ISPRS Journal of Photogrammetry and Remote Sensing, Journal Year: 2025, Volume and Issue: 224, P. 94 - 112
Published: April 9, 2025
Language: Английский
Remote Sensing of Environment, Journal Year: 2024, Volume and Issue: 304, P. 114039 - 114039
Published: Feb. 17, 2024
Language: Английский
Citations
6
EarthArXiv (California Digital Library), Journal Year: 2024, Volume and Issue: unknown
Published: April 12, 2024
The Anthropocene Working Group (AWG) has concluded that the represents geological reality and should be linked with plethora of stratigraphic proxies initiate or show marked perturbations at around 1950s, defined using a Global boundary Stratotype Section Point (GSSP). We propose formalizing as series/epoch, terminating Holocene Series/Epoch single Crawfordian stage/age. GSSP located level where primary marker shows rapid increase in 239+240Pu concentrations (coinciding globally recognisable, isochronous signal first above-ground thermonuclear tests). signature comprises: a) lithostratigraphic signals, including many new proxies, such synthetic inorganic crystalline mineral-like compounds, microplastics, fly ash black carbon, addition to direct modification through human terraforming landscape indirect influences on sedimentary facies drivers climate change; b) chemostratigraphic signals organic contaminants isotopic shifts carbon nitrogen; c) fallout from nuclear weapons testing; d) effects warming, sea-level rise ocean acidification; e) biostratigraphic especially range abundance changes characterised by unprecedented rates extents non-native species introductions, increased population extinction extirpation rates. These correlative markers are present kinds deposits world. This ubiquity verifies can widely delineated sharply distinctive chronostratigraphic unit diverse terrestrial marine depositional environments, reflects major Earth System change will have geologically lasting consequences. As background, was suggested epoch Paul Crutzen 2000. AWG established 2009 Subcommission Quaternary Stratigraphy examine evidence for potential inclusion International Chronostratigraphic Chart (ICC) and, if warranted, formulate definition proposal. Various start dates were considered, mid-20th century found only one associated an extensive array effectively reflecting ‘Great Acceleration’ population, industrialization globalization. Alternative interpretations Anthropocene, informal ‘event’, considered detail inconsistent evidence.
Language: Английский
Citations
6
Communications Earth & Environment, Journal Year: 2024, Volume and Issue: 5(1)
Published: Aug. 29, 2024
Wetlands are the largest and most uncertain biological source of atmospheric methane, with hydrological fluctuations exacerbating this uncertainty. Here we critically explore complex relationship between methane emissions in wetlands by integrating observations from 31 FLUXNET wetland sites a comprehensive literature review. We present prevalence patterns water table their contribution to uncertainty fluxes. also highlight key pathways through which these affect production emission, such as soil redox heterogeneity, changes substrate availability alternative electron acceptor pool, different transport pathways, non-linear responses community structure activity methanogens methanotrophs fluctuations. This review aims improve accuracy emission reports carefully assessing biogeochemical kinetics under Water impact via biotic abiotic including redox, availability, flow, gas transport, microbial structure, according analysis observational data broad
Language: Английский
Citations
6
Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(20)
Published: March 16, 2024
Abstract Abiotic CH 4 production driven by Fenton‐type reactive oxygen species (ROS) has been confirmed to be an indispensable component of the atmospheric budget. While chemical reactions independent Fenton chemistry ROS are ubiquitous in nature, it remains unknown whether produced can drive abiotic production. Here, we first demonstrated at soil‐water interface under illumination. Leveraging this finding, polymeric carbon nitrides (CN x ) as a typical analogue natural geobattery material and dimethyl sulfoxide (DMSO) methyl donor were used unravel underlying mechanisms. We revealed that ROS, photocatalytically CN , oxidize DMSO into with high selectivity 91.5 %. Such process was further expanded various non‐Fenton‐type reaction systems, such electrocatalysis, pyrocatalysis sonocatalysis. This work provides insights geochemical cycle offers new route via integrated energy development.
Language: Английский
Citations
5
Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)
Published: July 6, 2024
Abstract Accumulating evidences are challenging the paradigm that methane in surface water primarily stems from anaerobic transformation of organic matters. Yet, contribution oxygenic photosynthetic bacteria, a dominant species water, to production remains unclear. Here we show methanogenesis triggered by interaction between bacteria and methanogenic archaea. By introducing cyanobacterium Synechocystis PCC6803 archaea Methanosarcina barkeri with redox cycling iron, CH 4 was induced coculture biofilms through both syntrophic (under anoxic conditions darkness) abiotic oxic illumination) during periodic dark-light cycles. We have further demonstrated other model various phyla, conjunction different exhibiting diverse energy conservation modes, as well common Fe-species. These findings revealed an unexpected link photosynthesis would advance our understanding bacteria’s ecological role global cycle. Such light-driven may be widely present nature.
