NASA Goddard Space Flight Center, 8800 Greenbelt Rd., Greenbelt, MD, 20771, USA.
Earth System Science Interdisciplinary Center, University of Maryland, 5825 University Research Court Suite 4001, College Park, MD, 20740, USA.
Sci Data. 2023 Feb 4;10(1):73. doi: 10.1038/s41597-023-01987-6.
Since the early 2000s, sea ice has experienced an increased rate of decline in thickness, extent and age. This new regime, coined the 'New Arctic', is accompanied by a reshuffling of energy flows at the surface. Understanding of the magnitude and nature of this reshuffling and the feedbacks therein remains limited. A novel database is presented that combines satellite observations, model output, and reanalysis data with sea ice parcel drift tracks in a Lagrangian framework. This dataset consists of daily time series of sea ice parcel locations, sea ice and snow conditions, and atmospheric states, including remotely sensed surface energy budget terms. Additionally, flags indicate when sea ice parcels travel within cyclones, recording cyclone intensity and distance from the cyclone center. The quality of the ice parcel database was evaluated by comparison with sea ice mass balance buoys and correlations are high, which highlights the reliability of this database in capturing the seasonal changes and evolution of sea ice. This database has multiple applications for the scientific community; it can be used to study the processes that influence individual sea ice parcel time series, or to explore generalized summary statistics and trends across the Arctic.
自 21 世纪初以来，海冰的厚度、范围和年龄都经历了加速减少的过程。这种新的状态被称为“新北极”，伴随着地表能量流的重新分布。人们对这种重新分布及其反馈的程度和性质的了解仍然有限。本文提出了一个新的数据库，该数据库将卫星观测、模型输出和再分析数据与拉格朗日框架中的海冰包裹漂移轨迹相结合。该数据集包含海冰包裹位置、海冰和积雪状况以及大气状态的逐日时间序列，包括遥感地表能量收支项。此外，标志指示海冰包裹在气旋内移动的时间，记录气旋的强度和距离气旋中心的距离。通过与海冰质量平衡浮标进行比较，评估了冰包裹数据库的质量，相关性很高，这突出了该数据库在捕捉海冰季节性变化和演变方面的可靠性。该数据库对科学界有多种应用；它可以用于研究影响单个海冰包裹时间序列的过程，也可以用于探索北极的一般汇总统计数据和趋势。
