Arjun Babu Nellikkattil

Arjun Babu Nellikkattil

he/him

I am a climate scientist passionate about developing advanced mathematical and machine learning tools to improve our understanding of the climate system and predict future changes. My current research focuses on refining climate risk assessments and informing policy decisions by providing precise, data-driven insights into future precipitation trends.

Atmospheric river detection under changing seasonality and mean‐state climate: ARTMIP tier 2 paleoclimate experiments

Published in Journal of Geophysical Research: Atmospheres, 2025

Atmospheric rivers (ARs) are important for moving moisture across the planet, but scientists don’t agree on a single way to define or detect them. This study compares different AR detection tools using climate model simulations of past climate conditions, including the early Holocene and the Last Glacial Maximum. The tools mostly agree on how ARs shift with seasonal changes, but show much more disagreement when the overall climate is different—like during low CO₂ periods. This highlights that the choice of detection method can significantly affect results, especially when studying past or future climates.

Recommended citation: Rush, William Davis, Juan Manuel Lora, C. B. Skinner, S. A. Menemenlis, Christine A. Shields, P. Ullrich, Travis Allen O’Brien et al. "Atmospheric river detection under changing seasonality and mean‐state climate: ARTMIP tier 2 paleoclimate experiments." Journal of Geophysical Research: Atmospheres 130, no. 1 (2025): e2024JD042222.
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