نتایج جستجو برای: عمق نوری هواویز aod

تعداد نتایج: 26394  

2014
Jianjun Liu Zhanqing Li

Large-scale measurements of cloud condensation nuclei (CCN) are difficult to obtain on a routine basis, whereas aerosol optical quantities are more readily available. This study investigates the relationship between CCN and aerosol optical quantities for some distinct aerosol types using extensive observational data collected at multiple Atmospheric Radiation Measurement (ARM) Climate Research ...

Journal: :Remote Sensing 2017
Yi Wang Jun Wang Robert C. Levy Xiaoguang Xu Jeffrey S. Reid

We present a new approach to retrieve Aerosol Optical Depth (AOD) using the Moderate Resolution Imaging Spectroradiometer (MODIS) over the turbid coastal water. This approach supplements the operational Dark Target (DT) aerosol retrieval algorithm that currently does not conduct AOD retrieval in shallow waters that have visible sediments or sea-floor (i.e., Class 2 waters). Over the global coas...

Journal: :Circulation 2002
Takatsugu Shimono Noriyuki Kato Fuyuhiko Yasuda Tomoaki Suzuki Uhito Yuasa Koji Onoda Tadanori Hirano Kan Takeda Iaso Yada

BACKGROUND Transluminal stent-graft placement (TSGP) for aortic dissection is a relatively new procedure. We performed TSGPs to seal the primary entry site to treat and prevent complications of aortic dissection. The early to mid-term outcomes were analyzed. METHODS AND RESULTS Thirty-seven patients with a primary intimal tear in descending aorta underwent TSPG. TSGP was performed in 16 acute...

2012
Matthew S. Johnson Nicholas Meskhidze Velayudhan Praju Kiliyanpilakkil

[1] Dust aerosol optical depth (AOD) and vertical distribution of aerosol extinction predicted by a global chemical transport model (GEOS-Chem) are compared to spaceborne data from the Moderate-resolution Imaging Spectroradiometer (MODIS), MultiAngle Imaging SpectroRadiometer (MISR), and Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) for March 2009 to February 2010....

2006
Christoph Popp Nando Foppa Adrian Hauser Stefan Wunderle

Geostationary sensors bear the potential to derive and analyze daily and seasonal trends of aerosol optical depth (AOD) from spatially homogeneous data. However, to date most AOD retrieval algorithms from geostationary sensors are limited to sea surfaces. In this study, a multi-temporal technique to retrieve AOD over land from the Spinning Enhanced Visible and Infra-Red Imager (SEVIRI) on-board...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان - دانشکده منابع طبیعی 1393

یکی از مهم ترین معضلات جهانی محیط زیست به ویژه در شهرهای بزرگ، آلودگی هوا می باشد که به عنوان یک تهدید دائمی و جدی برای سلامت جامعه و محیط تلقی می شود. روش های مختلف آماری برای بررسی ارتباط بین آلودگی هوا و شرایط آب و هوایی مورد استفاده قرار می گیرد. در این مطالعه، به منظور بررسی تأثیر فراسنج های اقلیمی و غلظت آلاینده ها ی هوا بر ازون سطحی و تابش فرابنفش خورشیدی در شهر اصفهان از روش رگرسیون خطی...

Journal: :Substance abuse 2003
Sean Esteban McCabe Carol Boyd Tonda L Hughes Hannah d'Arcy

This study examined the association between sexual identity and use of alcohol and other drugs (AOD) among college undergraduate students. A survey regarding AOD use was administered to a random sample of 3607 undergraduate students. The sample included 65 self-identified lesbian or bisexual (LB) women and 54 self-identified gay or bisexual (GB) men. Multivariate logistic regression indicated t...

Journal: :CoRR 2017
Boyi Li Xiulian Peng Zhangyang Wang Jizheng Xu Dan Feng

This paper proposes an image dehazing model built with a convolutional neural network (CNN), called All-in-One Dehazing Network (AOD-Net). It is designed based on a reformulated atmospheric scattering model. Instead of estimating the transmission matrix and the atmospheric light separately as most previous models did, AOD-Net directly generates the clean image through a light-weight CNN. Such a...

2015
Rupender Singh Sanjay Kumar Soni

We provide an analytical approach for the evaluation of important second order statistical parameters, as level crossing rate (LCR) and average outage duration (AOD) of MRC combiner in Log-Normal shadowed channels. New expressions have been derived for LCR and AOD in closed form. The results are valid for an arbitrary number of independent identically distributed diversity branches in the prese...

Journal: :Health 2013
Minho Kim Xingyou Zhang James B Holt Yang Liu

Recent studies have explored the relationship between aerosol optical depth (AOD) measurements by satellite sensors and concentrations of particulate matter with aerodynamic diameters less than 2.5 μm (PM2.5). However, relatively little is known about spatial and temporal patterns in this relationship across the contiguous United States. In this study, we investigated the relationship between U...

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