T. Andrew Black
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View article: Physically-constrained evapotranspiration models with machine learning parameterization outperform pure machine learning: Critical role of domain knowledge
Physically-constrained evapotranspiration models with machine learning parameterization outperform pure machine learning: Critical role of domain knowledge Open
Physics-informed machine learning techniques have emerged to tackle challenges inherent in pure machine learning (ML) approaches. One such technique, the hybrid approach, has been introduced to estimate terrestrial evapotranspiration (ET),…
View article: Assessing boundary layer heights with ERA5, WRF, and scanning lidar measurements
Assessing boundary layer heights with ERA5, WRF, and scanning lidar measurements Open
Understanding the atmospheric phenomena of the offshore wind sites helps inform the potential risks from wake propagation, an issue becoming more prominent as wind farms grow larger and more densely concentrated. The atmospheric boundary l…
View article: Long-term meteorological and carbon, water and energy flux data from the Boreal Ecosystem Research and Monitoring Sites, Saskatchewan, Canada
Long-term meteorological and carbon, water and energy flux data from the Boreal Ecosystem Research and Monitoring Sites, Saskatchewan, Canada Open
The Boreal Ecosystem Research and Monitoring Sites (BERMS) are a network of flux tower research sites located near the southern boundary of the Boreal Plains Ecozone in Saskatchewan, Canada. This network includes four principal sites that …
View article: <scp>can</scp>N<sub>2</sub>O<scp>net</scp>—a Canadian nitrous oxide collaboration network to meet greenhouse gas emission reduction targets
<span>can</span>N<sub>2</sub>O<span>net</span>—a Canadian nitrous oxide collaboration network to meet greenhouse gas emission reduction targets Open
The application of nitrogen (N) fertilizer to agricultural soils results in the emission of nitrous oxide (N 2 O), accounting for ∼40% of Canada’s and 10% of global agricultural greenhouse gas emissions. Reducing these emissions through N …
View article: Addressing Challenges in Simulating Inter–Annual Variability of Gross Primary Production
Addressing Challenges in Simulating Inter–Annual Variability of Gross Primary Production Open
A long‐standing challenge in studying the global carbon cycle has been understanding the factors controlling inter–annual variation (IAV) of carbon fluxes, and improving their representations in existing biogeochemical models. Here, we com…
View article: Refining Control, Charging, and Battery Chemistry for CO<sub>2</sub>e Savings in Heavy-Duty Off-Road Plug-In Series Hybrid
Refining Control, Charging, and Battery Chemistry for CO<sub>2</sub>e Savings in Heavy-Duty Off-Road Plug-In Series Hybrid Open
With current and future regulations continuing to drive reductions in carbon dioxide equivalent (CO2e) emissions in the on-road industry, the off-road industry is also likely to be regulated for fuel and CO2e savings. This work focuses on …
View article: Seasonal warming responses of the carbon dioxide sink from northern forests are sensitive to stand age
Seasonal warming responses of the carbon dioxide sink from northern forests are sensitive to stand age Open
Northern forests (forests north of 30°N) are major terrestrial carbon dioxide (CO2) sinks, while rapid warming can disturb their CO2 sink function. Here we use multi-year net CO2 exchange observations from 65 northern forest sites to show …
View article: Seasonal warming responses of the ecosystem CO2 sink of northern forests are sensitive to stand age
Seasonal warming responses of the ecosystem CO2 sink of northern forests are sensitive to stand age Open
Northern forests (forests north of 30°N) are major terrestrial CO2 sinks, while rapid warming in these regions can disturb their CO2 sink function. The age-dependent nature of the CO2 sink in forests has been widely reported, but the impac…
View article: Disruption and recovery of carbon dioxide and water vapour exchange over British Columbia forests after natural and human disturbance
Disruption and recovery of carbon dioxide and water vapour exchange over British Columbia forests after natural and human disturbance Open
Globally, forests are facing a wide range of disturbances that significantly impact carbon dioxide (CO2) and water vapour exchange. In British Columbia (BC), Canada, coastal Douglas-fir and interior lodgepole pine are two of the most commo…
View article: Behavior and mechanisms of Doppler wind lidar error in complex terrain: stable flow case study at Perdigão
Behavior and mechanisms of Doppler wind lidar error in complex terrain: stable flow case study at Perdigão Open
A numerical experiment is carried out investigating the magnitude of biases in ground-based lidar measurements in complex flow conditions. Biases assessed include those arising from flow curvature and from the interaction of turbulence wit…
View article: Phenology of Photosynthesis in Winter‐Dormant Temperate and Boreal Forests: Long‐Term Observations From Flux Towers and Quantitative Evaluation of Phenology Models
Phenology of Photosynthesis in Winter‐Dormant Temperate and Boreal Forests: Long‐Term Observations From Flux Towers and Quantitative Evaluation of Phenology Models Open
