Canopy temperature (Tc) plays an important role in regulating the rates of mass and energy fluxes at the leaf surface. Better understanding of the relationship between Tc and water availability may enable more accurate monitoring of ecosystem functioning in a changing climate. Here, we used high spatiotemporal resolution thermal …
Journal: Agricultural And Forest Meteorology, Volume 357: 110206 (2024). DOI: https://doi.org/10.1016/j.agrformet.2024.110206 Sites: US-MtB, US-Wkg
Journal: Hydrological Processes, Volume 38 (10): (2024). DOI: 10.1002/hyp.15297 Sites: US-GLE, US-Mpj, US-MtB, US-NR1, US-Vcm
At the northern high latitudes, rapid warming, associated changes in the hydrological cycle, and rising atmospheric CO2 concentrations, [CO2], are observed at present. Under rapid environmental changes, it is important to understand the current and future trajectories of the CO2 budget in high-latitude ecosystems. In this …
Journal: Proceedings Of The National Academy Of Sciences, Volume 121 (44): (2024). DOI: https://doi.org/10.1073/pnas.2414539121 Sites: US-Uaf
Journal: Agricultural And Forest Meteorology, Volume 353: 110054 (2024). DOI: 10.1016/j.agrformet.2024.110054 Sites: US-NR1
Landscape drying associated with permafrost thaw is expected to enhance
microbial methane oxidation in arctic soils. Here we show that ice-rich,
Yedoma permafrost deposits, comprising a disproportionately large fraction
of pan-arctic soil carbon, present an alternate trajectory. Field and laboratory
observations indicate that …
Journal: Nature Communications, Volume 15 (1): (2024). DOI: 10.1038/s41467-024-50346-5 Sites: US-YNS
Understanding tree transpiration variability is vital for assessing ecosystem water-use efficiency and forest health amid climate change, yet most landscape-level measurements do not differentiate individual trees. Using canopy temperature data from thermal cameras, we estimated the transpiration rates of individual trees at Harvard …
Journal: Geophysical Research Letters, Volume 51 (20): (2024). DOI: https://doi.org/10.1029/2024GL111479 Sites: US-Ha1, US-NR1
Tidal wetlands provide valuable ecosystem services, including storing large amounts of carbon. However, the net exchanges of carbon dioxide (CO2) and methane (CH4) in tidal wetlands are highly uncertain. While several biogeochemical models can operate in tidal wetlands, they have yet to be parameterized and validated against high-frequency, …
Journal: Journal of Geophysical Research - Biogeosciences, Volume : (2024). DOI: 10.1029/2023JG007943 Sites: US-EDN, US-LA1, US-PLM, US-Srr, US-StJ
Journal: EGUsphere, Volume : (2024). DOI: 10.5194/egusphere-2023-2937 Sites: PA-Bas
Surface ozone monitoring sites in the tropics are limited, despite the risk that surface ozone poses to human health, tropical forest and crop productivity. Atmospheric chemistry models allow us to assess ozone exposure in unmonitored locations and evaluate the potential influence of changing policies and climate on air quality, …
Journal: Atmospheric Chemistry And Physics, Volume 24 (21): 12537-12555 (2024). DOI: 10.5194/acp-24-12537-2024 Sites: PA-Bas
Climate change is affecting the phenology of terrestrial ecosystems. In deciduous forests, phenology in leaf area index (LAI) is the primary driver of seasonal variation in the fraction of absorbed photosynthetically active radiation (fAPAR), which drives photosynthesis. Remote sensing has been widely used to estimate LAI and fAPAR. …
Journal: Agricultural And Forest Meteorology, Volume 333: 109389 (2023). DOI: 10.1016/j.agrformet.2023.109389 Sites: US-Ha1