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AGU Advances
Scopus
ISSN 2576-604X · Wiley · 426 artikel di indeks
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Artikel Jurnal
Interpreting Changes in Global Methane Budget in a Chemistry‐Climate Model Constrained With Methane and Isotopic Observations
Abstract The continuous increase in atmospheric methane (CH4) concentrations over the past few decades has become a major concern due to its strong role as a greenhouse gas contributing to climate change. In this work, we investigate the changes in the global methane budget using a global…
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Artikel Jurnal
Tectonics as a Regulator of Shoreline Retreat and Rocky Coast Evolution Across Timescales
Abstract Rocky coast morphology is shaped by interactions between wave action, sea level, and tectonics over millennial time scales. However, a clear and quantifiable signature of tectonic uplift on decadal to centennial shoreline retreat rates is outstanding. We isolate the contribution of…
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Artikel Jurnal
Back‐Propagating Earthquakes on Simple Faults
Abstract Back‐propagating earthquakes, characterized by a secondary front reversing into previously ruptured areas, challenge conventional models of rupture dynamics and have been increasingly documented in recent years. The conditions for this phenomenon remain poorly understood: while rupture…
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Artikel Jurnal
The Growing Threat of Extreme Drought‐Heat to the Amazon Carbon Sink
Abstract The Amazon rainforest is a critical regulator of the global carbon cycle, yet its resilience to compound climate extremes remains uncertain. The severe drought–heat event of 2023, marked by record temperatures and hydrological stress, offers an opportunity to examine the vulnerability of…
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Artikel Jurnal
Orbital Variability in Grazing Proportion: New Insights From Sedimentary Amino Acid δ15N Records of the Western Equatorial Pacific
Abstract The carbon sequestration capacity of the biological carbon pump (BCP) is determined by surface ocean carbon fixation and the transportation of fixed carbon to the ocean interior, which is closely linked to the trophic structure of planktonic ecosystem. However, previous biogeochemical…
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How Sediment Supply, Sea‐Level, and Glacial Isostatic Oscillations Drive Alluvial River Long‐Profile Evolution and Terrace Formation
Abstract For over a century, alluvial river terraces have been used as archives of tectonic deformation or changes in water discharge, sediment supply, and sea level. Despite this long history, such efforts remain challenging: using terraces as deformation markers requires knowledge of their…
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Global Perspectives on Barriers and Enablers to Inclusion, Diversity, Equity, and Accessibility (IDEA) in the Field of Earth Observation
Abstract The experiences of Earth observation (EO) professionals from underserved and underrepresented backgrounds are under‐documented, which this study seeks to rectify. We interviewed 55 individuals from various organizations supporting underrepresented EO professionals and coded their responses…
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Bursty Precipitation of Relativistic Electrons Unveiled by CIRBE/REPTile‐2 Measurements and Their Physical Implications
Abstract Energetic electron precipitation plays a pivotal role in shaping Earth's radiation belt dynamics and drives significant physical and chemical changes in the upper atmosphere. However, the detailed mechanisms governing the loss of relativistic electrons have remained unclear, largely due to…
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Lessons From Uganda's Earth Observation‐Based Disaster Risk Financing Program
Abstract Earth observation (EO) technologies are increasingly driving parametric insurance and risk financing for climate disasters, yet few operational programs demonstrate effective integration within national government systems. Uganda's Disaster Risk Financing Program (2016–2020) provides a…
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Reduced Vegetation Uptake During the Extreme 2023 Drought Turns the Amazon Into a Weak Carbon Source
Abstract In 2023, the biogeographic Amazon experienced temperature anomalies of 1.5°C above the 1991–2020 average from September to November. These conditions were driven by high sea surface temperature in the Atlantic and Pacific oceans, together with reduced moisture advection from the Atlantic…
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No “Wet Gets Wetter” in Kilometer‐Scale Mock‐Walker Circulations
Abstract Many climate model simulations and limited observations indicate that regions of tropical ascent and precipitation contract in response to surface warming. This response has well‐studied implications for the width of the zonal‐ and annual‐mean Intertropical Convergence Zone, but its…
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Disequilibrium and Soft Tissue Pump Contributions to Glacial CO2 Drawdown
Abstract A more “efficient” biological pump is thought to have played a key role in glacial CO2 drawdown, with two principal mechanisms invoked to stem the CO2 “leak” from the modern Southern Ocean. The first sees a strengthened soft tissue pump, associated with a reduction in the ocean's…
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Artikel Jurnal
Fire Spread, Intensity, and Emissions Observations by Multiple Satellites: The Southern California Wildfires of January 2025
Abstract In January 2025, wildfires caused catastrophic impacts to the infrastructure, communities, and environment of Los Angeles. This study documents the remotely sensed fire spread, intensity, and smoke emissions from the wildfires by leveraging fire and emission observations from multiple…
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Seasonal Ice Cover Could Allow Liquid Lakes to Persist in a Cold Mars Paleoclimate
Abstract Geomorphic and stratigraphic studies of Mars prove that extensive liquid water flowed and pooled on the surface early in Mars' history. Martian paleoclimate models, however, have difficulty simulating climate conditions warm enough to maintain liquid water on early Mars. Reconciling the…
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Runoff Reconstructions and Future Projections Indicate Highly Variable Water Supply From Pacific Rim Water Towers
Abstract Anthropogenic climate change affects regional hydrological cycles and poses significant challenges to the sustainable supply of freshwater. The Central China water tower (CCWT) is the key source region feeding the Yangtze and Yellow Rivers, and its runoff is indispensable for the…
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On Storm Tracks, Weather Regimes, and a Wave Breaking Recipe
Abstract The mid‐latitude atmospheric circulation is often described as a combination of low‐frequency variability, such as weather regimes (WRs) that can persist for weeks, and high‐frequency variability, including synoptic systems that shape our daily weather. In the North Atlantic, regimes such…
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Shifts in Atmospheric Composition Since the Preindustrial Era Modified the Transport and Deposition of Mercury
Abstract The atmospheric lifetime of mercury (Hg) determines its global spread and the delivery of this toxic pollutant to remote ecosystems. Previous studies have generally assumed that the chemical lifetime of elemental mercury (Hg0) has remained constant across historical time periods, mirroring…
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Lithospheric Delamination Below the North American Midcontinent Ceased Subsidence in Cratonic Basins
Abstract Cratonic lithospheres carry a long history of tectonic modifications that result in heterogeneous structures, as revealed by an increasing number of geophysical observations. The existence of cratonic basins indicates protracted periods of tectonic modification, causing subsidence within…
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Observed Climatic Variability of Global Ocean Stratification
Abstract Oceanic stratification plays a key role in climate by modulating the ocean's resistance to be mixed vertically. However, the climatic variability of stratification remains little documented beyond the deepest reach of winter mixing. Here, we address this gap by performing a global…