Sorry, you need to enable JavaScript to visit this website.

4th Asia2k Workshop

Kyoto, Kyoto, Japan
Workshop report
Contact person
Takeshi Nakatsuka
E-Mail address
Working groups
Meeting Category

Asia2kThis workshop is part of the PAGES 2k Network's Phase 2 activities, and follows the 3rd Asia 2k workshop held from 26-27 May 2014 in Beijing, China, which aimed to integrate paleoclimate, especially hydroclimate, data during the last 2 millennia in Asia using appropriate statistical models.

In Asia, it is very important to understand the historical variability of hydroclimate, including occurrences of severe droughts and floods, for local people’s welfare and there are many promising proxies such as tree rings, stalagmites, their isotope ratios and documentary records. However, hydroclimate field reconstruction (HFR) is a big challenge due to the heterogeneous nature of precipitation in contrast to temperature. There are still large gaps between available data distributions and current statistical models. Thus, we must seek ways to overcome the gaps by adding new data sets in Asia and/or focusing more realistic targets of HFR rather than precipitation such as moisture distribution or soil water contents.

In this workshop, preliminary multiproxy based temperature FR as well as HFR over Asia using different statistical methods will be presented based on available data sets (mainly collected during Asia2k's Phase 1) to obtain an up-to-date overview of 2k-Climate FR in Asia. Then, we will discuss gaps in the current data and models, and clarify ways to fill the gaps as we move towards a realistic and effective 2k-CFR in Asia by 2016.

Participants at the workshop will be expected to prepare their contributions to the Asia 2k project, e.g. by submitting their data to the Asia 2k database, by conducting preliminary climate reconstructions with different statistical methods, or by comaring model simulations with available data. Based on that, the workshop will then work towards finalizing the Asia 2k products.

Learn more about the Asia2k working group here.


We invite all scientists interested in actively contributing to the Asia2k goals by sharing results and data, by compiling and analyzing data, and by generating synthesis products to apply for participation.

Please fill in this application form and email to Masaki SANO (
by 1 December, 2014.


RIHN (Research Institute for Humanity and Nature), Kyoto, Japan

For more information

Contact Takeshi Nakatsuka (


Post-meeting material

Asia2k- 4thworkshop-740px


Group Photo: Download here.

Program: Download the program here.

Summary notes: Day 1, Day 2


Takeshi Nakatsuka, Opening Remarks
Lucien von Gunten, The PAGES 2k Network Phase 2
Xuemei Shao, Purpose of this workshop
Edward Cook, The Monsoon Asia Drought Atlas-Version 2
Huan Zhang, Long-term memory in tree-ring proxies and its influences on climate reconstructions
Jianghao Wang, Asia 2k in a broader context: a comparison between regional and global surface temperature reconstructions
Feng Shi, Tree-ring reconstruction of the South Asian summer monsoon index over the past millennium
Philipp Munz, Decadal-scale record of Indian Ocean winter monsoon intensity over the past two millennia
Min-Te Chen, A new window for probing tropical ocean climate during LIA and MWP: Mud drift sediments in the East China Sea
Hodaka Kawahata, Alkenone SST and atmospheric temperature during the last 3000 years in western Japan
Naveen Ghandi, Past rainfall reconstruction using speleothem from Nakarallu cave, Kadapa, Andhra Pradesh, India
Junpei Hirano, Japanese Early Modern documentary-based paleoclimate reconstruction
Kei Yoshimura, Data assimilation GCM to incorporate diary weather records in Early Modern Japan
Zhixin Hao, High-resolution temperature reconstruction from historical documents over China
Poorna Yahampath, Palaeo-climate change recordings of Sri Lanka in lasttwo millennia with reference to key historical records
Muhammad Wahab, Hydrological signals in tree-ring width chronologies of pine tree species in northern Pakistan
Binod Dawadi, Pre-monsoon precipitation signal in tree rings of timberline Betula utilis in the Central Himalayas
Udya Kumar Thapa, Spring temperatures in the far-western Nepal Himalaya since A.D. 1640 reconstructed from Picea smithiana tree-ring widths
Narayan Prasad Gaire, Premonsoon climate reconstruction using ring width chronologies of conifer species from the western Nepal Himalaya
Shreyas Managave, Oxygen isotopic composition of teak from Peninsular India
Olga Solomina, Glaciers fluctuations in Asia in the last 2ka