We examined the seasonality of photosynthesis in 46 evergreen needleleaf (evergreen needleleaf forests (ENF)) and deciduous broadleaf (deciduous broadleaf forests (DBF)) forests across North America and Eurasia. We quantified the onset and…
View article: Quantitative analysis of diurnal CO <sub>2</sub> flux variations above an alkaline playa
Quantitative analysis of diurnal CO <sub>2</sub> flux variations above an alkaline playa Open
The alkaline playas at Atlin, BC, provide a unique opportunity for studying the carbonate–bicarbonate system and carbonate mineral stability at the Earth's surface. In this study, dynamic closed chambers (DCCs) and pore‐gas sampling were u…
View article: A meta‐analysis highlights globally widespread potassium limitation in terrestrial ecosystems
A meta‐analysis highlights globally widespread potassium limitation in terrestrial ecosystems Open
Summary Potassium (K + ) is the most abundant inorganic cation in plant cells, playing a critical role in various plant functions. However, the impacts of K on natural terrestrial ecosystems have been less studied compared with nitrogen (N…
View article: Interannual variability of carbon dioxide (CO2) and methane (CH4) fluxes in a rewetted temperate bog
Interannual variability of carbon dioxide (CO2) and methane (CH4) fluxes in a rewetted temperate bog Open
Peatland rewetting, a management effort to restore water levels in previously drained peatlands, is important for re-establishing the role of these peatlands as carbon (C) sinks. Since rewetted peatlands have a highly variable response to …
View article: A boreal forest model benchmarking dataset for North America: a case study with the Canadian Land Surface Scheme Including Biogeochemical Cycles (CLASSIC)
A boreal forest model benchmarking dataset for North America: a case study with the Canadian Land Surface Scheme Including Biogeochemical Cycles (CLASSIC) Open
Climate change is rapidly altering composition, structure, and functioning of the boreal biome, across North America often broadly categorized into ecoregions. The resulting complex changes in different ecoregions present a challenge for e…
View article: Assessing the Complementary Role of Surface Flux Equilibrium (SFE) Theory and Maximum Entropy Production (MEP) Principle in the Estimation of Actual Evapotranspiration
Assessing the Complementary Role of Surface Flux Equilibrium (SFE) Theory and Maximum Entropy Production (MEP) Principle in the Estimation of Actual Evapotranspiration Open
Although evapotranspiration (ET) from the land is a key variable in Earth system models, the accurate estimation of ET based on physical principles remains challenging. Parameters used in current ET models are largely empirically based, wh…
View article: Estimating Net Carbon and Greenhouse Gas Balances of Potato and Pea Crops on a Conventional Farm in Western Canada
Estimating Net Carbon and Greenhouse Gas Balances of Potato and Pea Crops on a Conventional Farm in Western Canada Open
Quantifying the emissions of the three main biogenic greenhouse gases (GHGs), carbon dioxide (CO 2 ), nitrous oxide (N 2 O) and methane (CH 4 ), from agroecosystems is crucial. In this study continuous measurements of N 2 O, and CH 4 emiss…
View article: AmeriFlux FLUXNET-1F CA-Ca2 British Columbia - Clearcut Douglas-fir stand (harvested winter 1999/2000)
AmeriFlux FLUXNET-1F CA-Ca2 British Columbia - Clearcut Douglas-fir stand (harvested winter 1999/2000) Open
This is the AmeriFlux Management Project (AMP) created FLUXNET-1F version of the carbon flux data for the site CA-Ca2 British Columbia - Clearcut Douglas-fir stand (harvested winter 1999/2000). This is the FLUXNET version of the carbon flu…
View article: AmeriFlux FLUXNET-1F CA-Obs Saskatchewan - Western Boreal, Mature Black Spruce
AmeriFlux FLUXNET-1F CA-Obs Saskatchewan - Western Boreal, Mature Black Spruce Open
This is the AmeriFlux Management Project (AMP) created FLUXNET-1F version of the carbon flux data for the site CA-Obs Saskatchewan - Western Boreal, Mature Black Spruce. This is the FLUXNET version of the carbon flux data for the site CA-O…
View article: AmeriFlux FLUXNET-1F CA-Ca1 British Columbia - 1949 Douglas-fir stand
AmeriFlux FLUXNET-1F CA-Ca1 British Columbia - 1949 Douglas-fir stand Open
This is the AmeriFlux Management Project (AMP) created FLUXNET-1F version of the carbon flux data for the site CA-Ca1 British Columbia - 1949 Douglas-fir stand. This is the FLUXNET version of the carbon flux data for the site CA-Ca1 Britis…
View article: data for "meta-analysis highlights globally widespread potassium limitation in terrestrial ecosystems"
data for "meta-analysis highlights globally widespread potassium limitation in terrestrial ecosystems" Open
A meta-analysis of 95 published research articles and compiled a database comprised of 144 K fertilization experiments.
View article: Estimating net carbon balances and greenhouse gas radiative balances of potato and pea crops on a conventional farm in western Canada (Flux and meteorological data)
Estimating net carbon balances and greenhouse gas radiative balances of potato and pea crops on a conventional farm in western Canada (Flux and meteorological data) Open
Data accompanying the paper titled as "Estimating net carbon and greenhouse gas balances of potato and pea crops on a conventional farm in western Canada". Data includes measurements from eddy covariance, chamber, and meteorological sensor…