State of the Climate Monthly Overview - Global Snow & Ice

The State of the Climate is a collection of periodic summaries recapping climate-related occurrences on both a global and national scale. The State of the Climate Monthly Overview - Global Snow & Ice report provides a global view of snow and ice, placing the data into a historical perspective. Because the Northern Hemisphere has the vast majority of the planet's seasonal snow cover, the report focuses on the Northern Hemisphere snow cover extent. In addition to snow cover, sea ice extents in both hemispheres are included. Annual reports are available from 2002 with some monthly reports in 2005 and 2006. Regular monthly reports begin in 2007. Not all topics are covered in each report and level of detail varies.

《气候现状》是一系列周期性的综述，旨在回顾全球及国家层面上的气候相关事件。《气候现状月度概览——全球雪冰报告》提供了全球雪冰的全面视角，并将数据置于历史背景中进行考察。鉴于北半球拥有地球上大部分季节性积雪覆盖，该报告着重于北半球积雪覆盖范围的监测。除积雪覆盖外，还涵盖了两半球的海冰范围。自2002年起，年度报告陆续发布，部分月度报告则始于2005年和2006年。自2007年起，开始定期发布月度报告。并非每份报告都涵盖所有主题，且报告的详细程度亦有所不同。