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Title: PyDDA: A Pythonic Direct Data Assimilation Framework for Wind Retrievals

Journal Article · · Journal of Open Research Software
DOI:https://doi.org/10.5334/jors.264· OSTI ID:1721586
ORCiD logo [1];  [1];  [2];  [3];  [1]
  1. Argonne National Lab. (ANL), Argonne, IL (United States)
  2. NASA Marshall Space Flight Center (MSFC), Huntsville, AL (United States)
  3. National Oceanic and Atmospheric Administration (NOAA), Normal, OK (United States); Univ. of Oklahoma, Norman, OK (United States)
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This software assimilates data from an arbitrary number of weather radars together with other spatial wind fields (eg numerical weather forecasting model data) in order to retrieve high resolution three dimensional wind fields. PyDDA uses NumPy and SciPy’s optimization techniques combined with the Python Atmospheric Radiation Measurement (ARM) Radar Toolkit (Py-ART) in order to create wind fields using the 3D variational technique (3DVAR). PyDDA is hosted and distributed on GitHub at https://github.com/openradar/PyDDA. PyDDA has the potential to be used by the atmospheric science community to develop high resolution wind retrievals from radar networks. These retrievals can be used for the evaluation of numerical weather forecasting models and plume modelling. This paper shows how wind fields from 2 NEXt generation RADar (NEXRAD) WSR-88D radars and the High Resolution Rapid Refresh can be assimilated together using PyDDA to create a high resolution wind field inside Hurricane Florence.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Atmospheric Radiation Measurement (ARM) Data Center
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER)
Grant/Contract Number:
AC05-76RL01830
OSTI ID:
1721586
Journal Information:
Journal of Open Research Software, Vol. 8, Issue 8; ISSN 2049-9647
Publisher:
Software Sustainability InstituteCopyright Statement
Country of Publication:
United States
Language:
English

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The WSR-88D and the WSR-88D Operational Support Facility journal September 1993
A Method for the Initialization of the Anelastic Equations: Implications for Matching Models with Observations journal May 1978

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54 ENVIRONMENTAL SCIENCES
winds
radar
weather
high resolution
doppler