Surface mass balance along the K-transect in West Greenland, 1990-2011

A 21-year record is presented of surface mass balance measurements along the K-transect. The series covers the period 1990-2011. Data are available at 8 sites along a transect over an altitude range of 390 - 1850 meters (m) at approximately 67° North (N) in West Greenland. The surface mass balance gradient is on average 3.8 x 10^-3 m water equivalent/m, and the mean equilibrium line altitude is 1553 m above sea level (a.s.l). Only the lower 3 sites within 10 kilometers (km) of the margin experience a significant increasing trend in the ablation over the entire period. Reference: van de Wal, Roderik S W; Boot, W; Smeets, C J P Paul; Snellen, H; van den Broeke, Michiel R; Oerlemans, Johannes (2012): Surface mass balance along the K-transect in West Greenland. PANGAEA, https://doi.org/10.1594/PANGAEA.779181 Supplement to: van de Wal, RSW et al. (2012): Twenty-one years of mass balance observations along the K-transect, West-Greenland. Earth System Science Data, 4(1), 31-35, https://doi.org/10.5194/essd-4-31-2012

本数据集收录了沿K断面（K-transect）开展的21年地表质量平衡观测序列，观测时段覆盖1990年至2011年。该断面位于西格陵兰约北纬67°区域，沿线海拔区间为390米至1850米（m），共布设8个观测站点，各站点均有完整观测数据。地表质量平衡梯度的平均值为3.8×10^-3米水当量/米，平均平衡线海拔（equilibrium line altitude）为1553米（above sea level，简称a.s.l.）。仅距冰盖边缘10千米（km）范围内的下游3个观测站点，在整个观测时段内的消融量呈现出显著上升趋势。参考文献：van de Wal, Roderik S W; Boot, W; Smeets, C J P Paul; Snellen, H; van den Broeke, Michiel R; Oerlemans, Johannes (2012): 西格陵兰K断面地表质量平衡数据. PANGAEA数据库, https://doi.org/10.1594/PANGAEA.779181 补充资料来源：van de Wal, RSW等 (2012): 西格陵兰K断面21年质量平衡观测记录. 地球系统科学数据（Earth System Science Data）, 4(1), 31-35, https://doi.org/10.5194/essd-4-31-2012