Quasigeoid UTM32 100m

Quasigeoid heights (height anomalies) from model GCG2016/2023. The GCG2016 is the official height reference area for Germany. It is needed to convert between physical heights of the DHHN2016 (normal heights at the level of the Amsterdam level NAP, consistent with EVRS) and ellipsoidal heights from GNSS in the ETRS89 system. The spatial data set is the basis for the representation of the quasigeoid in the WMS Gravity. For this purpose, the original grid of the GCG2016/2023 was sampled with a grid resolution of 100 m in UTM32 projection. Documentation: https://sg.geodatenzentrum.de/web_public/gdz/dokumentation/enu/wms_schwere.pdf Data sources: http://sgx.geodatenzentrum.de/web_public/gdz/data sources/data sources_wms_schwere.pdf Reference frame 3D position: ETRS89/DREF91 realization 2016, epoch 2008.459 (ellipsoid heights identical to ETRF2000) Reference frame height: DHHN2016 (consistent with EVRS, normal heights in the level of Amsterdam) Unit: m Timeliness: 2016 (Baltic Sea: 2023)本数据集为源自GCG2016/2023模型的准大地水准面高（Quasigeoid heights，又称高程异常）。GCG2016是德国官方高程基准面，用于实现德国2016高程正常高系统（DHHN2016）与欧洲大地参考系统1989（ETRS89）中全球导航卫星系统（GNSS, Global Navigation Satellite System）获取的椭球高之间的转换；其中DHHN2016为与欧洲垂直参考系统（EVRS）一致、基于阿姆斯特丹基准面（NAP）的正常高系统。 该空间数据集是重力Web地图服务（WMS Gravity）中准大地水准面可视化的基础。为此，GCG2016/2023的原始格网已在UTM32投影下以100米的格网分辨率进行重采样。 文档：https://sg.geodatenzentrum.de/web_public/gdz/dokumentation/enu/wms_schwere.pdf 数据来源：http://sgx.geodatenzentrum.de/web_public/gdz/data sources/data sources_wms_schwere.pdf 三维位置参考框架：ETRS89/DREF91 2016实现版，历元2008.459（椭球高与ETRF2000一致） 高程参考框架：DHHN2016（与EVRS一致，基于阿姆斯特丹基准面的正常高） 单位：米（m） 时效性：2016年（波罗的海区域：2023年）