npj Climate and Atmospheric Sciencenpj气候与大气科学
npj Climate and Atmospheric Science(英文缩写 NPJ CLIM ATMOS SCI),ISSN 2397-3722,eISSN 2397-3722,中文译名:npj气候与大气科学 是一本学术期刊。本页汇总该期刊的最新影响因子、分区信息以及最新收录于 PubMed 的文献,帮助您快速了解期刊全貌。
发文量统计区间：2025-09-27 至 2026-09-27，按本站收录文献的发表日期统计。
期刊介绍
历年影响因子趋势
| JCR 数据年份 | 影响因子 | JCR 分区 |
|---|---|---|
| 2021 | 9.448 | Q1 |
| 2022 | 9.000 | Q1 |
| 2023 | 8.500 | Q1 |
| 2024 | 8.400 | Q1 |
| 2025 | 9.600 | Q1 |
npj Climate and Atmospheric Science 最新收录文献
-
1. Tropopause-aware IVT and IWV sharpen atmospheric river detection over North America.
PMID:日期:2026-01-01Atmospheric rivers are among the most consequential moisture-transport systems shaping flood risk, hydroclimatic extremes, and water cycles across North America. Standard IVT/IWV threshold methods, however, fail to capture slender ARs or accurately gauge intensity due to neglected upper-tropospheric thermodynamics. Here, using ERA5 reanalysis (1984-2024), we modified IVT and IWV by incorporating a tropopause-aware thermodynamic weighting function calibrated with radiosonde profiles. Validation against radiosondes and SSMIS imagery confirms that the modified indices improve AR intensity and geometry estimation by 8.7% and narrow-filament detection by 12%. Four-decade seasonal trends reveal robust AR increases in spring, summer, and winter over eastern North America, and in winter and summer over the west. Furthermore, the modified IVT and IWV better revealed the dominant role of remote drivers in North American AR activity. Accordingly, stepwise regression findings showed that ENSO, PNA, PDO, and NAO explain more than 45% of regional AR variance. These findings emphasize the urgent need to embed upper-tropospheric thermodynamics in AR detection and their precise spatiotemporal activity for improved flood forecasting and climate projection.
-
2. Intensification of summer mesoscale convective systems in East China under global warming.
PMID:日期:2026-01-01Mesoscale Convective Systems (MCSs) are the primary drivers of extreme rainfall and flood hazards. Understanding their response to global warming is therefore important for improving climate projections and disaster risk reduction. In East China, however, evidence remains largely limited to case studies, and long-term projections of MCSs are scarce due to their poor representation in coarse-resolution climate models. Using convection-permitting model simulations with a pseudo-global warming approach, this study presents 22-summer projections of future MCSs over East China under the SSP5-8.5 scenario. Results show that future MCSs exhibit higher precipitation intensity and wider convective areas. Convective precipitation intensifies more than stratiform precipitation, indicating a transition toward more convection-dominated systems, accompanied by enhanced mid-level updrafts and super-Clausius-Clapeyron scaling of extreme rainfall. Increases in convective available potential energy (CAPE) and total column water vapor (TCWV) largely explain the intensification of maximum convective precipitation, with vertical zonal wind shear acting as a key dynamic modulator. The product of TCWV and vertical velocity is identified as an effective predictor of MCS peak precipitation. These findings imply heightened risks of intense rainfall from MCSs in East China and highlight the combined roles of thermodynamic and dynamic processes in shaping future MCSs.
-
3. Linking warm conveyor belts to the TEM circulation in Northern Hemisphere midlatitude winter.
PMID:日期:2026-01-01Warm conveyor belts (WCBs) are key ascending airstreams in extratropical cyclones that shape midlatitude moisture transport and precipitation. Here we show that WCB activity is tightly linked to the large-scale transformed Eulerian-mean (TEM) circulation in Northern Hemisphere winter. The climatological WCB frequency aligns with the rising branch of the TEM circulation, and the two exhibit strong day-to-day covariability. Variations in WCB activity correspond systematically to changes in large-scale eddy fluxes: enhanced eddy momentum flux (EMF) shifts WCB activity poleward through changes in ascent rate, while enhanced eddy heat flux (EHF) primarily strengthens WCB activity downstream over the Pacific, with little meridional displacement. WCBs account for up to 89% of EMF-related and 56% of EHF-related precipitation anomalies, with the exact fraction varying by latitude. These results demonstrate that the TEM framework provides insight into the zonal-mean imprint of WCB activity and associated precipitation, and how these relationships may change in the future.
