Here you can find a pointer to the main concepts and ontologies in the Linked Earth specification.
The Linked Earth specification is divided in several documents to facilitate its navigation.
The following table contains the pointers to the Linked Earth ontologies:
Ontology | Serialization | License | Language | Description |
---|---|---|---|---|
The Linked Earth Core Ontology | TURTLE | BY-NC-SA/2.0 | en | The Linked Earth Core Ontology aims to provide a common vocabulary for annotating paleoclimatology data |
The Proxy Archive Ontology | TURTLE | BY-NC-SA/2.0 | en | The Proxy Archive Ontology defines different types of proxy archives that we can find in a paleo climate dataset. |
The Proxy Observation Ontology | TURTLE | BY-NC-SA/2.0 | en | The Proxy Observation Ontology defines different types of proxy observations that we can find in a paleo climate dataset. |
The Proxy Sensor Ontology | TURTLE | BY-NC-SA/2.0 | en | The Proxy Sensor Ontology defines different types of proxy sensors that we can find in a paleo climate dataset. |
Alternatively, you can access programatically with the following commands:
curl -sH "Accept: text/turtle" -L http://linked.earth/ontology#
curl -sH "Accept: application/rdf+xml" -L http://linked.earth/ontology#
Here you can find a list of the main concepts and relationships in the Linked Earth Documents, sorted in alphabetical order.
A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | R | S | T | U | V | W | X | Z
Defined in: The Proxy Observation Ontology
Defined in: The Proxy Observation Ontology
Defined in: The Proxy Sensor Ontology
Defined in: The Proxy Observation Ontology
Author of the resource
Defined in: The Linked Earth Core Ontology
Defined in: The Proxy Observation Ontology
Defined in: The Proxy Observation Ontology
Defined in: The Proxy Sensor Ontology
Book in which the publication was published
Defined in: The Linked Earth Core Ontology
Defined in: The Proxy Observation Ontology
Property that indicates how the measured variable was calibrated
Defined in: The Linked Earth Core Ontology
How was the variable calibrated to represent climate or chronology?
Defined in: The Linked Earth Core Ontology
Metadata about how the variable was calibrated to reflect an environmental variable
Defined in: The Linked Earth Core Ontology
The publication that describes the calibration. The string should follow the model set in the publication class
Defined in: The Linked Earth Core Ontology
Defined in: The Proxy Observation Ontology
Defined in: The Proxy Sensor Ontology
The Data pertaining to chronological information
Defined in: The Linked Earth Core Ontology
DataTable containing the Chronology Variables
Defined in: The Linked Earth Core Ontology
Model used to obtain the chronology
Defined in: The Linked Earth Core Ontology
How was the chron data modeled?
Defined in: The Linked Earth Core Ontology
The data and metadata associated with how the chronology information was obtained.
Defined in: The Linked Earth Core Ontology
Sentence indicating how a paper should be published
Defined in: The Linked Earth Core Ontology
Defined in: The Proxy Observation Ontology
A suite of metadata that describe how a variable is interpreted to reflect past environmental variability
Defined in: The Linked Earth Core Ontology
Climate observations prior to the instrumental era are necessarily indirect. These observations are made on climate proxies in various geological (e.g. lake or marine sediments, living or fossil coral reefs, cave deposits), glaciological (ice cores or snow pits) or biological (trees) archives. Many types of measurements can be made on each archives, each sensing a different aspect of the environment (sometimes, several aspects at once). A paleoclimate dataset is a set of observations made on an archive.
Defined in: The Linked Earth Core Ontology
Defined in: The Proxy Sensor Ontology
Where was the data in the dataset collected from? Generally, this is the site where the archive was collected.
Defined in: The Linked Earth Core Ontology
Defined in: The Proxy Observation Ontology
Defined in: The Proxy Observation Ontology
Contributor of the resource (dataset, publication, etc.)
Defined in: The Linked Earth Core Ontology
Defined in: The Proxy Archive Ontology
Defined in: The Proxy Observation Ontology
Defined in: The Proxy Observation Ontology
Defined in: The Proxy Observation Ontology
Defined in: The Proxy Observation Ontology
Defined in: The Proxy Observation Ontology
An aggregation of DataTables and supporting information regarging the paleoenvironmental and/or chronological interpretation
Defined in: The Linked Earth Core Ontology
A structured collection of related information, including - but not limited to - geographical, chronological, and measured or modeled paleoenvironmental data
Defined in: The Linked Earth Core Ontology
Date when the dataset was published.
