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How unexpected was the 2021 Pacific Northwest heatwave?
The 2021 Pacific Northwest heatwave featured record-smashing high temperatures, raising questions about whether extremes are changing faster than the mean, and challenging our...- publication PDF
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Limited surface impacts of the January 2021 sudden stratospheric warming
Subseasonal weather prediction can reduce economic disruption and loss of life, especially during "windows of opportunity" when noteworthy events in the Earth system are...- publication PDF
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Aircraft-induced hole punch and canal clouds: Inadvertent cloud seeding
The production of holes and channels in altocumulus clouds by two commercial turboprop aircraft is documented for the first time. An unprecedented dataset combining in situ...- publication PDF
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Global patterns of crop yield stability under additional nutrient and water inputs
Agricultural production must increase to feed a growing and wealthier population, as well as to satisfy increasing demands for biomaterials and biomass-based energy. At the same...- publication PDF
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Ensemble Bayesian model averaging using Markov Chain Monte Carlo Sampling
Bayesian model averaging (BMA) has recently been proposed as a statistical method to calibrate forecast ensembles from numerical weather models. Successful implementation of BMA...- publication PDF
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Parallel inference for massive distributed spatial data using low-rank models
Due to rapid data growth, statistical analysis of massive datasets often has to be carried out in a distributed fashion, either because several datasets stored in separate...- publication PDF
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Improvements in spectral wave modeling in tidal inlet seas
The performance of the spectral wind wave model SWAN in tidal inlet seas was assessed on the basis of extensive wave measurements conducted in the Amelander Zeegat tidal inlet...- publication PDF
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The evolving role of humans in weather prediction and communication
A series of webinars and panel discussions were conducted on the topic of the evolving role of humans in weather prediction and communication, in recognition of the 100th...- publication PDF
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Validation of ACE-FTS NâO measurements
The Atmospheric Chemistry Experiment (ACE), also known as SCISAT, was launched on 12 August 2003, carrying two instruments that measure vertical profiles of atmospheric...- publication PDF
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Antarctic sea ice climatology, variability, and late twentieth-century...
A preindustrial control run and an ensemble of twentieth-century integrations of the Community Climate System Model, version 4 (CCSM4), are evaluated for Antarctic sea ice...- publication PDF
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An evaluation of COSMIC radio occultation data in the lower atmosphere over...
The global positioning system (GPS) radio occultation (RO) method is a relatively new technique for taking atmospheric measurements for use in both weather and climate studies....- publication PDF
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6600/7600 Primer
This report covers the basic principles of topics ordinarily included in a beginning programming class in FORTRAN for the Control Data 6600/7600 computers. The text refers...- publication PDF
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Observing the diurnal cycle of coastal rainfall over Western Puerto Rico in...
The diurnal cycle of coastal rainfall over western Puerto Rico was studied with high-frequency radiosondes launched by undergraduate students at the University of Puerto Rico at...- publication PDF
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NCAR Graphics Generic Package Installer's Guide / Version 3.00a
This guides serves as an addendum to NCAR Graphics Generic Package Installer's Guide.- publication PDF
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Dynamics of the intraseasonal oscillations of the Indian south equatorial current
The spatial and temporal features of intraseasonal oscillations in the southwestern Indian Ocean are studied by analyzing model simulations for the Indo-Pacific region. The...- publication PDF
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Sq current system during stratospheric sudden warming events in 2006 and 2009
Ionospheric Sq current systems during unusually strong and prolonged stratospheric sudden warming (SSW) events in January 2006 and January 2009 are examined by analyzing ground-...- publication PDF
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How does vertical wind shear influence entrainment in squall lines?
The influence of vertical wind shear on updraft entrainment in squall lines is not well understood. To address this knowledge gap, a suite of high-resolution idealized numerical...- publication PDF
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Vertical structure, seasonal drawdown, and net community production in the...
We calculate net community production (NCP) during summer 2005-2006 and spring 2006 in the Ross Sea using multiple approaches to determine the magnitude and consistency of...- publication PDF
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Improving the simulation of extreme precipitation events by stochastic...
[1] Stochastic weather generators are commonly used to generate scenarios of climate variability or change on a daily timescale. So the realistic modeling of extreme events is...- publication PDF
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Forecasting the dynamic and electrodynamic response to the January 2009...
A whole atmosphere model has been used to simulate the changes in the global atmosphere dynamics and electrodynamics during the January 2009 sudden stratospheric warming (SSW)....- publication PDF