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Evaluation of NOAA national water model parameter calibration in semi-arid...
The NOAA National Water Model (NWM), maintained and executed by the NOAA National Weather Service (NWS) Office of Water Prediction, provides operational hydrological guidance...- publication PDF
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3-D regional ionosphere imaging and SED reconstruction with a new TEC-based...
A new TEC-based ionospheric data assimilation system (TIDAS) over the continental US and adjacent area (20 degrees-60 degrees N, 60 degrees-130 degrees W, and 100-600 km) has...- publication PDF
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Do nudging tendencies depend on the nudging timescale chosen in atmospheric models?
Nudging is a ubiquitous capability of numerical weather and climate models that is widely used in a variety of applications (e.g., crude data assimilation, "intelligent"...- publication PDF
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Investigation of the viscous potential using an MHD simulation
The viscous interaction between the solar wind and Earth's magnetosphere is extremely difficult to study through direct observations. The viscous contribution to the polar cap...- publication PDF
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Interannual variability and trends in tropical ozone derived from SAGE II...
Long-term observations of stratospheric ozone from the Stratospheric Aerosol and Gas Experiment II (SAGE II) satellite (1984-2005) are combined with ozonesonde measurements from...- publication PDF
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On the interaction of internal gravity waves with a magnetic field - II....
We present results from numerical simulations of the interaction of internal gravity waves (IGW) with magnetic fields in the radiative interior of the Sun. In this second paper,...- publication PDF
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Sensitivity of the southern hemisphere wintertime teleconnection to the...
The Southern Hemisphere extratropical atmospheric circulation response to anomalous convection in the tropical western and eastern Pacific Ocean is distinctly different. The...- publication PDF
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Tropical Atlantic biases in CCSM4
This paper focuses on diagnosing biases in the seasonal climate of the tropical Atlantic in the twentieth-century simulation of the Community Climate System Model, version 4...- publication PDF
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Secondary organic aerosols from anthropogenic volatile organic compounds...
Anthropogenic secondary organic aerosol (ASOA), formed from anthropogenic emissions of organic compounds, constitutes a substantial fraction of the mass of submicron aerosol in...- publication PDF
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Response of trace gases to the disrupted 2015-2016 quasi-biennial oscillation
The quasi-biennial oscillation (QBO) is a quasiperiodic alternation between easterly and westerly zonal winds in the tropical stratosphere, propagating downward from the middle...- publication PDF
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Summer high-wind events and phytoplankton productivity in the Arctic Ocean
At the base of the marine food web, phytoplankton are an essential component of the Arctic Ocean ecosystem and carbon cycle. Especially after sea ice retreats and light becomes...- publication PDF
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Case Studies on Convective Storms / Case Study 8, 9 August 1974: First Echo Case
Observations obtained on a relatively small and isolated storm with radar, an instrumented glider and other tools are described. The winds aloft and the direction of motion of...- publication PDF
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Challenges in numerical weather prediction of the 10 August 2020 Midwestern...
A severe derecho impacted the Midwestern United States on 10 August 2020, causing over $12 billion (U.S. dollars) in damage, and producing peak winds estimated at 63 m sâ1,...- publication PDF
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Lagged effects regulate the inter-annual variability of the tropical carbon balance
Inter-annual variations in the tropical land carbon (C) balance are a dominant component of the global atmospheric CO2 growth rate. Currently, the lack of quantitative knowledge...- publication PDF
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Ground magnetic response to an extraordinary IMF BY flip during the May 2024...
In the present study we investigate the response of the dayside ground magnetic field to the sequence of interplanetary magnetic field (IMF) B Y changes during the May 2024...- publication PDF
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Data citations within NCAR/UCP
Federal agencies, professional societies, and research organizations in the geo-sciences are moving towards requiring researchers to formally cite data that led to a given...- publication PDF
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Future trends in stratosphere-to-troposphere transport in CCMI models
One of the key questions in the air quality and climate sciences is how tropospheric ozone concentrations will change in the future. This will depend on two factors: changes in...- publication PDF
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The influence of internal atmospheric variability on the ionosphere response...
The Whole Atmosphere Community Climate Model eXtended is used to investigate the extent to which neglecting the realistic day-to-day lower atmospheric variability introduces...- publication PDF
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Mitigation of 21st century Antarctic sea ice loss by stratospheric ozone recovery
We investigate the effect of stratospheric ozone recovery on Antarctic sea ice in the next half-century, by comparing two ensembles of integrations of the Whole Atmosphere...- publication PDF
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Cancellation exponents in helical and non-helical flows
Helicity is a quadratic invariant of the Euler equation in three dimensions. As the energy, when present helicity cascades to smaller scales where it dissipates. However, the...- publication PDF