-
Modifications and Enhancements to the NCAR Community Climate Model (CCM1)
This report describes the two new unresequenced program libraries created for CCM1 in the early fall, 1988 which incorporate fixes to several bugs that were discovered earlier,...- publication PDF
-
Recent tree die-off has little effect on streamflow in contrast to expected...
Recent bark beetle epidemics have caused regional-scale tree mortality in many snowmelt-dominated headwater catchments of western North America. Initial expectations of...- publication PDF
-
Turbulence in breaking mountain waves and atmospheric rotors estimated from...
Atmospheric turbulence generated in flow over mountainous terrain is studied using airborne in situ and cloud radar measurements over the Medicine Bow Mountains in southeast...- publication PDF
-
Why do models overestimate surface ozone in the Southeast United States?
Ozone pollution in the Southeast US involves complex chemistry driven by emissions of anthropogenic nitrogen oxide radicals (NOx = NO + NO2) and biogenic isoprene. Model...- publication PDF
-
Global water vapor trend from 1988 to 2011 and its diurnal asymmetry based...
This study analyzes trends in precipitable water (PW) over land and ocean from 1988 to 2011, the PW-surface temperature Ts relationship, and their diurnal asymmetry using...- publication PDF
-
Climate of the Upper Air: Southern Hemisphere: Volume 1: Temperatures, Dew...
This is the first volume in a set of four volumes which depict the upper air climatology of the world, covering selected climatic conditions in the Southern Hemisphere. Volume I...- publication PDF
-
TIME-GCM study of the ionospheric equatorial vertical drift changes during...
This modeling study quantifies the daytime low-latitude vertical E×B drift changes in the longitudinal wave number 1 (wn1) to wn4 during the major extended January 2006...- publication PDF
-
Anomalous electron heating effects on the E region ionosphere in TIEGCM
We have recently implemented a new module that includes both the anomalous electron heating and the electron-neutral cooling rate correction associated with the Farley-Buneman...- publication PDF
-
Ice in clouds experiment-layer clouds. Part II: Testing characteristics of...
Heterogeneous ice nucleation is a source of uncertainty in models that represent ice clouds. The primary goal of the Ice in Clouds Experiment--Layer Clouds (ICE-L) field...- publication PDF
-
Evaluation of leading modes of climate variability in the CMIP archives
The adequate simulation of internal climate variability is key for our understanding of climate as it underpins efforts to attribute historical events, predict on seasonal and...- publication PDF
-
Validation of the MIPAS CO2 volume mixing ratio in the mesosphere and lower...
We present the validation of Michelson Interferometer for Passive Atmospheric Sounding (MIPAS) CO2 daytime concentration in the mesosphere and lower thermosphere by comparing...- publication PDF
-
Developing the framework for integrating autonomous unmanned aircraft...
This paper introduces an engineering approach to develop autonomous unmanned aircraft systems technology for integration in future weather modification (cloud seeding) programs...- publication PDF
-
Distance-dependent filtering of background error covariance estimates in an...
The usefulness of a distance-dependent reduction of background error covariance estimates in an ensemble Kalman filter is demonstrated. Covariances are reduced by performing an...- publication PDF
-
Representation of vertical atmospheric structures by radio occultation...
Global positioning system (GPS) radio occultation (RO) is capable of retrieving vertical profiles of atmospheric parameters with high resolution (<100 m), which can be...- publication PDF
-
The setup of the MesoVICT project
Recent advancements in numerical weather prediction (NWP) and the enhancement of model resolution have created the need for more robust and informative verification methods. In...- publication PDF
-
Sulfuric acid and OH concentrations in a boreal forest site
As demonstrated in a number of investigations, gaseous sulfuric acid plays a central role in atmospheric aerosol formation. Using chemical ionization mass spectrometer the gas-...- publication PDF
-
Warm phase of AMV damps ENSO through weakened thermocline feedback
Interactions between ocean basins affect El Nino-Southern Oscillation (ENSO), altering its impacts on society. Here, we explore the effect of Atlantic Multidecadal Variability...- publication PDF
-
Future changes in European severe convection environments in a regional...
The occurrence of environmental conditions favorable for severe convective storms was assessed in an ensemble of 14 regional climate models covering Europe and the Mediterranean...- publication PDF
-
Buoyant magnetic loops generated by global convective dynamo action
Our global 3D simulations of convection and dynamo action in a Sun-like star reveal that persistent wreaths of strong magnetism can be built within the bulk of the convention...- publication PDF
-
Impact of bay-breeze circulations on surface air quality and boundary layer export
Meteorological and air-quality model simulations are analyzed alongside observations to investigate the role of the Chesapeake Bay breeze on surface air quality, pollutant...- publication PDF