-
4. High-resolution aerosol liquid water content in the contiguous United States using machine learning.
PMID:日期:2026-01-01Aerosol liquid water content (ALWC) plays an important role in climate and public health by influencing aerosol formation, chemical composition, and toxicity. However, ALWC remains sparsely measured and poorly constrained across space and time, despite its large variability. In this study, we derived a high-resolution (1 km × 1 km, daily) ALWC dataset for the contiguous US from 2000 to 2019. The dataset was generated by training machine learning (ML) models on outputs from a chemical transport model (GEOS-Chem) to capture the thermodynamic relationships between ALWC and relevant predictors, then applying these relationships to high-resolution, biased-corrected input datasets. Compared with GEOS-Chem simulations, the ML-based dataset better captures daily variations and spatial heterogeneity in ALWC. The predicted ALWC levels are highest in the Midwest US and lowest in the Western US, largely driven by regional differences in PM concentration, chemical composition, temperature, and relative humidity. Over the study period, ALWC declined significantly across most regions, driven primarily by the reduction in sulfate. We further demonstrate that ALWC provides a physically meaningful constraint for interpreting variability in water-soluble iron, a health-relevant fraction of aerosol metals, highlighting the potential value of this dataset for future studies of aerosol toxicity and epidemiological exposure.
-
5. Sunglint imprints of steady subcloud cells anchoring intermittent trade cumulus.
PMID:日期:2026-01-01How can seemingly random, shallow trade-wind clouds be predicted and their climate impact better evaluated? These clouds cool the planet but are hard to represent because they appear sparse and short-lived. We show that, beneath this apparent disorder, the flow is organized as a dense lattice of steady convective cells that tile the subcloud layer. These cells form the dynamic backbone of the cloud field, with their updraft walls serving as persistent launch points for cloud plumes. Spaceborne ocean-sunglint observations reveal a matching 1-2 km cellular texture beneath sparse cloud cover, consistent with the subcloud convective cells' morphology. Together, the modeled dynamics and sunglint fingerprint reframe trade cumulus as organized from below, suggesting a physics-based route to reduce climate-model uncertainty.
-
6. New horizons in statistical downscaling and AI approaches for sustainable km-scale climate simulations.
PMID:日期:2026-01-01Statistical downscaling translates coarse-resolution climate model output into locally relevant information for climate services and impact assessment. Recent advances in artificial intelligence (AI) enable high-resolution, probabilistic, and computationally efficient approaches. This paper provides a perspective on the evolution from classical to AI-driven and hybrid downscaling approaches, assesses key challenges related to interpretability, uncertainty, data availability, and computational requirements, and outlines physically constrained and generative frameworks that support decision-making across sectors.
-
7. Global asymmetries in the moisture origins of atmospheric river precipitation.
PMID:日期:2026-01-01Atmospheric rivers (ARs) are key agents of poleward heat and moisture transport, yet the extent to which tropical moisture directly feeds AR precipitation at higher latitudes remains debated. Here we present a forty-year global climatology of moisture sources for AR-related precipitation, combining deep learning-based AR detection with Lagrangian moisture tracking. We reveal that AR precipitation worldwide organizes into two coherent and contrasting moisture transport regimes. Along western continental boundaries, AR precipitation is predominantly sustained by extratropical moisture convergence, with tropical contributions typically limited to 30-40%, whereas eastern boundaries exhibit shorter transport pathways with substantially larger tropical contributions, averaging 60-70%. These persistent west-east asymmetries reflect systematic shifts in moisture origin as ARs evolve from early subtropical acquisition to mature extratropical transport. We further show a strong negative correlation between tropical contribution and latitude, demonstrating that direct tropical moisture delivery is not a requirement for AR precipitation at high latitudes. Instead, tropical moisture primarily preconditions AR formation, while the water mass that ultimately precipitates is progressively replaced along the poleward pathway. Taken together, our findings reconcile divergent assessments of tropical moisture influence on AR precipitation and thus deepen our understanding of how Earth's hydrological engine redistributes atmospheric water across the planet.
