Study links Central Asia extreme rain to Southeast Asia drought
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A Rice University study published in Nature Geoscience finds that extreme precipitation in Central Asia and drought in mainland Southeast Asia are linked by large-scale climate patterns. The researchers used paleoclimate records and climate models to show that these opposing extremes have occurred concurrently for the past 2,000 years. The frequency of such events has increased significantly in recent times.
The Study
Researchers Na Wang and Sylvia Dee at Rice University analyzed paleoclimate records including tree rings, sediments, and ice sheets to reconstruct moisture patterns in Central Asia and mainland Southeast Asia over millennia. They also used climate model simulations to identify the physical pathways linking the two regions. The findings were published in Nature Geoscience.
Historical Link
The models revealed that concurrent drought in Southeast Asia and extreme precipitation in Central Asia have occurred for at least 2,000 years. This suggests that large-scale climate factors drive both extremes simultaneously, despite the geographical distance of over 4,000 kilometers. The study provides a long-term context for understanding current climate trends.
Recent Trends
When comparing current data with historical records, the team found that the frequency of these concurrent extremes has increased significantly in recent decades. This aligns with broader climate change patterns affecting water-related disasters across Asia. The authors emphasize that understanding these links can help communities build climate resilience.
What's Next
Further research is needed to determine how ongoing climate change will affect the frequency and intensity of these linked extremes. It remains unclear whether current adaptation strategies in Central Asia and Southeast Asia adequately account for this teleconnection.
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Study links Central Asia extreme rain to Southeast Asia drought