Defined in: The Linked Earth Core Ontology
The version of the dataset. It should follow the x.y.z notation where x refers to changes in metadata and data following a publication (for instance, the creation of a new age model using a different code), y refers to changes to the data following a publication (for instance, adding data further back in time without changing the model underlying the interpretation), and z refers to changes not associated with a publication (for instance, typos).
Defined in: The Linked Earth Core Ontology
A set of Variables organized in columns
Defined in: The Linked Earth Core Ontology
Defined in: The Proxy Observation Ontology
Defined in: The Proxy Observation Ontology
The description of a resource. This property may be used to provide further details on instrument descriptions, uncertainty description,etc.
Defined in: The Linked Earth Core Ontology
Answers the "of what" question for a Variable.
Defined in: The Linked Earth Core Ontology
Defined in: The Proxy Observation Ontology
Defined in: The Proxy Observation Ontology
Table that contains the probability on the inferred variables
Defined in: The Linked Earth Core Ontology
Defined in: The Proxy Archive Ontology
email of an author or contributor
Defined in: The Linked Earth Core Ontology
Table containing possible series of age models or proxy variability
Defined in: The Linked Earth Core Ontology
The mathematical statement used to describe the model.
Defined in: The Linked Earth Core Ontology
Defined in: The Proxy Observation Ontology
Defined in: The Proxy Observation Ontology
Defined in: The Proxy Observation Ontology
Defined in: The Proxy Observation Ontology
Because of their population size, foraminifera produce a significant amount of oceanic carbonate, making them a valuable source of paleoceanographic information. The following parameters are used in paleoceanographic applications: * Faunal Assemblage * Geochemical measurements: * Isotopes * Stable oxygen isotopes * Stable carbon isotopes * Radiocarbon * Trace Elements
Defined in: The Proxy Sensor Ontology
Property that indicates that a variable or data is found in a distribution table
Defined in: The Linked Earth Core Ontology
Property that indicates that the data or variable described was found in an ensemble table
Defined in: The Linked Earth Core Ontology
Property that indicates that a variable was found in a measurement table
Defined in: The Linked Earth Core Ontology
Property that indicates that the describer data or variable was found in a summary table
Defined in: The Linked Earth Core Ontology
Property that indicated the table where the described data can be found
Defined in: The Linked Earth Core Ontology
Property that indicated the funding which made the dataset possible
Defined in: The Linked Earth Core Ontology
A source of funding for the creation of the Dataset
Defined in: The Linked Earth Core Ontology
The agency that funded the development of the Dataset
Defined in: The Linked Earth Core Ontology
Country which awarded the funding for the dataset
Defined in: The Linked Earth Core Ontology
Defined in: The Proxy Sensor Ontology
Defined in: The Proxy Archive Ontology
Defined in: The Proxy Observation Ontology
The grant number associated with the development of the Dataset?
Defined in: The Linked Earth Core Ontology
What is the mathematical formulation that describes the Model?
Defined in: The Linked Earth Core Ontology
The table column number associated to a variable
Defined in: The Linked Earth Core Ontology
As Digital Object Identifier for a given resource. For example: "oi:10.1191/095968301673881493"
Defined in: The Linked Earth Core Ontology
The execution command needed to run the script or software
Defined in: The Linked Earth Core Ontology
Execution environment of the code
Defined in: The Linked Earth Core Ontology
Name of the CSV file containing the data table
Defined in: The Linked Earth Core Ontology
ID for a variable in a table
Defined in: The Linked Earth Core Ontology
Identifier used commonly to refer to publications.
