From both climate change science and policy perspectives, it is necessary to integrate ground and satellite observations with models for a more accurate accounting of these three greenhouse gases in North America.
In order to determine true sea-level variations of a few millimeters per year, it is necessary to estimate the ground vertical movement to a high degree of accuracy.
For the design of earth-to-air heat exchangers, it is necessary to know the ground temperature at different depths.
Segmentation accuracy is usually computed by analysing noise mask output N with regard to ground truth (mask G) segmentation classification errors, i.e. it is necessary to have manual segmentation ground truth available.
Before the flight, it is necessary to perform measurements on ground test facility.
To understand the true damage mechanism of the bridges, it is necessary to estimate the strong ground motions at the bridge sites.
However, since the spatial and temporal resolutions of the satellite observation data are limited, it is necessary to analyze data from ground-based imager and magnetometer networks to study the spatiotemporal development of these auroral phenomena in more detail.
Because the water table is only a few feet beneath the surface, it is necessary to inter most people above ground -- everyone except the poor, who must rest in the muck.
To optimise design for face bolting in soft ground, it is necessary to understand the influences of each parameter associated with face bolting on ground response.
