LS4P Phase II
International Kickoff Workshop

Dec 11, 2022 | Chicago, Ill, USA

Since the inception of the Global Energy and Water Exchanges (GEWEX) program initiative – the “Impact of Initialized Land Temperature and Snowpack on Sub-seasonal to Seasonal Prediction” (LS4P) in 2018, more than 40 institutions worldwide have participated in this project

Focusing more on the process understanding and predictability rather than the operational S2S prediction, the project goals in LS4P Phase I (2018–2022; LS4P-I) addressed two questions, :

  • What is the impact of the initialization of large scale LST/SUBT and snow pack, including the aerosol in snow, in climate models on the S2S prediction over different regions?
  • What is the relative role and uncertainties in these land processes versus in SST in S2S prediction? How do they synergistically enhance the S2S predictability?

Information on the LS4P-I achievements and publications can be found here


The GEWEX/LS4P Phase II International Kickoff Workshop will focus on:

  • LS4P-I achievements
  • items from LS4P-I which need to be addressed
  • challenging issues that the LS4P project faces
  • discussion of the LS4P Phase II protocol


LS4P Phase II Workshop Program


If you plan to attend the meeting in-person or on-line, please send an email to Yongkang Xue (


The GEWEX/LS4P Phase II International Kickoff Workshop will take place at the Marriott Marquis – History, level 2, Chicago, Ill, USA on 11 December from 09:30 – 18:00 CST.