A Novel Approach to Design a Scalable Air Quality Monitoring System

2012 ◽  
Vol 7 (3) ◽  
pp. 37-54
Author(s):  
Ivaylo Atanasov ◽  
Ventsislav Trifonov ◽  
Kamelia Nikolova ◽  
Evelina Pencheva
Keyword(s):  
Air Quality ◽  
Value Added ◽  
Quality Data ◽  
Telemetry System ◽  
Application Layer ◽  
A Value ◽  
Novel Approach ◽  
Co2 Monitoring ◽  
Carbon Dioxide Co2 ◽  
Internet Of Things Technology

The research presents a novel approach to carbon dioxide (CO2) emissions monitoring and access to local air quality data. The approach applies the advanced Internet of things technology to design a mobile telemetry system for CO2 data collection and processing in order to be presented as a value-added application to mobile users. Based on requirements analysis, functional architecture for mobile telemetry system is proposed. The design aspects of mobile telemetry application layer protocol are studied. An approach to formal verification of protocol behavior is suggested. An information model that captures the basic concepts related to CO2 monitoring is proposed. Examples of ubiquitous access to CO2 measurements are described.

GRACE/GRACE-FO science data archiving, distribution and user support at PO.DAAC

2020 ◽  
Author(s):  
Wen-Hao Li ◽  
Christopher Finch
Keyword(s):  
Value Added ◽  
Quality Data ◽  
Primary Data ◽  
Web Portal ◽  
Science Data ◽  
Equivalent Thickness ◽  
Data Accessibility ◽  
Data Archiving ◽  
A Value ◽  
Global Mean Sea Level

<p>The Physical Oceanography Distributed Active Archive Center (PO.DAAC) is the primary data archiving center for the GRACE/GRACE-FO mission products. During FY20, nearly 20 new and updated GRACE/GRACE-FO (Level-3,4) datasets have been archived and disseminated through PO.DAAC. In addition, a series of GRACE/GRACE-FO derived (Level-4) products supported by the MEaSUREs HOMAGE Project have been or soon will be released, including the published Global Mean Sea Level (GMSL) dataset. Easing the barriers of science data discoverability and usability, PO.DAAC has devoted major efforts to increase the data accessibility by integrating all its available tools/services, such the PO.DAAC Drive, OPeNDAP, THREDDS, LAS and Web Services. As a value-added service, GRACE/GRACE-FO liquid water equivalent thickness from the JPL-produced Mascon CRI monthly grids RL06 v2 can be dynamically visualized on a global map using the PO.DAAC State of the Oceans (SOTO) tool.  The availability of new and reprocessed datasets is promoted through a variety of media, including PO.DAAC’s Web Portal, email, social media (i.e., Twitter, Facebook), data animations on Youtube, and the PO.DAAC Forum. Recently, PO.DAAC has rolled out a refreshed web portal interface to provide more intuitive user experience and efficient browsing functionality to help simplify the data discovery and access experience. Some new features are also added to enrich dataset information, such as dataset citations, sample read software and data recipes on PO.DAAC github, and an updated Forum. The goal of the PO.DAAC is to provide the GRACE/GRACE-FO community access to high quality data with minimal user effort in discovering, accessing, understanding and utilizing the data.</p>

scholarly journals Long-Term Atmospheric Emissions for the Coal Oil Point Natural Marine Hydrocarbon Seep Field, Offshore California

2021 ◽  
Author(s):  
Ira Leifer ◽  
Christopher Melton ◽  
Donald R. Blake
Keyword(s):  
Air Quality ◽  
Grid Cell ◽  
Atmospheric Emissions ◽  
Model Inversion ◽  
Inversion Model ◽  
Industrial Sites ◽  
Novel Approach ◽  
Gaussian Plume ◽  
Carbon Dioxide Co2 ◽  
Plume Composition

Abstract. In this study, we present a novel approach for assessing nearshore seepage atmospheric emissions through modeling of air quality station data, specifically, a Gaussian plume inversion model. Three decades of air quality station meteorology and total hydrocarbon concentration, THC, data were analysed to study emissions from the Coal Oil Point marine seep field offshore California. THC in the seep field directions was significantly elevated and Gaussian with respect to wind direction, θ. An inversion model of the seep field anomaly, THC’(θ), derived atmospheric emissions. The model inversion is for the far field, which was satisfied by gridding the sonar seepage and treating each grid cell as a separate Gaussian plume. This assumption was validated by offshore in situ offshore data that showed major seep area plumes were Gaussian. Plume air sample THC was 85 % methane, CH4, and 20 % carbon dioxide, CO2, similar to seabed composition, demonstrating efficient vertical plume transport of dissolved seep gases. Air samples also measured atmospheric alkane plume composition. The inversion model used observed winds and derived the three-decade-average (1990–2021) field-wide atmospheric emissions of 83,500 ± 12,000 m3 THC day−1. Based on a 50:50 air to seawater partitioning, this implies seabed emissions of 167,000 m3 THC dy−1. Based on atmospheric plume composition, C1-C6 alkane emissions were 19, 1.3, 2.5, 2.2, 1.1, and 0.15 Gg yr−1, respectively. The approach can be extended to derive emissions from other dispersed sources such as landfills, industrial sites, or terrestrial seepage if source locations are constrained spatially.

Fixation of atmospheric CO2 as C1-feedstock by nickel(II) complexes

2021 ◽  
Author(s):  
Muthuramalingam Sethuraman ◽  
Marappan Velusamy ◽  
Ramasamy Mayilmurugan
Keyword(s):  
Carbon Dioxide ◽  
Atmospheric Carbon Dioxide ◽  
Value Added ◽  
Atmospheric Co2 ◽  
A Value ◽  
Atmospheric Carbon ◽  
Carbon Dioxide Co2 ◽  
Molecular Catalysts

The development of molecular catalysts for activation and conversion of atmospheric carbon dioxide (CO2) into a value-added product is a great challenge. A series of nickel(II) complexes [Ni(L)(CH3CN)3](BPh4)2, 1 -...

Novel CO2-Thermic Oxidation Process with Mg-Based Intermetallic Compounds and Its Application to Energy Storage Materials

2018 ◽  
Author(s):  
Younghwan Cha ◽  
Jung-In Lee ◽  
Panpan Dong ◽  
Xiahui Zhang ◽  
Min-Kyu Song
Keyword(s):  
Intermetallic Compounds ◽  
Oxidation Process ◽  
Value Added ◽  
Energy Storage Materials ◽  
Reaction Products ◽  
Materials Synthesis ◽  
Energy Materials ◽  
A Value ◽  
Carbon Coated ◽  
Novel Strategy

A novel strategy for the oxidation of Mg-based intermetallic compounds using CO<sub>2</sub> as an oxidizing agent was realized via simple thermal treatment, called ‘CO2-thermic Oxidation Process (CO-OP)’. Furthermore, as a value-added application, electrochemical properties of one of the reaction products (carbon-coated macroporous silicon) was evaluated. Considering the facile tunability of the chemical/physical properties of Mg-based intermetallics, we believe that this route can provide a simple and versatile platform for functional energy materials synthesis as well as CO<sub>2</sub> chemical utilization in an environment-friendly and sustainable way.

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