Ligin Joseph

Wrote an article for The Conversation on this year’s extreme monsoon rainfall and its increasing trend.

It summarizes some of the major flooding events this year, explores their causes, and discusses the long-term trend in extreme monsoon precipitation over India.

- Moisture in the 2023 event was primarily sourced from regions near Madagascar and the western Indian Ocean, while 2013 had stronger inland contributions.
- The Bay of Bengal acted more as a vapor transport pathway than a direct moisture source.

Using a Lagrangian tracing model, we tracked the evaporative sources behind these floods and found that:

Interactions between subpolar and subtropical jet streams lead to extreme rainfall events over the North Indian Subcontinent in June 2013 and July 2023 - Climate Dynamics North Indian Subcontinent (NIS) is prone to disastrous and life-threatening floods during the summer monsoon period primarily due to its close proximity with the Himalayan foothills. Indian Meteorolog...

Our new study in Climate Dynamics reveals how interactions between the subpolar and subtropical jet streams played a critical role in triggering the extreme rainfall events over the North Indian Subcontinent in 2013 and 2023.

Read: link.springer.com/article/10.1...

Thank you! It covers 1982–2024, using 1991–2010 as the base period for the anomalies.

🌍 Global Sea Surface Temperatures (SST) are steadily rising 🌊.

This radial plot shows monthly SST anomalies averaged over 60°S–60°N. Each ring = a year, and segments = months, highlighting the growing intensity of positive SST anomalies due to climate change.

The 2024 Southwest Monsoon in India recorded 7.6% above the Long Period Average (LPA), marking an 'excess rainfall' year. This visualization shows monsoon trends over decades, revealing fluctuations influenced by ENSO and IOD phases.

Thanks to @lijodxl.bsky.social for insightful suggestions!