Language: Английский
Citations
5
Global and Planetary Change, Journal Year: 2024, Volume and Issue: unknown, P. 104568 - 104568
Published: Sept. 1, 2024
Language: Английский
Citations
5
Atmospheric chemistry and physics, Journal Year: 2023, Volume and Issue: 23(19), P. 12651 - 12669
Published: Oct. 11, 2023
Abstract. Ozone is an important contributor to the radiative energy budget of upper troposphere (UT). Therefore, observing and understanding processes contributing ozone production are for monitoring progression climate change. Nitrogen oxides (NOx ≡ NO + NO2) volatile organic compounds (VOCs) two main tropospheric precursors formation. Depending on their abundances, can be sensitive changes in either these precursors. Here, we focus chemistry tropical between 30∘ S N latitude, where have a relatively large impact anthropogenic forcing. Based modeled trace gas mixing ratios meteorological parameters simulated by ECHAM5/MESSy2 Atmospheric Chemistry (EMAC) general circulation model, analyze variety commonly applied metrics including rates (P(O3)), formaldehyde (HCHO) NO2 ratio share methyl peroxy radicals (CH3O2) forming HCHO (α(CH3O2)) ability describe chemical regime. We show that distribution gases UT strongly influenced varying locations deep convection throughout year, observe peak values NOx P(O3) over continental areas South America Africa lightning frequent. find its response unsuitable determining dominant regime troposphere. Instead, α(CH3O2) HCHO/NO2 combination with ambient levels perform well as indicate whether or VOC sensitivity prevalent. effectively only knowledge availability HO2 required adequately represent O3 towards them. A study halving, doubling excluding demonstrates tropics major determinants regimes formation
Language: Английский
Citations
11
Atmospheric chemistry and physics, Journal Year: 2024, Volume and Issue: 24(9), P. 5659 - 5670
Published: May 15, 2024
Abstract. The escalating climate crisis requires rapid action to reduce the concentrations of atmospheric greenhouse gases and lower global surface temperatures. Methane will play a critical role in near-term warming due its high radiative forcing short lifetime. emissions have accelerated recent years, there is significant risk uncertainty associated with future growth natural emissions. largest sink methane occurs through oxidation reactions hydroxyl chlorine radicals. Enhanced could be potential approach remove methane. One method proposes addition iron salt aerosol (ISA) atmosphere, mimicking process proposed occur when mineral dust mixes chloride from sea spray form chlorides, which are photolyzed by sunlight produce Under right conditions, lofting ISA into atmosphere potentially Recognizing that removal must only considered an additive measure – to, not replacing, crucial anthropogenic gas emission reductions carbon dioxide roadmaps can valuable tool organize streamline interdisciplinary multifaceted research efficiently move towards understanding whether may viable socially acceptable or if it nonviable further should deprioritized. Here we present 5-year roadmap explore enhancement radical approach.
Language: Английский
Citations
4
Published: June 11, 2024
Abstract. Due to ongoing climate change, methane (CH4) emissions from vegetated wetlands are projected increase during the 21st century, challenging mitigation efforts aimed at limiting global warming. However, despite reports of rising emission trends, a comprehensive evaluation and attribution recent changes is still lacking. Here we assessed wetland CH4 2000 2020 based on an ensemble sixteen process-based models. Our results estimated average 158±24 (mean ± 1σ) Tg yr-1 for period 2010–2020, with decadal 6–7 compared decade 2000–2009. The increases in four latitudinal bands 90° S–30° S, 30° N, N–60° 60° N–90° N were 0.1–0.2 yr-1, 3.6–3.7 1.8–2.4 0.6–0.8 respectively, over two decades. modeled sensitivities temperature show reasonable consistency eddy covariance-based measurements 34 sites. Rising was primary driver increase, while precipitation atmospheric CO2 concentrations played secondary roles high levels uncertainty. These suggest change driving increased that direct sustained needed monitor developments.
Language: Английский
Citations
4
The Science of The Total Environment, Journal Year: 2025, Volume and Issue: 962, P. 178466 - 178466
Published: Jan. 1, 2025
Language: Английский
Citations
0