Defined in: The Linked Earth Core Ontology
8-digit code used to udentify publications
Defined in: The Linked Earth Core Ontology
A downloadable link of a resource
Defined in: The Linked Earth Core Ontology
Indicates how the missing values are flagged in a dataset
Defined in: The Linked Earth Core Ontology
Archive associated with the proxy system
Defined in: The Linked Earth Core Ontology
Property that links to the proxy archive model included in the proxy system model
Defined in: The Linked Earth Core Ontology
Type of proxy observation associtated with the proxy system (e.g, Mg/Ca)
Defined in: The Linked Earth Core Ontology
Property that links to the proxy observation model included in the proxy system model
Defined in: The Linked Earth Core Ontology
Sensor associated with the proxy system
Defined in: The Linked Earth Core Ontology
Property that links to the proxy sensor model included in the proxy system model
Defined in: The Linked Earth Core Ontology
Proxy system associated to the measured variable
Defined in: The Linked Earth Core Ontology
Describes the importance of the ClimateInterpretation. For instance, d18Ocalcite is influenced by both temperature and d18Osw. If temperature is the dominant influence, then its rank is 1.
Defined in: The Linked Earth Core Ontology
What is the Resolution of the Archive?
Defined in: The Linked Earth Core Ontology
What is the Uncertainty associated with the Observations, Model, and Calibration?
Defined in: The Linked Earth Core Ontology
units in which a resource is measured The resource can be a Variable, an Observation, a Resolution, or an Uncertainty
Defined in: The Linked Earth Core Ontology
A column of values for the variable. The literal can be in the form of a vector of values (for instance d18O PaleoObservations), a vector of strings (for instance different paleoArchiveNames), a matrix or both
Defined in: The Linked Earth Core Ontology
Defined in: The Proxy Observation Ontology
Defined in: The Proxy Archive Ontology
Defined in: The Proxy Sensor Ontology
Pointer to the chron data included in the dataset
Defined in: The Linked Earth Core Ontology
What are the paleoenvironmental and chronological Data included in the Dataset?
Defined in: The Linked Earth Core Ontology
The paleo data included as part of a dataset
Defined in: The Linked Earth Core Ontology
What are the Variables included in the DataTable?
Defined in: The Linked Earth Core Ontology
From which measured variable is the current inferred variable obtained?
Defined in: The Linked Earth Core Ontology
Is the variable inferred from a measured variable?
Defined in: The Linked Earth Core Ontology
An inorganic sensor. Examples of inorganic sensors include: karst, snow, watershed, ice sheet, etc.
Defined in: The Linked Earth Core Ontology
A tool or implement used to produce MeasuredVariables
Defined in: The Linked Earth Core Ontology
The integration time of the Archive or the Sensor
Defined in: The Linked Earth Core Ontology
A suite of metadata that describe how a variable is interpreted to reflect past variability, including environmental variability
Defined in: The Linked Earth Core Ontology
Describes whether the interpreted environmental variable increases (positive) or decreases (negative) as the paleoDataVariableValue increases. The literal is a string , either "positive" or "negative"
Defined in: The Linked Earth Core Ontology
Describes the basis by which the proxy variable is interpreted in terms of climate.
Defined in: The Linked Earth Core Ontology
how is the variable interpreted?
Defined in: The Linked Earth Core Ontology
Whether the influence on the MeasuredVariable (and therefore the Interpretation) is local or far-field. The literal is a string.
Defined in: The Linked Earth Core Ontology
Defined in: The Proxy Observation Ontology
A suite of metadata that describe how a MeasuredVariable with instance Isotope is interpreted to reflect past variability, including environmental variability
Defined in: The Linked Earth Core Ontology
The issue number for the publication
Defined in: The Linked Earth Core Ontology
Property that indicated the journal in which the publication has been published
Defined in: The Linked Earth Core Ontology
Defined in: The Proxy Sensor Ontology
Defined in: The Proxy Archive Ontology
Defined in: The Proxy Observation Ontology
Defined in: The Proxy Observation Ontology
Defined in: The Proxy Observation Ontology
Defined in: The Proxy Observation Ontology
The geographic data and metadata for the dataset
Defined in: The Linked Earth Core Ontology
Defined in: The Proxy Observation Ontology
Defined in: The Proxy Observation Ontology
Defined in: The Proxy Observation Ontology
Defined in: The Proxy Archive Ontology
What Instrument was used to obtain the MeasuredVariables and Observations?
Defined in: The Linked Earth Core Ontology
On what Archive were the Observations measured on?
