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ESSIC Affinity Group

Data Assimilation and Numerical Modeling

Research Group Description:

The “Data Assimilation and Numerical Modeling” research group is a dynamic and interdisciplinary team of scientists and researchers dedicated to advancing the fields of data assimilation, numerical weather prediction (NWP), and hydrology. Our group operates at the intersection of meteorology, hydrology, computer science, and data science, with a primary goal of improving our understanding and prediction of atmospheric and hydrological processes.


Goals and Objectives:

    • Enhancing Weather Forecast Accuracy: Our foremost objective is to improve the accuracy of weather forecasts. We strive to leverage cutting-edge data assimilation techniques and NWP models to provide more reliable and precise weather predictions on various timescales, from short-term severe weather events to long-range climate patterns.
    • Advancing Hydrological Predictions: In addition to meteorology, we are committed to advancing hydrological predictions. Our research aims to develop and enhance models that can accurately simulate the movement of water through various components of the hydrological cycle, such as precipitation, runoff, groundwater, and streamflow, with a focus on flood forecasting, drought monitoring, and water resource management.
    • Data Assimilation Advancements: We continuously work to advance the science of data assimilation. Our group explores innovative methods for integrating observational data from various sources, such as satellites, weather stations, hydrological sensors, and remote sensing instruments, into numerical models to create a more complete and up-to-date representation of the atmosphere and hydrological systems.
    • Model Development and Improvement: We strive to develop and refine numerical models that encompass both meteorological and hydrological processes. These models aim to capture the complexities of the Earth’s atmosphere and water systems with higher resolution and improved physics, enabling us to better simulate and predict weather-related and hydrological phenomena.
    • Research into Climate Change and Hydrological Impacts: We investigate the impacts of climate change on weather patterns, hydrological cycles, and water resources. By incorporating climate projections into our models, we aim to provide valuable insights into the changing climate and its implications for water availability, flood risks, and drought occurrences.
    • Interdisciplinary Collaboration: We foster collaboration with experts in diverse fields, including meteorology, hydrology, computer science, statistics, and environmental science. Interdisciplinary teamwork allows us to develop innovative solutions, stay at the forefront of research, and address complex challenges in data assimilation, NWP modeling, and hydrology.
    • Education and Outreach: We are committed to knowledge dissemination and public outreach. Through workshops, seminars, and educational programs, we aim to share our expertise and findings with the broader community, including students, educators, policymakers, and the general public.
    • Applied Research: We actively engage with operational meteorological and hydrological agencies, industry partners, and government organizations to ensure that our research has practical applications. We seek to provide decision-makers with the tools and information needed to make informed choices related to weather, hydrology, and climate-related risks.
    • Continuous Innovation: We encourage a culture of innovation and exploration within our research group. By staying at the forefront of emerging technologies and methodologies, we aim to drive progress in data assimilation, NWP modeling, and hydrology, ultimately contributing to a more resilient and sustainable future.


In summary, the “Data Assimilation and Numerical Modeling” research group is dedicated to advancing the science and applications of data assimilation, numerical weather prediction, and hydrology. Our multifaceted approach encompasses research, education, collaboration, and innovation, with the ultimate goal of improving the accuracy and understanding of atmospheric and hydrological processes for the benefit of society.

Affinity Group Chair

Isaac Moradi smiles for the camera, wearing a red gridded button-up and a red tie

Isaac Moradi

Research Scientist

Research Interests:

1- Microwave Remote Sensing
2- Radiative Transfer Modelling
3- Satellite Data Assimilation
4- Atmospheric Physics
5- Artificial Intelligence and Machine Learning

Contact Info:


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