56 docs tagged with "WGClimate"

Processed data product geometrically referenced and minimally corrected to enable direct use without additional user processing.

Area (or volume) where concentration does not deviate from the station value by more than a specified range.

Data representing spacecraft orientation, pointing, calibration, alignment, Euler angles, quaternions, rates, biases, and associated accuracy parameters.

Data enhancing processing and utilization of main sensor data, collected via different processes or platforms, and usable as independent datasets.

A time series of measurements of sufficientlength, consistency, and continuity to determineclimate variability and change.

maximum interval through which a value of a quantity being measured can be changed in both directions without producing a detectable change in the corresponding indication.

measured quantity value, obtained by a given measurement procedure, for which the probability of falsely claiming the absence of a component is β, given a probability α of falsely claiming its pres...

A unified and coherent set of observations of a given parameter of the Earth system, which is optimized to meet specific requirements in addressing science questions.

Physical, chemical, or biological variable or group of linked variables critical to characterizing Earth’s climate and providing empirical evidence for climate understanding, prediction, and servic...

used as a fixed standard of reference for comparison or measurement (fiducial point).

index mark on a test system that allows automatic geometric identification and orientation detection of an object using imaging systems.

Independent measurements traceable to SI standards, produced with documented uncertainties to validate satellite data.

an area of the object space scanned by the field-of-view of a scanning sensor.

the solid angle from which the detector receives radiation.

the area of a target encircled by the field-of-view of a detector of radiation, or irradiated by an active system.

Long-term, stabilised record of calibrated sensor observations in physical units with quantified uncertainty and associated ancillary data.

Ability of a sensor system to distinguish signals from neighboring object structures.

linear distance between pixel centres on the ground.

Geophysical parameter data, measured or collected by other means than by the instrument itself, used as correlative or calibration/validation data for that instrument data.

Unlike harmonisation, homogenisation is where all satellites are forced to look the same such that when looking at the same location at the same time they would (in theory) give the same signal.

Housekeeping telemetry (HKTM) is all the telemetry necessary to monitor the health and status of the satellite and transmitted through the telemetry link.

(1) a direct measurement of the measurand in its original place (2) any sub-orbital measurement of the measurand.

Quantity value provided by a measuring instrument or a measuring system.

Hardware system that collects scientific or operational data, or a hardware-integrated collection of one or more sensors contributing data of one type to an investigation.

Determination of parameters describing instrument characteristics for generating calibrated and comparable physical values, varying by instrument, mode, and over time due to degradation.

Data specifically associated with the instrument, either because it was generated by the instrument or included in data packets identified with that instrument.

Continuous or incremental change over time in indication, due to changes in metrological properties of a measuring instrument.

Accurate determination of orbital distances between satellites with compatible orbits, required for SAR and differential interferometry applications.

Period between the end of sensing of a Phenomenon to the beginning of availability of a specific product.

Mission Specific period characterized by a set of parameters (e.g.

Computation of non-conflicting timelines for space payload activities and ground station reception, accounting for budgets, capacities, and station availabilities, including cross-mission conflict ...

Function ensuring nominal operation of ground segment resources and making activities visible and traceable through operator interaction for failure handling.

Path in space described by a satellite revolving around the Earth under mutual gravitational attraction.

Generation of attitude and state vectors to describe spacecraft position over time, computed either in advance (predicted) or after observation (restituted or precise).

Support carrying instrument(s) or sensor(s), such as a spacecraft, aircraft, or ground-based platform.

Closeness of coordinate value to the true or accepted value in a specified reference system.

Orbit model derived from all available satellite tracking data and dynamical corrections, achieving highest accuracy.

These state vectors are calculated (e.g.

Preliminary orbits are based on the fast delivery tracking data.

Raw Data The physical telemetry payload data as received from the satellite, i.e.

Electronic data package distributable to users; content is derived from instrument data via processing involving ancillary and auxiliary data.

Determination of radiometric instrument performance across spatial, spectral, and temporal domains by relating output to true radiometric values.

Time-ordered telemetry data from the instrument before any processing has been applied.

Conceptual framework of unifying concepts for understanding relationships among entities in an environment and developing consistent standards, particularly for archival systems preserving digital ...

### Notes.

Orbit determination using delayed telemetry data with a one-day latency, computed from a three-day moving window and typically sampled every 60 seconds with lower precision than precise orbits.

Physical transfer of data from a repository to the user.

Subset of instrument acquisition data segmented by time across the swath.

Quotient of the change in an indication of a measuring system and the corresponding change in a value of a quantity being measured. Note: sensitivity can depend on the value of the quantity being m...

Device or instrument suited (through physical/chemical interaction) to measure one or more properties of a Phenomenon and thus collect factual/objective data.

Long-term recording and trend analysis of parameters describing sensor quality and their level-0 outputs.

Method by which location or coverage is designated (e.g., latitude and longitude).

Area covered by spatial samples collected during a scan of a spaceborne instrument, determined by its incidence angle.

Automated transmission of payload data (science, engineering) from a platform to receiving equipment via telemetry link, excluding commands, tracking, memory transfers, audio, or video.

Data stream of measured values (instrument science, instrument engineering, and spacecraftor platform engineering data), not including command, tracking, computer memory transfer, audio or video si...

Process of assessing, by independent means, the quality of the data products derived from the system outputs.