Defined in: The Linked Earth Core Ontology
A measured variable represents the values of a column in a data table. Measured variables are ssn:Observations. Measured variable observe Proxy Observation properties
Defined in: The Linked Earth Core Ontology
Table that contains the measuredVariables made on the Archive
Defined in: The Linked Earth Core Ontology
Method used to obtain the information from the resource
Defined in: The Linked Earth Core Ontology
Defined in: The Proxy Observation Ontology
Defined in: The Proxy Observation Ontology
Defined in: The Proxy Observation Ontology
Any system that is at least partially isomorphic to some target system and used to derive information about the structure and/or dynamics of the target system.
Defined in: The Linked Earth Core Ontology
How was the process modeled?
Defined in: The Linked Earth Core Ontology
The publication that describes the model.
Defined in: The Linked Earth Core Ontology
Defined in: The Proxy Observation Ontology
Defined in: The Proxy Sensor Ontology
Defined in: The Proxy Archive Ontology
Defined in: The Proxy Observation Ontology
Name of the described resource
Defined in: The Linked Earth Core Ontology
Defined in: The Proxy Observation Ontology
A publication that has not undergone a formal review process; for instance, a Dataset attached to a dissertation.
Defined in: The Linked Earth Core Ontology
Notes regarding the cells in the DataTable
Defined in: The Linked Earth Core Ontology
Link to the proxy observation property observed in the current measured variable. For example, the observation "A" observed the proxy observation property "Mg/Ca"
Defined in: The Linked Earth Core Ontology
The ORCID number of the Person
Defined in: The Linked Earth Core Ontology
Defined in: The Proxy Observation Ontology
Defined in: The Proxy Observation Ontology
An organic sensor. Examples of organic sensors include: foraminifera, trees, mollusks, polyps, etc.
Defined in: The Linked Earth Core Ontology
Defined in: The Proxy Sensor Ontology
Defined in: The Proxy Observation Ontology
The page range for the article.
Defined in: The Linked Earth Core Ontology
The Data pertaining to past environmental variability
Defined in: The Linked Earth Core Ontology
DataTable containig PaleoData Variables
Defined in: The Linked Earth Core Ontology
Model describing how the measuredVariables are transformed into inferredVariables
Defined in: The Linked Earth Core Ontology
How was the paleoData modeled?
Defined in: The Linked Earth Core Ontology
Defined in: The Proxy Archive Ontology
A publication that has undergone a formal peer-reviewed process.
Defined in: The Linked Earth Core Ontology
Defined in: The Proxy Observation Ontology
A person that has participated directly or indirectly in the authoring or contribution of any resources in Linked Earth.
Defined in: The Linked Earth Core Ontology
Defined in: The Proxy Observation Ontology
Defined in: The Proxy Sensor Ontology
Defined in: The Proxy Observation Ontology
Who is the PrincipalInvestigator of the Funding grant?
Defined in: The Linked Earth Core Ontology
The medium in which the response of a sensor to environmental forcing is recorded. Sensu Evans et al. (2013). Examples of archives include: marine sediments, corals, wood, lake sediments, speleothems, glacier ice, etc.
Defined in: The Linked Earth Core Ontology
A simplified description of how the sensor either creates or emplaces the signal into the archive. sensu Evans et al. 2013.
Defined in: The Linked Earth Core Ontology
The type of measurements made on the archives, whether chemical (e.g., Mg/Ca, d18O, TEX86, Sr/Ca....), physical (e.g. density, layer thickness) or biological (e.g. species abundance).
Defined in: The Linked Earth Core Ontology
The simplified representation of the way in which observations are made on the archive. sensu Evans et al. 2013.
Defined in: The Linked Earth Core Ontology
The sensor comprises physical, chemical, and/or biological components that react to environmental conditions. Sensors often respond to more than one environmental variable, and may have complex responses to the environment they sense, including thresholds (record only part of the range of environmental conditions), seasonal biases (record environmental conditions over a few months of the year), and/or nonlinear responses (Evans et al. (2013))
Defined in: The Linked Earth Core Ontology
A formalization of the behavior of the sensor in response to environmental forcing. Sensu Evans et al. 2013.
