Gap-filled meteorological data and surface energy balance at nine Greenland Climate Network (GC-Net) stations over 1998-2017

This dataset contains the hourly gap-filled meteorological data at nine GC-Net stations: CP1, Dye-2, NASA-SE, Saddle, South Dome, NASA-E, NASA-U, Summit, Tunu-N for the period 1998-2017. Meteorological variables include: adjusted snow fall rate from surface height sounder air temperature at 2 meter (m) height, relative humidity at 2 m hieight, wind speed at 10 m height. The dataset also comprises surface energy budget components: upward and doward shortwave and longwave radiative fluxes, sensible and latent heat fluxes (and subsequently sublimation/deposition), conductive heat flux into the subsurface, surface temperature and surface melt. These data were prepared for, and fully described in Vandecrux et al. (2020, https://doi.org/10.1017/jog.2020.30). For their calculation, raw data from the GC-Net stations (available at http://cires1.colorado.edu/steffen/gcnet/) were filtered from erroneous measurements and gap-filled using either nearby automatic weather stations or from adjusted RACMO2.3p2 regional climate model output. Downward longwave radiation is not monitored by the GC-Net stations and is therefore directly taken from RACMO2.3p2. Upward shortwave radiation was gap-filled using gap-filled downward shortwave radiation and daily MODIS albedo. The surface energy budget calculation uses the Monin-Obhukov similarity theory accounting for the near-surface atmosphere stratification.

本数据集涵盖1998年至2017年间，9个GC-Net站点（CP1、Dye-2、NASA-SE、Saddle、South Dome、NASA-E、NASA-U、Summit、Tunu-N）的逐小时间隙填充气象数据。气象变量包括：由2米高度的地面高度探测器气温校正得到的降雪率、2米高度相对湿度、10米高度风速。本数据集还包含地表能量收支组分：向上与向下短波辐射通量、向上与向下长波辐射通量、感热通量与潜热通量（及其衍生的升华/沉积过程）、地下传导热通量、地表温度与地表融雪量。该数据集的制备与完整说明参见Vandecrux等人2020年的研究（https://doi.org/10.1017/jog.2020.30）。在数据计算过程中，研究人员首先对GC-Net站点的原始数据（可从http://cires1.colorado.edu/steffen/gcnet/获取）剔除错误观测值，并通过邻近自动气象站数据或校正后的RACMO2.3p2区域气候模式输出完成间隙填充。GC-Net站点未监测向下长波辐射，因此该数据直接取自RACMO2.3p2的输出结果。向上短波辐射则通过间隙填充后的向下短波辐射与每日MODIS反照率数据完成间隙填充。地表能量收支计算采用考虑近地层大气层结的莫宁-奥布霍夫相似性理论（Monin-Obhukov similarity theory）。