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Volcanic drivers of stratospheric sulfur in GFDL ESM4
Stratospheric injections of sulfur dioxide from major volcanic eruptions perturb the Earth's global radiative balance and dominate variability in stratospheric sulfur loading....- publication PDF
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Extending ensemble Kalman filter algorithms to assimilate observations with...
Data assimilation (DA), the statistical combination ofcomputer models with measurements, is applied in a variety of scientificfields involving forecasting of dynamical systems,...- publication PDF
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Field Observations of the Kinematics of Hailstones
This report studies the kinematic behavior of naturally falling hailstones using stroboscopic photography in a mobile van. The experiment is described and the results concerning...- publication PDF
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An experiment on risk-based decision-making in water management using...
The use of probabilistic forecasts is necessary to take into account uncertainties and allow for optimal risk-based decisions in streamflow forecasting at monthly to seasonal...- publication PDF
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Evaluations of tropospheric aerosol properties simulated by the community...
A sectional aerosol model (CARMA) has been developed and coupled with the Community Earth System Model (CESM1). Aerosol microphysics, radiative properties, and interactions with...- publication PDF
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A spectral stochastic kinetic energy backscatter scheme and its impact on...
Understanding model error in state-of-the-art numerical weather prediction models and representing its impact on flow-dependent predictability remains a complex and mostly...- publication PDF
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Identifying sensitivities in flood frequency analyses using a stochastic...
This study employs a stochastic hydrologic modeling framework to evaluate the sensitivity of flood frequency analyses to different components of the hydrologic modeling chain....- publication PDF
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The Sunrise Mission
The first science flight of the balloon-borne Sunrise telescope took place in June 2009 from ESRANGE (near Kiruna/Sweden) to Somerset Island in northern Canada. We describe the...- publication PDF
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Air pollution, air quality, and climate change
The introduction of gases and particulate contaminants in the atmosphere due to natural or human activities causes air pollution. The concentration and toxicity of these...- publication PDF
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Toward improving ice water content and snow-rate retrievals from radars....
Microphysical data and radar reflectivities (Z(e), -15 < Z(e) < 10 dB) measured from flights during the NASA Tropical Clouds, Convection, Chemistry and Climate field...- publication PDF
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Balanced and coherent climate estimation by combining data with a biased...
Given a biased coupled model and the atmospheric and oceanic observing system, maintaining a balanced and coherent climate estimation is of critical importance for producing...- publication PDF
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Forecasts of opportunity for Northern California soil moisture
Soil moisture anomalies underpin a number of critical hydrological phenomena with socioeconomic consequences, yet systematic studies of soil moisture predictability are limited....- publication PDF
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An adjoint sensitivity-based data assimilation method and its comparison...
An adjoint sensitivity-based data assimilation (ASDA) method is proposed and applied to a heavy rainfall case over the Korean Peninsula. The heavy rainfall case, which occurred...- publication PDF
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Self-stratification of tropical cyclone outflow. Part I: Implications for...
Extant theoretical work on the steady state structure and intensity of idealized axisymmetric tropical cyclones relies on the assumption that isentropic surfaces in the storm...- publication PDF
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Science of nowcasting Olympic weather for Vancouver 2010 (SNOW-V10): A world...
A World Weather Research Programme (WWRP) project entitled the Science of Nowcasting Olympic Weather for Vancouver 2010 (SNOW-V10) was developed to be associated with the...- publication PDF
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The First Moments of the Variance- and Cross-spectra of Standard and...
This Technical Note was prepared during the author's year-long research stay at NCAR's Atmospheric Technology Division (ATD). It is a translated, revised and slightly extended...- publication PDF
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What controls stratospheric water vapor in the NH summer monsoon regions?
Water vapor in the lower stratosphere exhibits localized maximum values during Northern Hemisphere summer in the Asian and North American (NA) monsoon regions. The processes...- publication PDF
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The role of vertical wind shear in modulating maximum supercell updraft velocities
Observed supercell updrafts consistently produce the fastest mid- to upper-tropospheric vertical velocities among all modes of convection. Two hypotheses for this feature are...- publication PDF
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An investigation of ammonia and inorganic particulate matter in California...
Airborne observations from the California Research at the Nexus of Air Quality and Climate Change (CalNex) campaign in May and June 2010 are used to investigate the role of...- publication PDF
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WRF-Fire: Coupled weather-wildland fire modeling with the weather research...
A wildland fire-behavior module, named WRF-Fire, was integrated into the Weather Research and Forecasting (WRF) public domain numerical weather prediction model. The fire module...- publication PDF
