Greenland Summit Ice Cores

From 1989 to 1994, the U.S. and European scientific communities supported a bold undertaking to acquire an extensive paleoclimate record for the Northern Hemisphere. These efforts, termed the Greenland Ice Core Project (GRIP) and Greenland Ice Sheet Project Two (GISP2), acquired deep ice cores from sites on and near the Greenland summit. The GISP2 (US) site was located at 72 degrees 36 minutes N, 38 degrees 30 minutes W. The GRIP (European) site was located at 72 degrees 35 minutes N, 37 degrees 38 minutes W. A wide range of environmental and physical parameters were recorded from the cores. The data types are listed below: - Air Mass Trajectories (GISP2) - Chemistry (GISP2, GRIP) - Climatological Data (GISP2) - Cosmogenic Isotopes (GISP2) - Dust (GISP2) - Electrical Conductivity (GISP2, GRIP) - Gas Concentrations in Air Bubbles (GISP2, GRIP) - Physical Properties and Ice Core Stratigraphy (GISP2, GRIP) - Stable Isotopes (GISP2, GRIP) - Time scales (GISP2, GRIP) The GRIP and GISP2 data presented on this site were acquired as a part of a multi-institutional effort involving the GISP2 Science Management Office (SMO) at the University of New Hampshire, the National Snow and Ice Data Center (NSIDC) at the University of Colorado, the International Ice Core Data Cooperative (IICDC) at the Institute of Arctic and Alpine Research (INSTAAR), and the World Data Center (WDC) for Paleoclimatology, Boulder at the National Oceanic and Atmospheric Administration (NOAA) National Geophysical Data Center (NGDC). Documentation and data format were carried out jointly by NSIDC and the WDC for Paleoclimatology. All GISP2 and GRIP data are jointly archived at the Arctic System Science (ARCSS) data archive at NCAR and at the WDC for Paleoclimatology, NOAA-NGDC. The datafiles were extracted from a CD and are now in a single tar.gz file available for download. See the readme for important corrections to the data.

1989年至1994年间，欧美科学界启动了一项雄心勃勃的研究计划，旨在获取北半球范围广泛的古气候（paleoclimate）记录。该计划下的两项核心工作分别为格陵兰冰芯计划（Greenland Ice Core Project, GRIP）与格陵兰冰盖计划二号（Greenland Ice Sheet Project Two, GISP2），二者均从格陵兰冰盖峰顶及周边区域采集了深层冰芯。其中，GISP2（美方项目）的采样点位于北纬72°36′、西经38°30′；GRIP（欧方项目）的采样点位于北纬72°35′、西经37°38′。

研究团队从冰芯中记录了多类环境与物理参数，数据类型如下：
- 气团轨迹（GISP2）
- 化学成分（GISP2、GRIP）
- 气候学数据（GISP2）
- 宇宙成因同位素（GISP2）
- 粉尘（GISP2）
- 电导率（GISP2、GRIP）
- 气泡内气体浓度（GISP2、GRIP）
- 物理特性与冰芯地层学（GISP2、GRIP）
- 稳定同位素（GISP2、GRIP）
- 时间标尺（GISP2、GRIP）

本网站发布的GRIP与GISP2数据集，系多机构协作的成果，参与单位包括新罕布什尔大学的GISP2科学管理办公室（SMO）、科罗拉多大学的国家冰雪数据中心（NSIDC）、北极与高山研究所（INSTAAR）下属的国际冰芯数据合作组织（IICDC），以及美国国家海洋和大气管理局（NOAA）国家地球物理数据中心（NGDC）下设的博尔德古气候世界数据中心（WDC for Paleoclimatology）。

数据文档编制与格式规范由NSIDC与古气候世界数据中心联合完成。所有GISP2与GRIP数据分别存档于美国国家大气研究中心（NCAR）的北极系统科学（ARCSS）数据档案馆，以及NOAA-NGDC下属的古气候世界数据中心。

本次提供的数据集文件从光盘提取而来，现已打包为单个tar.gz格式文件供下载。请查阅readme文件以获取数据的重要修正说明。