Dr. Masashi NIWANO   orcid

Senior Researcher
Meteorological Research Institute, Japan Meteorological Agency
1-1 Nagamine, Tsukuba, Ibaraki 305-0052, JAPAN

Guest Researcher
National Research Institute for Earth Science and Disaster Resilience

Guest Associate Professor
National Institute of Polar Research


Dr. Niwano is a specialist in the snow-atmosphere interaction in the cryosphere. He has ever performed in-situ meteorological and snow/ice measurements in Japan (e.g., Sapporo, Hokkaido) and the Greenland Ice Sheet (GrIS). He is also well versed in numerical modeling of the snow/ice-atmosphere interaction: The Snow Metamorphism and Albedo Process (SMAP) model, which is a detailed physical snowpack model, was developed by him and his colleagues (the SMAP model is the main outcome of his Doctor Thesis). Recently, he is interested in the GrIS climate system, and has stayed on the ice sheet for more than 100 days since 2012 to conduct field measurements on the atmosphere/snow/ice physical conditions. In 2018, he succeeded in coupling the SMAP model with the Japanese Meteorological Agency’s operational regional non-hydrostatic atmospheric model JMA-NHM and constructed the regional climate model NHM-SMAP. Using these original models by him, he has contributed to several international model inter-comparison projects including ESM-SnowMIP and GrSMBMIP, which will be dedicated for the IPCC reports.

Greenland, Greenland ice sheet, Antarctic ice sheet, ice sheet, seasonal snow, glaciology, meteorology, physical snow model, polar regional climate model, regional climate model, snow physics, ice sheet mass balance, surface mass balance, snow/ice surface energy balance, snow grain size, snow impurity