Coalition for the Protection of Democracy (COPDEM) is a Political Action Group consisting of several individuals (home and abroad), support groups and organizations dedicated to defending democratic values, promoting good governance, and ensuring electoral integrity in Nigeria.

The Copernicus DEM is a Digital Surface Model (DSM) that represents the surface of the Earth including buildings, infrastructure and vegetation. The Copernicus DEM is provided in 3 different instances: EEA-10, GLO-30 and GLO-90. Data were acquired through the TanDEM-X mission between 2011 and 2015.

The Copernicus DEM is a Digital Surface Model (DSM) which represents the surface of the Earth including buildings, infrastructure and vegetation. This DSM is derived from an edited DSM named WorldDEM, where flattening of water bodies and consistent flow of rivers has been included.

2023年9月12日 · 哥白尼数字高程模型 (Copernicus DEM, COP-DEM)由欧洲航天局 (European Space Agency, 简称ESA或欧空局)发布，全球范围免费提供30米和90米分辨率DEM。 COP-DEM是数字表面模型 (DSM)，它表示地球表面 (包括建筑物、基础设施和植被)的高程。 COP-DEM是经过编辑的DSM，它来源于 WorldDEM 产品，编辑包括对水体和不合理地形的处理等 …

COPDEM is committed to promoting free and fair elections, protecting human rights, and strengthening democracy in Nigeria. Our mission is to raise awareness about the issues and challenges facing our electoral system and advocate for reforms that will ensure that every vote counts and that the voice of every Nigerian is heard.

The Coalition for the Protection of Democracy (COPDEM) is a dynamic and inclusive Political Action Group (PAG) formed by Nigerian citizens driven by the urgent need to enhance partisan politics and promote good governance in Nigeria.

2023年5月10日 · To this end, the Landsat Calibration and Validation Team (Cal/Val) compared the Copernicus DEM (CopDEM) to the DEM that is currently used in Collection-2 processing (called “Collection-2 DEM”).

2024年12月19日 · The Coalition for the Protection of Democracy (COPDEM) is a dynamic and inclusive Political Action Group (PAG) established by Nigerian citizens who recognize the urgent need to enhance partisan politics and promote good governance in Nigeria.

2021年10月3日 · Copernicus DEM: a new digital elevation model for the Copernicus programme. What is the Copernicus DEM? The Copernicus DEM is a Digital Surface Model (DSM) which represents the surface of the Earth including buildings, infrastructure and vegetation. This DEM is derived from an edited DSM named WorldDEM.

We provide two instances of Copernicus DEM named GLO-30 Public and GLO-90. GLO-90 provides worldwide coverage at 90 meters. GLO-30 Public provides limited worldwide coverage at 30 meters because a small subset of tiles covering specific countries are not yet released to the public by the Copernicus Program.