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Causes of extreme ridges that induce California droughts
California droughts are often caused by high-amplitude and persistent ridges near and off the west coast of North America without apparent connections with ENSO. Here with a...- publication PDF
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Recent trends in the near-surface climatology of the northern North American...
We examined climate trends in the northern North American Great Plains (NNAGP) from 1970 to 2015, a period that aligns with widespread land-use changes in this globally...- publication PDF
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Wind turbulence over misaligned surface waves and air-sea momentum flux....
The coupled dynamics of turbulent airflow and a spectrum of waves are known to modify air-sea momentum and scalar fluxes. Waves traveling at oblique angles to the wind are...- publication PDF
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Ozone sensitivity to varying greenhouse gases and ozone-depleting substances...
Ozone fields simulated for the first phase of the Chemistry-Climate Model Initiative (CCMI-1) will be used as forcing data in the 6th Coupled Model Intercomparison Project. Here...- publication PDF
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Toward improved short-term forecasting for Lake Victoria Basin. Part II:...
Lake Victoria is the largest freshwater lake in Africa, with around 30 million people living on its coastline, and it serves as one of the largest natural resources for East...- publication PDF
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A likely outcome of the sunspot peaks' influence on the North Atlantic...
The effect on the North Atlantic Oscillation of 15 sunspot peaks depends on whether the Oscillation is in-phase or out-of-phase with the sunspot peaks. When it is in-phase the...- publication PDF
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Global Carbon Budget 2022
Accurate assessment of anthropogenic carbon dioxide (CO2) emissions and their redistribution among the atmosphere, ocean, and terrestrial biosphere in a changing climate is...- publication PDF
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Global Carbon Budget 2023
Accurate assessment of anthropogenic carbon dioxide (CO2) emissions and their redistribution among the atmosphere, ocean, and terrestrial biosphere in a changing climate is...- publication PDF
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A new framework for identifying and investigating seasonal climate extremes
Previous studies have recognized the societal relevance of climatic extremes on the seasonal time scale and examined physical processes leading to individual high-impact extreme...- publication PDF
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Generation of turbulence through frontogenesis in sheared stratified flows
The large-scale structures in the ocean and the atmosphere are in geostrophic balance, and a conduit must be found to channel the energy to the small scales where it can be...- publication PDF
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Building an integrated U.S. National Climate Indicators System
During the development of the Third U.S. National Climate Assessment, an indicators system was recommended as a foundational product to support a sustained assessment process...- publication PDF
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Seasonal and hemispheric variations of the total auroral precipitation...
The auroral hemispheric power (HP) has been calculated from the averaged energy flux derived from Far-ultraviolet emission observations made by the global ultraviolet imager...- publication PDF
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The synthesis of potential factors contributing to the asynchronous warming...
Atmospheric conditions, topsoil properties and land cover conditions play essential roles in ground surface temperature (GST), surface air temperature (SAT) and their...- publication PDF
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Using high-resolution simulations to quantify underestimates of tornado...
Large-eddy simulations are used to produce realistic, high-resolution depictions of near-surface winds in translating tornadoes. The translation speed, swirl ratio, and vertical...- publication PDF
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Severe weather forecasts and public perceptions: An analysis of the 2011...
This paper uses the "Super Outbreak" of 2011 as a case study to examine the potential gaps between the dissemination of severe weather warnings and the public's behavioral...- publication PDF
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Observed versus simulated OH reactivity during KORUS-AQ campaign:...
We present a holistic examination of tropospheric OH reactivity (OHR) in South Korea using comprehensive NASA DC-8 airborne measurements collected during the KoreaâUnited...- publication PDF
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Relationships between extratropical precipitation systems and UTLS...
This study characterizes the relationship between extratropical precipitation systems to changes in upper troposphere and lower stratosphere (UTLS) temperature and tropopause...- publication PDF
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TAMS: A tracking, classifying, and variable-assigning algorithm for...
The Tracking Algorithm for Mesoscale Convective Systems (TAMS) is a tracking, classifying, and variable-assigning algorithm for mesoscale convective systems (MCSs). TAMS was...- publication PDF
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Misleading variations in estimated rotational frequency splittings of solar...
The aim of this paper is to investigate whether there are any 11-yr or quasi-biennial solar-cycle-related variations in solar rotational splitting frequencies of low-degree...- publication PDF
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Eye of the storm: Observing hurricanes with a small unmanned aircraft system
Unique data from seven flights of the Coyote small unmanned aircraft system (sUAS) were collected in Hurricanes Maria (2017) and Michael (2018). Using NOAA's P-3 reconnaissance...- publication PDF