Meteorological, snow and soil data from Bylot Island, Canadian High Arctic, for driving and testing snow and land surface models

These data were obtained in an ice-wedge polygonal site in the Canadian high Arctic, in Qarlikturvik valley on Bylot Island at 73.15°N. The site is on herb tundra with no erect vegetation. One important intended use for these data is to drive and test snow physics models and land surface models under high Arctic conditions. Driving data are comprised of air temperature and relative and specific humidity, wind speed, short wave and long wave downwelling radiation, atmospheric pressure and precipitation. Validation data include time series of snow depth, shortwave upwelling radiation, surface temperature, snow temperature profiles, soil temperature and water content profiles, snow thermal conductivity at three heights and soil thermal conductivity at 10 cm depth. Field campaigns in mid-May provided vertical profiles of snow density and specific surface area in the polygon of interest and at other spots in the valley, named Wet0, TUNDRA, Pit3, PLaine 1&2 and Bombe, with coordinates in the associated ESSD paper. These data sets were first uploaded in February 2021 and included monitoring data from 11 July 2013 to 25 June 2019, i.e. 6 years of data. Field data were obtained in 2014, 2015, 2017, 2018 and 2019. Data files will be updated as more years of data become available.本数据集采集于加拿大高北极地区拜洛特岛（Bylot Island）卡尔利克图维克谷（Qarlikturvik valley）一处冰楔多边形样地，地理坐标为北纬73.15°。该样地地处无直立植被的草本苔原地带。本数据集的一项核心应用目标为在高北极环境下驱动并验证雪物理模型（snow physics models）与陆面模型（land surface models）。驱动数据集包含气温、相对湿度、比湿、风速、下行短波辐射、下行长波辐射、大气压强与降水数据。验证数据集涵盖雪深、上行短波辐射、地表温度、雪温廓线、土壤温度与土壤含水量廓线、三个高度的雪热导率以及10厘米深度处土壤热导率的时间序列数据。5月中旬开展的野外考察，获取了目标多边形样地及谷地内其余点位的雪密度与比表面积垂直廓线数据，这些点位分别为Wet0、TUNDRA、Pit3、PLaine 1&2与Bombe，其坐标信息详见关联的ESSD论文。本数据集首批数据于2021年2月上传，涵盖2013年7月11日至2019年6月25日共计6年的监测数据。野外实地数据采集工作分别于2014、2015、2017、2018及2019年完成。后续随着更多年份的监测数据产出，数据集文件将持续更新。