Arctic 2k v1.1.1

These data are well described in the Nature Scientific Data data descriptor: "An extended Arctic proxy temperature database for the past 2,000 years". ***Version 1.1.1 update**** Within the zip file are the v1.1.1 files, as well as three excel tables. 1) MetadataTablev1.1.1.xlsx Which lists the site information and metadata for each site as in table 1 of the Scientific Data articles 2) Revisions_v1.1.1.xlsx Which lists and describes the changes between versions 3) Reconstruction_Arc2kv1.1.1.xlsx Which includes the data for the annual, 30-year and 100-year mean Arctic temperature reconstruction based on the v1.1.1 data.