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Home » NOAA / GSL Staff Directory » Profile

Tanya Peevey

GSL Staff Profiles
325 Broadway
Boulder, CO 80305-3328

Professional Profile

Dr. Tanya Peevey
I grew up in Wasilla, Alaska and after graduating high school and taking a gap year I discovered my passion for space. So, I moved to Dallas, Texas to pursue a degree in Physics, grabbing a minor in Mathematics along the way. I have always enjoyed and excelled in science and was happy to finally find my specialty. Along the way, I realized that my options with a Physics Bachelor's degree were limited (I was not interested in being a high school teacher) and I needed to pursue a postgraduate degree. Using summer internships, I found a good match in Atmospheric Science and eventually graduated from the University of Colorado – Boulder with a Ph.D. focus on the dynamics of the Upper Troposphere – Lower Stratosphere. Following the Ph.D., I held a postdoctoral position in Germany that was a continuation of my Ph.D. work supported by an NSF Fellowship (see Awards). After the postdoc, I obtained a position as a Cooperative Institute employee in the NOAA Global Systems Laboratory at Boulder, CO. Both of my positions at NOAA have revolved around forecast verification and validation of forecast systems spanning from synoptic scale to convective scale (see Experience).

Beyond my love of science and knowledge I also enjoy socializing, crocheting, hiking, riding my road bike, documentaries, and, my favorite, Salsa Dancing! Also, I have always loved animals since I had many animals growing up on what I describe as a mini-farm (horses, pigs, steer, lambs, rabbits, cats, dogs … not all at the same time). As an adult, I have stuck with cats since they are both affectionate (mine have been) and very portable, ideal for a college student.

Research Interests

  • All things weather-related!
  • Software Development and Best Practices
  • Computer Programming/Science
  • Forecast Verification and Validation
  • Aviation Weather
  • Weather Forecast Models or Numerical Weather Prediction
  • Data Assimilation
  • Data Visualization and how to best communicate the information to the end-user
  • Observing System Simulation Experiments (OSSEs) and Observing System Experiments (OSEs)
  • Atmospheric Dynamics
  • High-Impact Weather Events
  • Upper Troposphere – Lower Stratosphere (UTLS)
  • Intersection of Science and Policy


  • Doctor of Philosophy in Atmospheric and Oceanic Science from the University of Colorado, Boulder, CO - 2013
  • Master of Science in Atmospheric and Oceanic Science from the University of Colorado, Boulder, CO - 2008
  • Bachelor of Science in Physics, Minor Math from the University of Texas, Dallas, TX - 2006


During my PhD, my focus was the atmospheric dynamics of the Upper Troposphere – Lower Stratosphere (UTLS). Specifically, I sought to further understand and characterize the double tropopause (DT), the thermal definition of the tropopause, using temperature and ozone data from the High-Resolution Dynamics Limb Sounder (HIRDLS) instrument on the AURA satellite. Most of the programming was in IDL. With this data, the location and movement of the DT could be identified, potentially indicating an air-mass exchange event that could be moving ozone rich air into the troposphere (a pollutant for that region). I also related the characteristics of the DT to other atmospheric phenomena such at Rossby wave breaking, the Tropopause Inversion Layer (TIL), and the Warm Conveyor Belt. This work was continued and expanded upon in my postdoctoral position by trying to integrate the high-resolution ozone data from HIRDLS into the Chemical Lagrangian Model of the Stratosphere (CLaMS) model developed in-house at Forschungszentrum Juelich, Germany.
After the postdoc I obtained a position at NOAA Global Systems Laboratory as a Cooperative Institute employee first through the Cooperative Institute for Research in Environmental Sciences (CIRES) at the University of Colorado, then the Cooperative Institute for Research in the Atmosphere (CIRA) at Colorado State University. During my employment at CIRES my work focused on conducting OSSE experiments that quantify the impact of future observations systems (e.g., satellites, ground-based observations) on a forecast system. These simulated observations are generated from a nature run (a simulated atmosphere) and ingested into the data assimilation and forecast system along with standard set of observations. The output is then analyzed with NCL and Bash scripts by comparing it to the nature run. The same is done for the control run (same model system but excludes the simulated observations) and if the errors of experimental run are less than the control run then the observations have improved the forecast. For this work, I both ran the NCEP Global Forecast System (GFS) model, analyzed the output, and presented results. I also lead the development of a software package meant to streamline the process for analyzing output from OSSE/OSE experiments.
After CIRES I changed groups and, while still sitting at NOAA, joined CIRA as part of the Forecast Impact and Quality Assessment Services (FIQAS) branch. This group is a diverse team whose mission is to provide an independent impact-based assessment of forecasts and targeted real-time information delivery to decision-makers. A key component of that is to understand the users' needs and to communicate meaningful information to decision-makers tasked with public safety services. As part of this group I have analyzed of a variety of US-centric products (IPA-F, OPC, GTG, HRRR, NCVA, GLMP) using Python, SQL, and GIT and have presented the results to the stakeholders (i.e., FAA and NCAR). The majority of these assessments have required me to process and compare the model output to independent observations such as METAR, Mesonet, CIWS/radar, pilot and turbulence reports from commercial aircraft, etc …

