Search Results - "CARVALHAIS, NUNO"
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Deep learning and process understanding for data-driven Earth system science
Published in Nature (London) (01-02-2019)“…Machine learning approaches are increasingly used to extract patterns and insights from the ever-increasing stream of geospatial data, but current approaches…”
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Aspects of Forest Biomass in the Earth System: Its Role and Major Unknowns
Published in Surveys in geophysics (01-07-2019)“…Forests are a major and diverse land cover occupying a third of the terrestrial vegetated surface; they store 50 to 65% of terrestrial organic carbon…”
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Severity of drought and heatwave crop losses tripled over the last five decades in Europe
Published in Environmental research letters (01-06-2021)“…Extreme weather disasters (EWDs) can jeopardize domestic food supply and disrupt commodity markets. However, historical impacts on European crop production…”
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4
Unexpectedly large impact of forest management and grazing on global vegetation biomass
Published in Nature (London) (04-01-2018)“…Analyses of potential and actual biomass stocks indicate that trade-offs exist between conserving carbon stocks on managed land and raising the contribution of…”
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Wildfire Danger Prediction and Understanding With Deep Learning
Published in Geophysical research letters (16-09-2022)“…Climate change exacerbates the occurence of extreme droughts and heatwaves, increasing the frequency and intensity of large wildfires across the globe…”
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Carbon stock and density of northern boreal and temperate forests
Published in Global ecology and biogeography (01-03-2014)“…AIM: To infer a forest carbon density map at 0.01° resolution from a radar remote sensing product for the estimation of carbon stocks in Northern Hemisphere…”
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Trend Change Detection in NDVI Time Series: Effects of Inter-Annual Variability and Methodology
Published in Remote sensing (Basel, Switzerland) (01-05-2013)“…Changing trends in ecosystem productivity can be quantified using satellite observations of Normalized Difference Vegetation Index (NDVI). However, the…”
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Implications of the steady-state assumption for the global vegetation carbon turnover
Published in Environmental research letters (01-10-2023)“…Abstract Vegetation carbon turnover time ( τ ) is a central ecosystem property to quantify the global vegetation carbon dynamics. However, our understanding of…”
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Global distribution of groundwater‐vegetation spatial covariation
Published in Geophysical research letters (16-05-2017)“…Groundwater is an integral component of the water cycle, and it also influences the carbon cycle by supplying moisture to ecosystems. However, the extent and…”
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Global Convergence in the Temperature Sensitivity of Respiration at Ecosystem Level
Published in Science (American Association for the Advancement of Science) (13-08-2010)“…The respiratory release of carbon dioxide (CO₂) from the land surface is a major flux in the global carbon cycle, antipodal to photosynthetic CO₂ uptake…”
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Water-stress-induced breakdown of carbon–water relations: indicators from diurnal FLUXNET patterns
Published in Biogeosciences (20-04-2018)“…Understanding of terrestrial carbon and water cycles is currently hampered by an uncertainty in how to capture the large variety of plant responses to drought…”
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Multiple-constraint inversion of SCOPE. Evaluating the potential of GPP and SIF for the retrieval of plant functional traits
Published in Remote sensing of environment (01-12-2019)“…The most recent efforts to provide remote sensing (RS) estimates of plant function rely on the combination of Radiative Transfer Models (RTM) and…”
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Evaluation of climate‐related carbon turnover processes in global vegetation models for boreal and temperate forests
Published in Global change biology (01-08-2017)“…Turnover concepts in state‐of‐the‐art global vegetation models (GVMs) account for various processes, but are often highly simplified and may not include an…”
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Memory effects of climate and vegetation affecting net ecosystem CO2 fluxes in global forests
Published in PloS one (06-02-2019)“…Forests play a crucial role in the global carbon (C) cycle by storing and sequestering a substantial amount of C in the terrestrial biosphere. Due to temporal…”
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Forest biomass retrieval approaches from earth observation in different biomes
Published in ITC journal (01-05-2019)“…The amount and spatial distribution of forest aboveground biomass (AGB) were estimated using a range of regionally developed methods using Earth Observation…”
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Understanding Disturbance Regimes From Patterns in Modeled Forest Biomass
Published in Journal of advances in modeling earth systems (01-06-2024)“…Natural and anthropogenic disturbances are important drivers of tree mortality, shaping the structure, composition, and biomass distribution of forest…”
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Large‐scale variation in boreal and temperate forest carbon turnover rate related to climate
Published in Geophysical research letters (16-05-2016)“…Vegetation carbon turnover processes in forest ecosystems and their dominant drivers are far from being understood at a broader scale. Many of these turnover…”
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A generalizable normalization for assessing plant functional diversity metrics across scales from remote sensing
Published in Methods in ecology and evolution (01-08-2023)“…Remote sensing (RS) increasingly seeks to produce global‐coverage maps of plant functional diversity (PFD) across scales. PFD can be quantified with metrics…”
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Toward Robust Parameterizations in Ecosystem‐Level Photosynthesis Models
Published in Journal of advances in modeling earth systems (01-08-2023)“…In a model simulating dynamics of a system, parameters can represent system sensitivities and unresolved processes, therefore affecting model accuracy and…”
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Quantifying the effect of forest age in annual net forest carbon balance
Published in Environmental research letters (2018)“…Forests dominate carbon (C) exchanges between the terrestrial biosphere and the atmosphere on land. In the long term, the net carbon flux between forests and…”
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