'terrestrial observation' is correct and usable in written English.
You can use it when you want to refer to the observation of objects or phenomena on Earth. For example, "The research team used both aerial and terrestrial observation to study the impact of climate change on the region."
The GTOS infrastructure already builds on national, regional and global programs for terrestrial observations, but more emphasis is needed on the unique circumstances of coastal ecosystems.
The bulk of Sentinel-1A and 1B terrestrial observations are undertaken in interferometric wide-swath (IWS) mode, and provide 20 m resolution single (SP) or DP data [79].
Coastal GTOS will use the observing system philosophy and infrastructure to identify and improve access to data and information about coastal change; assist users to make that access systematically; ensure that appropriate measures are being or can be made; and integrate terrestrial observations with marine observations.
Because our knowledge of Mercury's geology has been based only on the 1975 Mariner flyby and terrestrial observations, it is the least understood of the terrestrial planets.
"In our view this storm deserves a scientific revisit as a grand challenge for the space weather community, as it provides space‐age terrestrial observations of what was likely a Carrington‐class storm," the authors said.
Global carbon observations is a fundamental requirement in the context of the Terrestrial Carbon Observation (TCO) theme within the Integrated Global Carbon Observation IGCOO) theme of Integrated Global Observation Strategy Partners (IGOS-P), for quantitative estimation of key biophysical parameters such as net primary productivity (NPP), carbon stocks and their changes in time.
This paper describes the preliminary study on the applicability and improvement of data sets from PALSAR on ALOS and GLI on ADEOS-11 for terrestrial carbon observation.
Also, terrestrial solar observations have been supplemented by observations from space.
Moreover, recent gravity measurements also provide 623 discrete terrestrial gravity observations.
Various data sources, such as the Turkish Digital Elevation Model with 3 ×3" resolution (TRDEM3), a recently published satellite-only global geopotential model and terrestrial gravity observations are combined in the gravimetric geoid models of the KCB by applying the KTH and RCR techniques, separately.
