Dr. Marika M. Holland is a Senior Scientist in the Climate and Global Dynamics Laboratory at the National Center for Atmospheric Research (NCAR). Her research interests are focused on the role of sea ice in the climate system, including long-term sea ice change, sea ice predictability, and polar climate variability. Dr. Holland has also been involved in collaborative work assessing the biological impacts of changing polar climate conditions. She has extensive experience in using coupled climate models to study climate variability and change and has been active in the development of improved sea ice models for climate simulations. Dr. Holland has served as co-chair for the Polar Climate Working Group of the Community Earth System Model and Chief Scientist for the Community Earth System Model project. She is a contributing author on the Intergovernmental Panel on Climate Change third, fourth, and fifth assessment reports, has contributed to numerous other national and international assessments on the changing Arctic and Antarctic climate, and is an author on over 90 peer-reviewed publications. Dr. Holland received her Ph.D. in Atmosphere and Ocean Sciences from the University of Colorado in 1997 and performed a Postdoctoral fellowship at the University of Victoria in British Columbia before joining the scientific staff of NCAR in 1999.