Paleoenvironmental Dynamics and Climate Variability in East Asia

Paleoenvironmental studies in East Asia have revealed a complex interplay between monsoonal systems, teleconnected ocean–atmosphere processes and regional anthropogenic responses over the Late Quaternary. High-resolution proxy records from lake sediments, speleothems and peatlands document multi-centennial to millennial oscillations driven by variations in solar insolation, Atlantic meridional overturning circulation and Pacific sea surface temperatures. These drivers have influenced forest composition, fire regimes and hydrological balance across diverse settings from coastal Korea to the Tibetan Plateau. Human societies have repeatedly adapted to abrupt cooling and drying events, with cultural transformations closely aligned to fluctuations in monsoon intensity and extreme hydrological episodes. Together, these findings underscore the global significance of East Asia as both a receptor and amplifier of climate variability and highlight its role in testing models of past and future environmental change.

Research from Nature Portfolio

Recent multi-proxy work from an isolated crater on Jeju Island has provided one of the densest mid-to-late Holocene hydroclimate records in coastal East Asia. The record links shifts in sea surface temperatures of the western tropical Pacific and low‐frequency solar variations to recurring societal disruptions on the Korean peninsula, including known cooling events at 2.8 ka and the Late Antique Little Ice Age. A decadal-resolution pollen sequence from a maar lake in Northeast China has demonstrated synchronous ~500-year oscillations in monsoon strength and prehistoric human activity, emphasising a persistent quasi-periodicity tied to broader El Niño–Southern Oscillation variability. Complementary high-resolution pollen, magnetic susceptibility and grain-size data from a Korean island have for the first time resolved the 8.2 ka cooling event in coastal East Asia, revealing rapid vegetation shifts driven by changes in the Atlantic overturning circulation and teleconnections with Greenland.

Paleoenvironmental Dynamics and Climate Variability in East Asia publication trend

The graph below shows the total number of articles in paleoenvironmental dynamics and climate variability in east asia across all publications each year (not limited to Nature Index journals).

Technical terms

Speleothem: Mineral deposits, such as stalagmites, formed in caves whose isotopic composition records past temperature and precipitation.

Multi-proxy record: An integrated dataset combining multiple palaeoclimate indicators (e.g. isotopes, pollen, geochemistry) to improve reconstruction reliability.

Pollen proxy: Fossil pollen assemblages in sediments used to infer past vegetation dynamics and, by extension, climate conditions.

δ¹⁸O (delta-O-18): The ratio of heavy to light oxygen isotopes in a sample, widely employed to reconstruct past temperature and hydrological changes.

Monsoon: A seasonal reversal of winds bringing distinct wet and dry periods, particularly influential in East Asian climate variability.

El Niño–Southern Oscillation (ENSO): A coupled ocean–atmosphere climate phenomenon in the tropical Pacific that modulates global weather patterns on interannual timescales.

References

1. Mid-to-late Holocene climate variability in coastal East Asia and its impact on ancient Korean societies. Scientific Reports (2023).
2. Synchronous 500-year oscillations of monsoon climate and human activity in Northeast Asia. Nature Communications (2019).
3. The 8.2 ka cooling event in coastal East Asia: High-resolution pollen evidence from southwestern Korea. Scientific Reports (2018).
4. 550‐Year Climate Periodicity in the Yunnan‐Guizhou Plateau During the Late Mid‐Holocene: Insights and Implications. Geophysical Research Letters (2023).
5. Vegetation and Climate Change during the Last Deglaciation in the Great Khingan Mountain, Northeastern China. PLOS ONE (2016).
6. China's historical record when searching for tropical cyclones corresponding to Intertropical Convergence Zone (ITCZ) shifts over the past 2 kyr. Climate of the Past (2019).