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Rainmaker

Develops cloud-seeding systems to increase precipitation

Radar Meteorologist

Environmental SciencesPosted on Nov 9
Full-timeEl Segundo, CA, USA

About the Job

Requirements

  • A degree in meteorology, atmospheric science, physics, engineering, or a related field, or equivalent practical experience.
  • Demonstrated experience using weather radar observations to answer meteorological questions in research or operations.
  • A strong understanding of radar measurement principles, Doppler and polarimetric variables, sampling geometry, and common sources of error.
  • Knowledge of cloud microphysics and precipitation processes, including interpretation of observations in mixed-phase and winter weather.
  • Proficiency in Python for scientific data processing, analysis, and visualization.
  • Experience evaluating scientific methods against independent observations, diagnosing bias, and quantifying uncertainty.
  • Ability to take an open scientific question through data analysis to a defensible conclusion, with reproducible code and clear documentation.
  • Willingness to work onsite in El Segundo and travel for field campaigns as needed.

Responsibilities

  • Analyze scanning and vertically pointing radar observations to characterize cloud structure, precipitation processes, and the evolution of potential seeding signatures.
  • Develop and improve radar quality control, including treatment of clutter, interference, attenuation, calibration bias, and terrain blockage.
  • Develop and evaluate quantitative precipitation estimates for rain and snow, explicitly treating sampling limitations and retrieval uncertainty.
  • Combine radar data with seeding release records, winds, soundings, satellite observations, and in situ measurements to assess individual operations.
  • Design analyses that distinguish potential seeding responses from natural variability, test alternative explanations, and state what the observations can support.
  • Help design radar siting and scan strategies that capture cloud volumes and precipitation relevant to operational targeting and validation.
  • Build reproducible Python workflows for processing, visualization, and analysis, and partner with software engineers to automate methods across programs.
  • Support field campaigns and radar troubleshooting with field teams, including travel to deployment sites as needed.
  • Communicate findings through clear figures, technical reports, and reviews that inform operational decisions and future experiments.
  • Learn the radar systems, data workflows, and validation methods by working through a representative seeding event with the team.
  • Deliver a reproducible case study combining radar observations with operational records and explaining evidence, uncertainty, and alternative interpretations.
  • Implement and evaluate a prioritized improvement to quality control, precipitation estimation, or event analysis against an agreed baseline.
  • Propose the next set of analysis and observing improvements with clear measures of success.

Desired Qualifications

  • An MS or PhD with research focused on radar meteorology, precipitation estimation, or cloud microphysics.
  • Experience with cloud seeding research, orographic precipitation, snowfall retrievals, or attribution of small signals within natural variability.
  • Hands-on experience deploying, calibrating, or operating research radars and designing scan strategies.
  • Experience with tools such as Py-ART or xradar and data from research radars, NEXRAD, or MRMS.
  • Experience integrating radar with disdrometers, precipitation gauges, aircraft or UAS measurements, or numerical weather prediction.

About the Company

Rainmaker

Develops cloud-seeding systems to increase precipitation

Rainmaker builds cloud-seeding systems that pair weather software, radar sensing, and unmanned aircraft to increase precipitation and create more freshwater for farms, ecosystems, communities, and industry. The system combines atmospheric science with field deployments, using planning software, real-time sensing, and autonomous seeding operations to seed clouds and boost rainfall. It differentiates itself by integrating multiple technologies into a single workflow and by citing verified seeded precipitation in research near Homer, Alaska. Its goal is to lower the cost per acre-foot of incremental water and scale capabilities—called Weather Prime—to provide an alternative to desalination in basins like the Colorado River.

Company size
51-200
Company stage
Series B
Total funding
$131.3M
Headquarters
El Segundo, CA
Founded
2023

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