The staff of the International GEWEX Project Office sends its warmest wishes for a joyful holiday season and a wonderful new year to you and your family. Happy holidays!

• A new initiative studies land-atmosphere interactions in cold environments
• Aerosol-cloud interactions play a progressively larger role in modulating the occurrence and characteristics of heatwaves
• The Third Pole land surface and subsurface temperatures may have substantial remote predictive capabilities for subseasonal to seasonal precipitation
• The GLASS Panel reviews current projects and discusses potential land-atmosphere feedback observatories at its annual meeting