Global climate models (ESMs or GCMs) can provide climate information on scales of around 1000 by 1000 km (with grid resolution of 100's of km) covering what could be a vastly differing landscape (from very mountainous to flat coastal plains for example) with greatly varying potential for floods, droughts or other extreme events. (climateurope.eu)
Simulations of deep moist convection need to be run at grid resolutions finer than 2 kilometers to accurately predict the effects of climate change. (phys.org)
Data from various sources can be expressed as digital arrays of varying grid resolutions, which are defined in relation to one of three possible projections: Northern and Southern Hemisphere (Lambert's equal - area, azimuthal) and full global (cylindrical, equal - area); see Figure 1. (nsidc.org)