ASCAT-ERA5 and ASCAT-MERRA-2 Antarctic Peninsula Daily Surface Meltwater Production (2007-2022)

Estimates of daily surface meltwater production across the Antarctic Peninsula over 2007-2022. These data were generated using a random forest model combining enhanced resolution ASCAT C-Band radar backscatter, ASCAT-detected surface melt presence (https://zenodo.org/record/7995998), and ERA5 or MERRA-2 reanalysis sensible and latent heat fluxes, downward shortwave and longwave radiation, and 2-m temperature. Initial model training was undertaken using meteorological observations and surface melt estimates from surface energy balance modeling at several Larsen C automated weather stations (Jakobs et al., 2020), before scaling up to the Antarctic Peninsula region using ERA5 or MERRA-2. This record will be updated upon publication of a forthcoming manuscript. Please reach out to Luke Trusel with questions!本数据集为2007年至2022年南极半岛逐日地表融水产量估算结果。该数据集基于随机森林模型（random forest model）生成，融合了增强分辨率ASCAT C波段雷达后向散射数据、ASCAT反演的地表融水存在情况（https://zenodo.org/record/7995998），以及ERA5或MERRA-2再分析资料中的感热通量、潜热通量、下行短波辐射、下行长波辐射与2米气温数据。模型初始训练阶段，采用了拉森C（Larsen C）区域多座自动气象站的气象观测数据与地表能量平衡模型得到的地表融水估算结果（Jakobs等，2020），随后借助ERA5或MERRA-2再分析数据将模型尺度推广至南极半岛全域。 本数据集记录将在后续正式稿件发表后进行更新。 如有疑问，请联系Luke Trusel！