David Griffith
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View article: Comparisons of the v11.1 Orbiting Carbon Observatory‐2 (OCO‐2) X<sub>CO2</sub> Measurements With GGG2020 TCCON
Comparisons of the v11.1 Orbiting Carbon Observatory‐2 (OCO‐2) X<sub>CO2</sub> Measurements With GGG2020 TCCON Open
The Orbiting Carbon Observatory 2 (OCO‐2) is NASA's first Earth observation satellite mission dedicated to studying the sources and sinks of carbon dioxide (CO 2 ) on a global scale. The observations of reflected sunlight are inverted in a…
View article: Implementation and application of an improved phase spectrum determination scheme for Fourier transform spectrometry
Implementation and application of an improved phase spectrum determination scheme for Fourier transform spectrometry Open
Correct determination of the phase spectrum is a highly relevant task in Fourier transform spectrometry for concluding which spectral distribution most likely gave rise to the measured interferogram. We present implementation of an improve…
View article: Local and regional enhancements of CH <sub>4</sub> , CO, and CO <sub>2</sub> inferred from TCCON column measurements
Local and regional enhancements of CH <sub>4</sub> , CO, and CO <sub>2</sub> inferred from TCCON column measurements Open
In this study, we demonstrate the utility of available correlative measurements of carbon species to identify regional and local air mass characteristics as well as their associated source types. In particular, we combine different regress…
View article: Implementation and application of an improved phase spectrum determination scheme for Fourier Transform Spectrometry
Implementation and application of an improved phase spectrum determination scheme for Fourier Transform Spectrometry Open
Correct determination of the phase spectrum is a highly relevant task in Fourier Transform Spectrometry for concluding which spectral distribution connects with the measured interferogram. We present implementation of an improved scheme fo…
View article: Fiducial Reference Measurement for Greenhouse Gases (FRM4GHG)
Fiducial Reference Measurement for Greenhouse Gases (FRM4GHG) Open
The Total Carbon Column Observing Network (TCCON) and the Infrared Working Group of the Network for the Detection of Atmospheric Composition Change (NDACC-IRWG) are two ground-based networks that provide the retrieved concentrations of up …
View article: AdapShare: An RL-Based Dynamic Spectrum Sharing Solution for O-RAN
AdapShare: An RL-Based Dynamic Spectrum Sharing Solution for O-RAN Open
The Open Radio Access Network (O-RAN) initiative, characterized by open interfaces and AI/ML-capable RAN Intelligent Controller (RIC), facilitates effective spectrum sharing among RANs. In this context, we introduce AdapShare, an ORAN-comp…
View article: ProSAS: An O-RAN Approach to Spectrum Sharing between NR and LTE
ProSAS: An O-RAN Approach to Spectrum Sharing between NR and LTE Open
The Open Radio Access Network (O-RAN), an industry-driven initiative, utilizes intelligent Radio Access Network (RAN) controllers and open interfaces to facilitate efficient spectrum sharing between LTE and NR RANs. In this paper, we intro…
View article: A combined dataset of path-averaged and in-situ measurements of greenhouse gases to inform on the sensitivities to localized source patterns and transport effects in the urban atmosphere.
