TY JOUR TI Wave climate in subarctic seas from Voluntary Observing Ships: 1900-2020 KW Subarctic seas KW visual wave observations KW wind sea and swell climatology KW long-term trends JO Russian Journal of Earth Sciences AU Grigorieva, V.. AU Gulev, S.K. PY 2020 IS 20 PB Geophysical Center of the Russian Academy of Sciences