meteorology007     meteorology008     meteorology010     meteorology011

Overview

Expertise in boundary-layer meteorology, analysis of field observations, and scientific computing enables us to address critical societal issues, including the efficient production of renewable energy, the interaction of growing urban populations with weather and climate, and the consequences of energy production.

ATOC faculty member, Dr. Julie Lundquist, has developed and led research efforts to implement advanced methods for parameterizing turbulence in large- eddy simulations and numerical weather prediction models for applications in wind energy, urban meteorology, and transport and dispersion modeling. In addition to her general scientific interest in observations and modeling of atmospheric boundary layers, my interests have included a focus on stochastic methodologies for solving inverse problems.  Her research group explores the dynamics of the atmospheric boundary layer, with applications to wind energy, urban meteorology, and surface-atmosphere interaction. They employ numerical weather prediction models such as the Weather Research and Forecasting (WRF) model and other large-eddy simulation capabilities, and they participate in field experiments to expand our understanding of the atmospheric boundary layer. Dr. Katja Friedrich’s research focuses on investigating kinematic and microphysical processes relevant for cloud formation and enhancement of precipitation with special focus on improving quantitative precipitation estimation and forecast during heavy precipitation and wind storms in mountainous regions.

Core faculty

Other researchers

Specific topics and projects

  • Alpine Weather and Climate: A 10-year climatology on 4-dimensional precipitation characteristics using weather radar observations in the European Alps.
  • Analysis of McCall Glacier Ice Core and Related Modern Process Studies: The proposed research addresses two overarching questions related to climate in the eastern Alaskan Arctic: “How has climate, terrestrial ecology, and pollutant transport changed over the past 250 years in this region, based on ice core reconstructions from McCall Glacier?” and “How well can we overcome the challenges of core proxy interpretations from ice cores taken from small polythermal valley glaciers through modern-process studies?” To answer these questions we will conduct an inter-disciplinary analysis of ice core proxies, atmospheric dynamics, modern processes, and numerical ice flow modeling.
  • Antarctic Automatic Weather Station Program: The goal of this project is to continue to build, install, and maintain an Automatic Weather Station (AWS) network in Antarcitca and make observations from these stations available freely to the community. The current network and its observations already provide critical support to the scientific, operational and educational communities. This effort also supports the United States Antarctic Program (USAP) research and operations, and will further help advance the understanding of Antarctic meteorology and climate as well as illustrate Antarctica’s role in the global climate system.
  • Arctic extreme temperature and precipitation – Detection and projection of their climate change and physical causes: The goal of this project is to investigate possible changes in extreme temperatures and precipitation in the Arctic using data from both observations and regional and global climate models. The guiding hypothesis is: A robust understanding, detection and attribution of changes in extreme temperature or precipitation occurs through analysis that combines extreme temperature or precipitation events with the physical processes supporting them.
  • A Comprehensive Modeling Approach Towards Understanding and Prediction of the Alaskan Coastal System Response to Changes in an Ice-diminished Arctic: This project combines state-of-the-art regional modeling of sea ice, ocean, atmosphere and ecosystem to provide a system approach to advance the knowledge and predictive capability of the diverse impacts of changing sea ice cover on the bio-physical marine environment of coastal Alaska and over the larger region of the western Arctic Ocean.
  • Convection Initiation: along boundary-layer convergence zones and in mountains.
  • Hydrologic Responses to a Shrinking Arctic Sea Ice Cover: The focus of this project will be to test the hypothesis that the loss of Arctic sea ice and northern high latitude snow cover will invoke changes in the seasonality, spatial distribution and magnitudes of precipitation (P) and net precipitation (P-E) over the Arctic, which along with attendant rises in temperature, have ramifications for the freshwater budget of the Arctic Ocean and the mass balance of the Greenland ice sheet.
  • HyMeX- Hydrological cycle in the Mediterranean EXperiment: The U.S. participation in HyMeX is a collaborative effort between R. Rotunno (NCAR) K. Friedrich (U. of Colorado) V. Grubišić (U. of Vienna).
  • Oceanic Response to Mesoscale Atmospheric Circulations in Terra Nova Bay:  This project will utilize observations from an oceanographic mooring and from an unmanned aerial vehicle, known as an Aerosonde, to document the exchange of heat and moisture between the Terra Nova Bay polynya and the overlying atmosphere. This project will make the first late-winter three-dimensional atmospheric measurements over an Antarctic polynya, and as such will provide new insight into the atmospheric and oceanic processes acting in the polynya.
  • Radar Technology: This work includes bistatic radar, advanced dual-polarization/dual-Doppler capabilities for Doppler on Wheels (DOW) radars, and how mountains affect the quality of dual-polarization measurements.
  • SCOOP – Study of COnvective and Orographic Precipitation: This project combines data analysis with a field experiment with the purpose of investigating the multi-scale interactions existing between kinematic and microphysical processes during orographic precipitation events.
  • Stable Water Isotope Budget Near a Tall Tower in the Colorado Front Range: This project will observe and analyze the stable isotope composition of water vapor and precipitation, primarily at the 300 meter Boulder Atmospheric Observatory tower
  • Synoptic Climatology of Lake El’gygytgyn: In support of paleoclimate work being done at Lake El’gygytgyn an analysis of the synoptic climatology of Lake El’gygytgyn for the period 1960 to 2009 using a combination of global reanalysis and in-situ observations will be completed. This will result in an improved understanding of the relationship between near surface climate (temperature and precipitation) and changes in synoptic circulation. Analysis of any trends in temperature and precipitation over this period will also be completed, with any significant trends being attributed to changes in the frequency of occurrence of different synoptic patterns or to changes in the mean weather associated with given synoptic patterns.
  • Thunderstorm Microphysics: Analysis and observations of particle size distribution in supercell thunderstorms.
  • Understanding and Predictive Capability of Climate Change in the Arctic using a High-Resolution RACM: The primary science objective of this project is to synthesize understanding of past and present changes in Arctic climate and to improve decadal to centennial prediction of future regimes of Arctic climate system and their potential effects on global climate. A hierarchy of high-resolution Arctic climate system model (RACM) experiments, optimized for advanced parallel computers, will be performed to provide insight into the operation of Arctic climate that is not attainable with either individual regional component or global climate model experiments.
  • Urban Meteorology: How deep is the urban boundary layer?

Relevant courses

  • ATOC 3050. Principles of Weather
  • ATOC 3180. Aviation Meteorology
  • ATOC 4550/5550. Mountain Meteorology
  • ATOC 4750/5750. Desert Meteorology and Climate
  • ATOC 4770/5770. Wind Energy Meteorology

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