterized with different optical properties compared to the local aerosol. The results suggest that if a water quality analysis is needed the microphysical properties of the aerosol need to be taken into consideration in the atmospheric correction of hyperspectral data over coastal environments, because aerosols influence the accuracy of the retrieved water-leaving reflectance.

Remote sensing of radiative and microphysical properties of clouds during TC4: Results from MAS, MASTER, MODIS, and MISR

2010 ◽  
Vol 115 ◽  
Author(s):  
Michael D. King ◽  
Steven Platnick ◽  
Galina Wind ◽  
G. Thomas Arnold ◽  
Roseanne T. Dominguez
Keyword(s):  
Remote Sensing ◽  
Microphysical Properties

In situ optical and microphysical properties of tropospheric aerosols in the Canadian High Arctic from 2016 to 2019

2021 ◽  
Vol 250 ◽  
pp. 118254
Author(s):  
Andy Vicente-Luis ◽  
Samantha Tremblay ◽  
Joelle Dionne ◽  
Rachel Y.-W. Chang ◽  
Pierre F. Fogal ◽  
...  
Keyword(s):  
High Arctic ◽  
Canadian High Arctic ◽  
Microphysical Properties ◽  
Tropospheric Aerosols
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