Future requirements / Needs Sample Clauses

Future requirements / Needs. In-situ observations that are currently missing or with insufficient coverage are: Thermohaline circulation transport is measured by the RAPID array at 26 N; an additional array to the north is desired. Precipitation measurements at higher levels in mountainous areas (present observations are mostly in valleys). Data on rivers that have a completely dry season. CO2 and CH4 measurements. The Total Carbon Column Observing Network (TCCON) validation network: preferred additional measurements at complex (e.g. Sahara near large albedo gradients) and remote (e.g. Amazonia) regions. More flask measurements and AIRCORE profile measurements are desired. Measurements of temperature and precipitation in built-up urban environments.