PeopleofSuperintelligence

Researcher

Bryce Harrop

Also known as Bryce E. Harrop

Bryce Harrop is an Earth Scientist at Pacific Northwest National Laboratory and leads E3SM's Water Cycle Changes and Impacts Group. He completed a PhD in 2016 on atmospheric cloud radiative effects and tropical convection, then contributed to E3SM's Atmosphere Group in May 2018. In 2022, he coauthored a study on calibration of E3SM's cloud parameterizations and subgrid effects. He coauthored the 2023 ClimSim dataset for hybrid physics-ML research and a 2024 machine-learning bias-correction study for E3SM. He coauthored 2025 research on North American heatwave and wildfire risks and a 2026 study on Arctic moisture intrusions.

Now at
Office of Science and Energy Exascale Earth System Model

Timeline

  1. 2016

    A PhD on tropical clouds

    He completes a PhD in 2016 with a dissertation on the nature of the atmospheric cloud radiative effect and its impact on tropical convection.

  2. May 2018

    Contributing to E3SM

    In May 2018, he is one of PNNL's primary contributors to the Atmosphere Group for the Energy Exascale Earth System Model (E3SM).

  3. 2022

    Calibrating E3SM cloud physics

    In 2022, he coauthors a study showing that better calibration of cloud parameterizations and subgrid effects increases the fidelity of the E3SM Atmosphere Model version 1.

  4. 2023

    ClimSim and a NeurIPS award

    He coauthors ClimSim, a multi-scale dataset for hybrid physics-ML research with 5.7 billion pairs of multivariate input and output vectors. The paper receives a 2023 NeurIPS Outstanding Paper award.

  5. 2024

    Machine-learning bias correction

    In 2024, he coauthors a paper on machine-learning bias correction of the large-scale environment of high-impact weather systems in the E3SM Atmosphere Model.

  6. 2025

    North America heatwave and wildfire risks

    In 2025, he coauthors a study showing how an eastward-shifting boreal summer intraseasonal oscillation amplifies North American heatwave and wildfire risks in a warming climate.

  7. 2026

    Arctic moisture intrusions

    In 2026, he coauthors a study on model-observation discrepancies in Arctic moisture intrusions and pathways for improved simulation.

  8. As of October 2026

    Earth Scientist and group lead

    As of October 2026, he is an Earth Scientist at Pacific Northwest National Laboratory and leads E3SM's Water Cycle Changes and Impacts Group in Phase 3.

Career

  1. NowOffice of ScienceEarth Scientist
  2. NowEnergy Exascale Earth System ModelGroup Lead

From the biography.

  1. The company share of AI researchers’ top papers was 31% in 2020–2024 and 8% in 1970–1974Includes United States Department of Energy. We estimate where the people shaping AI worked when their most-cited papers appeared: the company share was 31% in 2020–2024 and 8% in 1970–1974, and Google led all organizations in 2020–2024.
  2. Google had the most people shaping AI every year from 2014 to 2025Our estimates of which organizations employed the most people shaping AI each year from 1955 to 2025, tracing the shift from university labs to companies.
  3. The United States employs an estimated 48% of people shaping AIWe estimate where the people shaping AI work today, how universities, companies and research institutes split across countries, and how country shares have changed since the 1960s.
  4. 43% of living people shaping AI work outside their country of birthWe estimate that 43% of living people shaping AI work outside their country of birth (520 of 1,198 people with known birth and employment countries).

Sources and credits

Photo: We have no published photo of Bryce Harrop yet. Send us a free-licensed photo.

  1. Where are my (28) former Ph.D. students now? atmos.washington.edu. Checked 22 October 2026.
  2. PNNL Plays Important Role in Development of Powerful Earth System Model pnnl.gov. Checked 22 October 2026.
  3. Better calibration of cloud parameterizations and subgrid effects increases the fidelity of the E3SM Atmosphere Model version 1 gmd.copernicus.org. Checked 22 October 2026.
  4. ClimSim: A large multi-scale dataset for hybrid physics-ML climate emulation proceedings.neurips.cc. Checked 22 October 2026.
  5. NeurIPS 2023 Awards neurips.cc. Checked 22 October 2026.
  6. Bryce Harrop | PNNL pnnl.gov. Checked 22 October 2026.
  7. Eastward-shifting boreal summer intraseasonal oscillation amplifies North America heatwave and wildfire risks in warming climate nature.com. Checked 22 October 2026.
  8. Model-observation discrepancies in Arctic moisture intrusions: causes and pathways for improved simulation nature.com. Checked 22 October 2026.
  9. Leadership Team in Phase 3 - E3SM - Energy Exascale Earth System Model e3sm.org. Checked 22 October 2026.