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Numerical Forecasting of Winds in the Terminal Environment
This report describes a method for forecasting low-level winds in the Terminal Environment in the 30 to 60 minute timeframe. Tests are performed using data from Lincoln Labs'...- publication PDF
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Role of tropical variability in driving decadal shifts in the southern...
The Southern Hemisphere summertime eddy-driven jet and storm tracks have shifted poleward over the recent few decades. In previous studies, explanations have mainly stressed the...- publication PDF
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How emissions, climate, and land use change will impact mid-century air...
We use a global coupled chemistry-climate-land model (CESM) to assess the integrated effect of climate, emissions and land use changes on annual surface O₃ and PM2.5 in the...- publication PDF
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An idealized test of the response of the Community Atmosphere Model to...
A set of idealized experiments are developed using the Community Atmosphere Model (CAM) to understand the vertical velocity response to reductions in forcing scale that is known...- publication PDF
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Understanding the limitations of gyrochronology for old field stars
Nearly half a century has passed since the initial indications that stellar rotation slows while chromospheric activity weakens with a power-law dependence on age, the so-called...- publication PDF
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Climate forcing and trends of organic aerosols in the Community Earth System...
The Community Earth System Model version 2 (CESM2) includes three main atmospheric configurations: the Community Atmosphere Model version 6 (CAM6) with simplified chemistry and...- publication PDF
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Assessment of uncertainty sources in snow cover simulation in the Tibetan Plateau
Snow cover over the Tibetan Plateau (TP) plays an important role in Asian climate. State-of-the-art models, however, show significant simulation biases. In this study, we assess...- publication PDF
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Is the detection of accelerated sea level rise imminent?
Global mean sea level rise estimated from satellite altimetry provides a strong constraint on climate variability and change and is expected to accelerate as the rates of both...- publication PDF
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Application of MJO simulation diagnostics to climate models
The ability of eight climate models to simulate the Madden-Julian oscillation (MJO) is examined using diagnostics developed by the U.S. Climate Variability and Predictability...- publication PDF
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Understanding the global variability in thermospheric nitric oxide flux...
We present the first-ever global assessment of thermospheric nitric oxide infrared radiative flux (NOF) variability. NOF (W/m(2)) from 100-to 250-km altitude is extracted from...- publication PDF
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The role of solar wind density in cross polar cap potential saturation under...
The role of solar wind density in the cross polar cap potential (CPCP) response under northward interplanetary magnetic field is investigated with observation-based global...- publication PDF
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Spreading speed of magnetopause reconnection x-lines using ground-satellite...
Conceptual and numerical models predict that magnetic reconnection starts at a localized region and then spreads out of the reconnection plane. At the Earth's magnetopause this...- publication PDF
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Propagation delays induced in GPS signals by dry air, water vapor,...
Dry air, water vapor, hydrometeors, and other particulates (sand, dust, aerosols, and volcanic ash) in the atmosphere introduce microwave propagation delays. These delays must...- publication PDF
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How well are we measuring snow: The NOAA/FAA/NCAR Winter Precipitation Test Bed
This paper presents recent efforts to understand the relative accuracies of different instrumentation and gauges with various windshield configurations to measure snowfall....- publication PDF
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Deglacial variability of South China hydroclimate heavily contributed by...
The deglacial hydroclimate in South China remains a long-standing topic of debate due to the lack of reliable moisture proxies and inconsistent model simulations. A recent...- publication PDF
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Carbon-nitrogen interactions regulate climate-carbon cycle feedbacks:...
Inclusion of fundamental ecological interactions between carbon and nitrogen cycles in the land component of an atmosphere-ocean general circulation model (AOGCM) leads to...- publication PDF
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The topology and behavior of magnetic fields emerging at the solar photosphere
The nature of flux emerging through the surface layers of the Sun is examined in the light of new high-resolution magnetic field observations from the Hinode space mission. The...- publication PDF
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The role of three-dimensional transport in driving enhanced electron...
Magnetic reconnection is an important driver of energetic particles in many astrophysical phenomena. Using kinetic particle-in-cell simulations, we explore the impact of three-...- publication PDF
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Gravity wave variations during the 2009 stratospheric sudden warming as...
ECMWF-T799 is used to study gravity wave (GW) variations during the 2009 stratospheric sudden warming (SSW) in the Arctic. The magnitude and occurrence of GWs correlate with the...- publication PDF
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Investigating Alfvénic wave propagation in coronal open-field regions
The physical mechanisms behind accelerating solar and stellar winds are a long-standing astrophysical mystery, although recent breakthroughs have come from models invoking the...- publication PDF