Defined in: The Linked Earth Core Ontology
Climate monitoring prior to the instrumental era are necessarily indirect. This indirect assessment is made on proxies. According to Evans et al. (2013), a proxy system is comprised of three components: - A ProxySensor - A ProxyArchive - A ProxyObservation
Defined in: The Linked Earth Core Ontology
In the Evans et al. (2013) framework, this is the combination of sensor, archive and observation models . "A generalized proxy system model encapuslates a simplified representation of prior physical, chemical, biological, and/or geological understanding of the ways in which environmental variation ultimately results in the observations used to retrieve paleoclimatic information."
Defined in: The Linked Earth Core Ontology
A document that serves as reference for a Dataset or its components
Defined in: The Linked Earth Core Ontology
Year when the publication was published. The literal is a numeric value in the format yyyy
Defined in: The Linked Earth Core Ontology
Where was the Dataset published? Property that relates a dataset to the publication where it was published.
Defined in: The Linked Earth Core Ontology
Defined in: The Proxy Observation Ontology
Defined in: The Proxy Observation Ontology
Defined in: The Proxy Observation Ontology
Relevant summary or preferably quotation from the referenced Publication
Defined in: The Linked Earth Core Ontology
Defined in: The Proxy Observation Ontology
Refers to the distance (physical or temporal) between each point on the archive. May or May not be related to sampling. Value with units
Defined in: The Linked Earth Core Ontology
Defined in: The Proxy Sensor Ontology
Defined in: The Proxy Observation Ontology
Defined in: The Proxy Archive Ontology
fluctuating or restricted according to the season or time of year
Defined in: The Linked Earth Core Ontology
Property that links the proxy archive to the target proxy sensor. This property determines how the archive senses the environment
Defined in: The Linked Earth Core Ontology
The Genus of the sensor
Defined in: The Linked Earth Core Ontology
The species of the sensor
Defined in: The Linked Earth Core Ontology
Defined in: The Proxy Observation Ontology
Defined in: The Proxy Observation Ontology
Defined in: The Proxy Sensor Ontology
A script that describes the model, in any programming language (e.g., Excel, Matlab, Python, R)
Defined in: The Linked Earth Core Ontology
Defined in: The Proxy Observation Ontology
Defined in: The Proxy Archive Ontology
Defined in: The Proxy Observation Ontology
Defined in: The Proxy Observation Ontology
Defined in: The Proxy Observation Ontology
Defined in: The Proxy Observation Ontology
Defined in: The Proxy Observation Ontology
Defined in: The Proxy Observation Ontology
Defined in: The Proxy Observation Ontology
The standard against which the observations are reported (for instance, VSMOW or VPDB)
Defined in: The Linked Earth Core Ontology
Defined in: The Linked Earth Core Ontology
Depth result at which the observation is taken
Defined in: The Linked Earth Core Ontology
Defined in: The Proxy Observation Ontology
Title of a publication
Defined in: The Linked Earth Core Ontology
Defined in: The Proxy Observation Ontology
Defined in: The Proxy Sensor Ontology
Defined in: The Proxy Observation Ontology
Defined in: The Proxy Observation Ontology
A state of incomplete knowledge that can result from a lack of information or from disagreement about what is known or even knowable. Uncertainty may come from many sources, from imprecision in the data to ambigously defined concepts or terminology, or uncertain projections of human bahavior. Uncertainty can be represented by quantitative measures (e.g., probability density function) or by qualitative statement (e.g., reflecting the judgement of a team of experts. Sensu IPCC AR5
Defined in: The Linked Earth Core Ontology
Quantile or number of standard deviations along a probability distribution of a Variable.
Defined in: The Linked Earth Core Ontology
A formalization of the way the uncertainty is accounted for
Defined in: The Linked Earth Core Ontology
Quantities which can be measured or inferred independently in an experiment
Defined in: The Linked Earth Core Ontology
Defined in: The Proxy Sensor Ontology
The volume number in which the publication appeared.
Defined in: The Linked Earth Core Ontology
Warnings of the variable or dataset being annotated
Defined in: The Linked Earth Core Ontology
Defined in: The Proxy Sensor Ontology
Defined in: The Proxy Archive Ontology
Defined in: The Proxy Observation Ontology
Defined in: The Proxy Observation Ontology
Defined in: The Proxy Observation Ontology