A combined dataset of path-averaged and in-situ measurements of greenhouse gases to inform on the sensitivities to localized source patterns and transport effects in the urban atmosphere. Open
Urban areas are a major and growing contributor to anthropogenic greenhouse gas (GHG) emissions and are thus an important target for emission reduction efforts. However, measurement-based information for planning, implementing, and monitor…
View article: An open-path observatory for greenhouse gases based on near-infrared Fourier transform spectroscopy
An open-path observatory for greenhouse gases based on near-infrared Fourier transform spectroscopy Open
Monitoring the atmospheric concentrations of the greenhouse gases (GHG) carbon dioxide (CO2) and methane (CH4) is a key ingredient for fostering our understanding of the mechanisms behind the sources and sinks of these gases and for verify…
View article: Comment on essd-2023-331
Comment on essd-2023-331 Open
Abstract. The Total Carbon Column Observing Network (TCCON) measures column-average mole fractions of several greenhouse gases (GHGs) beginning in 2004 from over 30 current or past measurement sites around the world, using solar absorption…
View article: Comment on amt-2023-185
Comment on amt-2023-185 Open
Abstract. Monitoring the atmospheric concentrations of the greenhouse gases (GHG) carbon dioxide CO2 and methane CH4 is a key ingredient for fostering our understanding of the mechanisms behind the sources and sinks of these gases and for …
View article: An open-path observatory for greenhouse gases based on near-infrared Fourier transform spectroscopy
An open-path observatory for greenhouse gases based on near-infrared Fourier transform spectroscopy Open
Monitoring the atmospheric concentrations of the greenhouse gases (GHG) carbon dioxide CO2 and methane CH4 is a key ingredient for fostering our understanding of the mechanisms behind the sources and sinks of these gases and for verifying …
View article: Measurement of Long-Term CH4 Emissions and Emission Factors from Beef Feedlots in Australia
Measurement of Long-Term CH4 Emissions and Emission Factors from Beef Feedlots in Australia Open
One of the major challenges for the Australian feedlot and meat sectors is to have accurate and robust long-term greenhouse gas (GHG) emissions data. Long-term measurements of methane (CH4) emissions (2015–2017) were made at two Australian…
View article: The Total Carbon Column Observing Network's GGG2020 Data Version
The Total Carbon Column Observing Network's GGG2020 Data Version Open
The Total Carbon Column Observing Network (TCCON) measures column-average mole fractions of several greenhouse gases (GHGs) beginning in 2004 from over 30 current or past measurement sites around the world, using solar absorption spectrosc…
View article: Soil respiration–driven CO <sub>2</sub> pulses dominate Australia’s flux variability
Soil respiration–driven CO <sub>2</sub> pulses dominate Australia’s flux variability Open
The Australian continent contributes substantially to the year-to-year variability of the global terrestrial carbon dioxide (CO 2 ) sink. However, the scarcity of in situ observations in remote areas prevents the deciphering of processes t…
View article: Update on the GOSAT TANSO–FTS SWIR Level 2 retrieval algorithm
Update on the GOSAT TANSO–FTS SWIR Level 2 retrieval algorithm Open
The National Institute for Environmental Studies has provided the column-averaged dry-air mole fraction of carbon dioxide and methane (XCO2 and XCH4) products (L2 products) obtained from the Greenhouse gases Observing SATellite (GOSAT) for…
View article: National CO <sub>2</sub> budgets (2015–2020) inferred from atmospheric CO <sub>2</sub> observations in support of the global stocktake
National CO <sub>2</sub> budgets (2015–2020) inferred from atmospheric CO <sub>2</sub> observations in support of the global stocktake Open
Accurate accounting of emissions and removals of CO2 is critical for the planning and verification of emission reduction targets in support of the Paris Agreement. Here, we present a pilot dataset of country-specific net carbon exchange (N…
View article: Fire emission estimates for Australian extreme fire season 2019/2020 using FLEXPART
Fire emission estimates for Australian extreme fire season 2019/2020 using FLEXPART Open
In Australia, increasing temperatures and prolonged drought periods lead to an intensification of wildfires. In particular, severe fires are expected to occur more frequently in Southeast Australia’s eucalyptus forests leading to str…
View article: Unique Tall Tower Greenhouse Gas Measurements in the Amazon Rainforest: observed patterns and daily cycles
Unique Tall Tower Greenhouse Gas Measurements in the Amazon Rainforest: observed patterns and daily cycles Open
The ATTO (Amazon Tall Tower Observatory) tower is a 325m tall tower located in the middle of the pristine Amazon rainforest. Since 2022, continuous greenhouse gas concentrations at different heights (4m, 42m, 81m, 150m, 273m, 321m) are mon…
View article: Corrigendum: Building trust, building futures: Knowledge as co-production as relationship, design, and process in transdisciplinary science
