"Quarterly review of hydrometeorological processes in the Arctic Ocean" is issued by the AARI and contains description of the meteorological, ice and hydrological processes in the Arctic Ocean and its seas for the last complete quarter of 2021. The factual information for the review is obtained from the ground observational network, satellites, national expeditionary research and observations at the AARI scientific observatory "Cape Baranova". Review is available in PDF format.