GIS HUB

Perhaps one of the most difficult information to obtain is  climate mapping  based on values ​​of temperature, precipitation or humidity.  Usually, this little information is found in raster format or in simple data tables.  And although the information may be scarce on the Internet, there are places to obtain this type of data.  Let's see where we can download climate cartography. Worldwide we find some places to download climate cartography.  WorldClim  is a possible resource where you can download climatic data in Raster format of 19 climatic variables worldwide and at different resolution levels.  It provides  climate information under three potential scenarios: present, past and future, being able to use this latest information (CMIP5 model) for future modeling projects in the face of climate change. The  Global Climate Monitor  is also another option that we can use to obtain climate information.  From this interesting pl...

When one is a beginner and gets into the world of the exploitation of Digital Terrain Models, or DTM, the first doubts and confusions assail about what is a slope map, a shadow map, a Digital Elevation Model and an image visualized in 3D.  Do we see the differences between them to understand each other? Digital  elevation  models,  or DEMs, allow altitude values ​​to be represented by pixels (when we are using GRID files).  Each pixel shows an altitude value, and, with the help of cartographic software, we can visualize the complete model in 3D noting the morphology of the terrain.  Once we represent the model in a three-  dimensional environment   we will be able to visualize the geography noting the slopes, valleys, valleys, mountains or any geographical feature of the territory thanks to the sensation of depth.  These models only represent altitude values, concepts such as depth, slope orientation or shadows are determined by the position ...