Corrigendum: Building trust, building futures: Knowledge as co-production as relationship, design, and process in transdisciplinary science Open
Corrigendum: Building trust, building futures: Knowledge as co-production as relationship, design, and process in transdisciplinary scienceIn the published article, there was an omission in the Funding statement. " This research was funded…
View article: Quality Evaluation of the Column-Averaged Dry Air Mole Fractions of Carbon Dioxide and Methane Observed by GOSAT and GOSAT-2
Quality Evaluation of the Column-Averaged Dry Air Mole Fractions of Carbon Dioxide and Methane Observed by GOSAT and GOSAT-2 Open
Column-averaged dry air mole fractions of carbon dioxide and methane (XCO2 and XCH4) retrieved from SWIR (Short-Wavelength InfraRed) observations by GOSAT (Greenhouse Gases Observing SATellite) since 2009 and its successor GOSAT-2 since 20…
View article: Comment on egusphere-2022-1331
Comment on egusphere-2022-1331 Open
Abstract. EM27/SUNs are portable solar-viewing Fourier Transform Spectrometers (FTSs) that are being widely used to constrain measurements of greenhouse gas emissions and validate satellite trace gas measurements. On a six-week-long campai…
View article: 217. A Phase 1 Study of the Safety, Tolerability, and Pharmacokinetics of Multiple Doses of the Lipopeptide QPX9003 in Healthy Adult Subjects
217. A Phase 1 Study of the Safety, Tolerability, and Pharmacokinetics of Multiple Doses of the Lipopeptide QPX9003 in Healthy Adult Subjects Open
Background QPX9003 is a fully synthetic lipopeptide with potent activity against MDR Pseudomonas and Acinetobacter spp. This report describes the safety and pharmacokinetics of QPX9003 following single and multiple doses. Methods Twelve he…
View article: 218. A Phase 1 Study of the Single-Dose Safety, Tolerability, and Pharmacokinetics of the Beta-lactamase inhibitor Xeruborbactam Administered as the Isobutyryloxymethyl Oral Prodrug to Healthy Adult Subjects
218. A Phase 1 Study of the Single-Dose Safety, Tolerability, and Pharmacokinetics of the Beta-lactamase inhibitor Xeruborbactam Administered as the Isobutyryloxymethyl Oral Prodrug to Healthy Adult Subjects Open
Background Xeruborbactam (XERU) is a member of a new class of cyclic boronic acid β-lactamase inhibitors with inhibitory activity against major members of Class A, B, C, and D beta-lactamases. This report describes the first safety and pha…
View article: 614. Pharmacodynamics (PD) of the Beta-Lactamase Inhibitor Xeruborbactam When Administered as the Oral Prodrug in Combination with Ceftibuten
614. Pharmacodynamics (PD) of the Beta-Lactamase Inhibitor Xeruborbactam When Administered as the Oral Prodrug in Combination with Ceftibuten Open
Background Xeruborbactam (XERU) is a member of a new class of cyclic boronic acid β-lactamase inhibitors with inhibitory activity against major members of Class A, B, C, and D beta-lactamases. XERU is highly orally bioavailable when admini…
View article: 616. Pharmacodynamics (PD) of the lipopeptide QPX9003 Against <i>Acinetobacter baumannii</i> and <i>Pseudomonas aeruginosa</i> in the Neutropenic Mouse Thigh Infection Model
616. Pharmacodynamics (PD) of the lipopeptide QPX9003 Against <i>Acinetobacter baumannii</i> and <i>Pseudomonas aeruginosa</i> in the Neutropenic Mouse Thigh Infection Model Open
Background Acinetobacter baumannii and Pseudomonas aeruginosa are important pathogens in hospital-acquired infections and can be resistant to multiple classes of antibiotics. QPX9003 is a novel synthetic lipopeptide that is highly active i…
View article: 216. A Phase 1 Study of the Safety, Tolerability, and Pharmacokinetics of Multiple Doses of the Beta-lactamase inhibitor Xeruborbactam Alone and in Combination Meropenem in Healthy Adult Subjects
216. A Phase 1 Study of the Safety, Tolerability, and Pharmacokinetics of Multiple Doses of the Beta-lactamase inhibitor Xeruborbactam Alone and in Combination Meropenem in Healthy Adult Subjects Open
Background Xeruborbactam (XERU) is a member of a new class of cyclic boronic acid β-lactamase inhibitors with inhibitory activity against major members of Class A, B, C, and D beta-lactamases. This report describes the safety and pharmacok…
View article: Comment on amt-2022-281
Comment on amt-2022-281 Open
The National Institute for Environmental Studies has provided the column-averaged dry-air mole fraction of carbon dioxide and methane (XCO2 and XCH4) products (L2 products) obtained from the Greenhouse gases Observing SATellite for more th…
View article: Update on the GOSAT TANSO–FTS SWIR Level 2 retrieval algorithm
Update on the GOSAT TANSO–FTS SWIR Level 2 retrieval algorithm Open
The National Institute for Environmental Studies has provided the column-averaged dry-air mole fraction of carbon dioxide and methane (XCO2 and XCH4) products (L2 products) obtained from the Greenhouse gases Observing SATellite for more th…
View article: Comment on essd-2022-213
Comment on essd-2022-213 Open
Abstract. Accurate accounting of emissions and removals of CO2 is critical for the planning and verification of emission reduction targets in support of the Paris Agreement. Here, we present a pilot dataset of country-specific net carbon e…