-
8. Constraining the intensive absorption properties of ambient organic aerosol particles based on pan-European observations.
PMID:日期:2026-01-01Organic aerosol particles (OA) can absorb solar radiation with varying efficiencies depending on their chemical composition and physical properties. This light-absorbing fraction of OA, commonly referred to as brown carbon (BrC), is difficult to accurately represent in climate models due to the inherent diversity of its optical properties. This variability arises from differences in emission sources and atmospheric processing, as well as from variations in experimental design and the analytical methods used to quantify BrC absorption. As a result, the climate effect of BrC remains uncertain. Here, we studied the light absorption properties of surface ambient OA using measurements from 17 sites across Europe. Combining multi-wavelength absorption measurements from filter-based photometers with OA mass concentrations and source apportionment derived from ACSM/AMS data, we derive empirical estimates of the OA mass absorption cross section (MAC), its wavelength dependence (AAE), the OA density (⍴), and the MAC associated with different primary and secondary OA sources. We further develop parameterizations that relate MAC, AAE and ⍴ to the ambient black carbon-to-organic aerosol ratio (eBC/OA) and propose a corresponding parameterization for the imaginary refractive index (k). Given the widespread availability of eBC and OA measurements in global monitoring networks, the framework presented here provides a practical approach for estimating the absorptive properties of surface OA particles under real-world conditions.
-
9. Projected and historical amplification of moisture fluxes towards Antarctica by synoptic eddies.
PMID:日期:2026-01-01Synoptic weather systems play a crucial role in transporting moisture to Antarctica. Climate models project significant changes in these systems, including a wintertime intensification and a summertime poleward shift, with implications for Antarctic ice mass balance. Our analysis of CMIP6 model output shows synoptic moisture fluxes across the Antarctic Circle increasing by 2-6% per decade under high-emission scenarios, accounting for 24% of winter and 93% of summer total moisture transport trends. This increase is mainly associated with enhanced eddy moisture anomalies rather than stronger eddy wind anomalies that are often used to gauge storm track activity. Eddy-driven moisture variability also accounts for a substantial fraction of inter-model uncertainty in future projections. Furthermore, using a large-ensemble approach, we show that differences between reanalysis and multi-model mean externally forced trends could possibly be due to natural climatic variability, while potential model biases cannot be excluded.
-
10. Unprecedented 2024 East Antarctic winter heatwave driven by polar vortex weakening and amplified by anthropogenic warming.
PMID:日期:2026-01-01During July-August 2024, East Antarctica experienced the most intense winter heatwave in the 46-year satellite era, with regional mean surface air temperatures across Dronning Maud Land exceeding the climatological mean by more than 9°C for 17 consecutive days. To explore the physical drivers and quantify the anthropogenic contribution to this unprecedented event, we propose a multi-model, multi-method attribution framework integrating regional climate model-based storyline attribution, circulation analogues, and large-ensemble probabilistic attribution. The results show that a pronounced weakening of the stratospheric polar vortex initiated a quasi-barotropic high-pressure anomaly, which enhanced meridional heat and moisture transport and accounted for approximately 50% of the observed surface warming. Across different models and attribution methods, synthesis of the attribution results indicates that anthropogenic warming intensified the event by approximately 0.7°C and more than doubled the likelihood of such exceptional winter heatwaves in the current climate. Probabilistic attribution further indicates that, compared to a natural climate without human influence, the likelihood of such events increases from 2-3 times today to ~6 times under moderate emissions and up to 26 times under high emissions by 2100. These findings reveal how human-induced warming is transforming even the coldest regions, with implications for ice shelf stability and predictability of future Antarctic extremes.