Professional Activities

  • AMS (American Meteorological Society)
  • AGU (American Geophysical Union)
  • ESWN (Earth Science Women’s Network)
  • UFS (Unified Forecast System)

Honors and Awards

  • GSD Director Directed Research Funds (DDRF) Award, 2015
  • NSF International Research Fellowship Program (IRFP), 2013
  • University Fellowship Award for travel to EGU 2011 Annual Meeting, 2011
  • Doctoral Student Funding, NASA Grant NAS5-97046, 2007-2012
  • UGGS Travel Award for travel to AGU 2009 Annual Meeting, 2008

Related Links


Wick, G. A., and Coauthors (2020), NOAA’s Sensing Hazards with Operational Unmanned Technology (SHOUT) Experiment Observations and Forecast Impacts. Bull. Amer. Meteor. Soc., 101, E968–E987, doi: 10.1175/BAMS-D-18-0257.1.
Mueller, M.J, A.C. Kren, L. Cucurull, S-P.F. Casey, R.N. Hoffman, R. Atlas, and T.R. Peevey(2020), Impact of refractivity profiles from a proposed GNSS-RO constellation on tropical cyclone forecasts in a global modeling system, Mon. Wea. Rev., 148, 3037-3057, doi: 10.1175/MWR-D-19-0360.1.
English, J.M, A.C. Kren, T.R. Peevey (2018), Improving winter storm forecasts with ObservingSystem Simulation Experiments (OSSEs). Part 2: Evaluating a gap in satellite data with idealized and targeted dropsondes, Earth and Space Sci., 5, 176-196, doi: 10.1002/2017EA000350.
Peevey, T.R., J.M. English, L. Cucurull, H. Wang, A.C. Kren (2018), Improving forecasts of USwinter storms with Observing System Simulation Experiments (OSSEs). Part 1: An idealized case study of three US storms, Mon. Wea. Rev., 146, 1341-1366, doi: 10.1175/MWR-D-17-0160.1.
Cucurull, L., R. Li, and T.R. Peevey (2017), Assessment of Radio Occultation Observations from the COSMIC-2 Mission with a Simplified Observing System Simulation ExperimentConfiguration. Mon. Wea. Rev., 145, 3581–3597, doi: 10.1175/MWR-D-16-0475.1
Peevey, T.R., J.C. Gille, C.R. Homeyer, and G.L. Manney (2014), The double tropopause and its dynamical relationship to the tropopause inversion layer in storm track regions, J. Geophys. Res., 119, 10194–10212, doi: 10.1002/2014JD021808.
Castanheira, J.M., T.R. Peevey, C.A.F. Marques, and M.A. Olsen (2012), Relationships amongBrewer-Dobson circulation, double tropopauses, ozone and stratospheric water vapour,Atmos. Chem. Phys., 12, 10195-10208.
Peevey, T.R., J.C. Gille, C.E. Randall, and A. Kunz (2012), Investigation of Double TropopauseSpatial and Temporal Global Variability Utilizing HIRDLS Temperature Observations, J. Geophys. Res., 117, D1, doi: 10.1029/2011JD016443.