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Injection of lightning-produced NOx, water vapor, wildfire emissions, and...
During the Deep Convective Clouds and Chemistry (DC3) experiment in summer 2012, airborne measurements were performed in the anvil inflow/outflow of thunderstorms over the...- publication PDF
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Long-term changes in solar quiet (Sq) geomagnetic variations related to...
The daily amplitude of the solar quiet (Sq) magnetic variation of the horizontal intensity, H, of observatories at low and midlatitudes is analyzed, in search of significant...- publication PDF
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Comprehensive evaluation of the Variable Infiltration Capacity (VIC) model...
Since the second phase of the North American Land Data Assimilation System (NLDAS-2) was operationally implemented at NOAA/NCEP as part of the production suite in August 2014,...- publication PDF
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Experimental tropical cyclone forecasts using a variable-resolution global model
Tropical cyclone (TC) forecasts at Δx~14-km horizontal resolution (0.125°) are completed using variable-resolution (V-R) grids within the Community Atmosphere Model (CAM)....- publication PDF
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Assessing tropical cyclone trends in the context of potential sampling biases
Recently observed trends in the tropical cyclone record are assessed in the context of potential sampling biases. Multi-member syntheses of the hurricane record are created and...- publication PDF
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Ionospheric correction of GPS radio occultation data in the troposphere
For inversions of the GPS radio occultation (RO) data in the neutral atmosphere, this study investigates an optimal transition height for replacing the standard ionospheric...- publication PDF
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How much snow falls on the Antarctic ice sheet?
Climate models predict Antarctic precipitation to increase during the 21st century, but their present day Antarctic precipitation differs. A model-independent climatology of the...- publication PDF
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On the formation of a fast thermospheric zonal wind at the magnetic dip equator
Simulations with the NCAR Thermosphere - Ionosphere - Electrodynamics General Circulation Model (TIE-GCM) have been carried out to understand the cause of strong thermospheric...- publication PDF
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Global fine-scale changes in ambient NO2 during COVID-19 lockdowns
Nitrogen dioxide (NO2) is an important contributor to air pollution and can adversely affect human health(1-9). A decrease in NO2 concentrations has been reported as a result of...- publication PDF
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Precipitation characteristics of easterly waves across the global tropics
Tropical easterly waves (TEWs) are a recurrent mode of low-latitude weather that are often convectively coupled and impact precipitation extremes. Previous work has examined the...- publication PDF
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Substantial global influence of anthropogenic aerosols on tropical cyclones...
Over the past 40 years, anthropogenic aerosols have been substantially decreasing over Europe and the United States owing to pollution control measures, whereas they have...- publication PDF
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NCAR release of CAM-SE in CESM2.0: A reformulation of the spectral element...
It is the purpose of this paper to provide a comprehensive documentation of the new NCAR (National Center for Atmospheric Research) version of the spectral element (SE)...- publication PDF
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Regional and urban column CO trends and anomalies as observed by MOPITT over 16 years
Atmospheric carbon monoxide (CO) concentrations have decreased since the beginning of the century, and the rate of decrease depends on the region. Depending on how regions are...- publication PDF
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Improvement of snow gauge collection efficiency through a knowledge of solid...
The collection efficiency of a typical precipitation gauge-shield configuration decreases with increasing wind speed, with a high scatter for a given wind speed. The high...- publication PDF
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Twenty-first century hydroclimate: A continually changing baseline, with...
Variability in hydroclimate impacts natural and human systems worldwide. In particular, both decadal variability and extreme precipitation events have substantial effects and...- publication PDF
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Accelerating atmospheric gravity wave simulations using machine learning:...
Gravity waves (GWs) and their associated multi-scale dynamics are known to play fundamental roles in energy and momentum transport and deposition processes throughout the...- publication PDF
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Basic characteristics of atmospheric particles, trace gases and meteorology...
We have analyzed one year (July 2006-July 2007) of measurement data from a relatively clean background site located in dry savannah in South Africa. The annual-median trace gas...- publication PDF
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An evaluation of ENSO asymmetry in the community climate system models: A...
The asymmetry between El Niño and La Niña is a key aspect of ENSO that needs to be simulated well by models in order to fully capture the role of ENSO in the climate system....- publication PDF
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Defining ecological drought for the twenty-first century
Droughts of the twenty-first century are characterized by hotter temperatures, longer duration, and greater spatial extent, and are increasingly exacerbated by human demands for...- publication PDF
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Mechanisms governing interannual variability of upper-ocean temperature in a...
The interannual variability in upper-ocean (0 - 400 m) temperature and governing mechanisms for the period 1968 - 97 are quantified from a global ocean hindcast simulation...- publication PDF
