Contrail® Data Collection and Visualization Platform

  • "Target"

    Target - Synonymous with destination, a target is a file, device or any type of location to which data are moved or copied. Many computer commands involve copying data from one place to another. One says that the computer copies from the source to the...
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  • Above Mean Sea Level

    The term Above Mean Sea Level (MSL) refers to the elevation (on the ground) or altitude (in the air) of any object, relative to the average sea level datum.
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  • Acknowledge

    Contrail® provides an interface to track when a user presses a button acknowledging an alarm. This records the user and time when the alarm was acknowledged. Alarms must be acknowledged, either by a user or automatically, before they can become inactive....
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  • Acknowledged

    An alarm that has been acknowledged, either by the auto-acknowledge function or by a manual acknowledge.
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  • Active Alarms

    This is a list of all Active Alarms - those that have not been acknowledged, cleared, or both.
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  • Alarm

    Current, un-cleared warning.
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  • Alarm Rule Equation

    An Alarm condition set as a logical equation that evaluates sensor values, other values, time periods, etc. to determine if an alarm should be set and/or a notification sent.
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  • Alarm Title

    Alarm Titles include the following: Alarm, Freezing, Heartbeat, Min Voltage, Repeater Status, Temp Too Hot, Temperature Low, Test, Test Precipitation, Test Stage, Wind High.
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    Automated Local Evaluation in Real-Time. ALERT is radio-based transmission protocol that was developed for low power, low bandwidth (300 baud), real-time transmission of hydrometeorological data.
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  • ALERT rollovers

    ALERT data are limited to the range of 0 to 2047. As data goes above 2047, or below 0, the values wrap, which can cause large offsets for simplistic data handling.
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  • ALERT2™

    ALERT2 is the next generation upgrade and replacement for ALERT. The protocol has been developed through a Technical Working Group (ALERT2 TWG) through the National Hydrologic Warning Council (NHWC). It is designed to be backward compatible with ALERT,...
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  • Analytics

    Different to the On-Demand reports, Analytics is a reporting mechanism for deep data analysis and predictive maintenance. Sensor Network Performance Monitoring through pre-programmed reports to provide a Sensor-level snapshot of hydrometeorologic activity...
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  • Bookmark

    A custom link saved into Contrail® that can be used to access a page or graph in Contrail, or an external website.
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  • CDEC

    California Data Exchange Center. The California Data Exchange Center (CDEC) installs, maintains, and operates an extensive hydrologic data collection network including automatic snow reporting gauges for the Cooperative Snow Surveys Program and...
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  • CentOS

    CentOS Linux is a rebuild of the freely available sources for Red Hat Enterprise Linux (RHEL)
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  • Cleared

    An alarm that has been cleared through the auto clear function.
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  • Client Manager

    The section in the Contrail® program that allows you to add a new client or edit authorization terms of an existing Client.
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  • Clients

    Those persons from other organizations that you have allowed to have access rights to some/all of your sensors, for their own unique programming.
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  • Contact

    A Contact is a unique email address, SMS email address or SMS text message address that can be used for Alarm Deliveries. There is no limit to the number of Contacts. For ease of reference, each Contact should be given a unique descriptive name.
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  • Coordinated Universal Time

    Coordinated Universal Time (UTC) is a high-precision atomic time standard. UTC has uniform seconds defined by International Atomic Time (TAI) with leap seconds announced at irregular intervals to compensate for the Earths slowing rotation and other...
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  • Data Agent

    Package to actively collect information from publicly available web resources. The Data-Agent is designed to scrape information from a web resource and generate a normalized data file.
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  • Data Exchange

    The Data-Exchange API is an HTTP XML interface to Contrail.
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  • Data Quality Flag

    Data quality code assigned to data based upon automated data validation procedures applied to all incoming data. See data quality flags in the table of contents to see the possible values and their meanings.
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  • DIADvisor™

    OneRain’s DIADvisor is a real-time Microsoft Windows application that collects, stores and displays environmental data. The displays include the latest sensor values and area averaged rainfall.
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  • Digi

    Serial-to-IP device
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  • Dynamic SQL

    Dynamic SQL is an enhanced form of Structured Query Language (SQL) that, unlike standard (or static) SQL, facilitates the automatic generation and execution of program statements. This can be helpful when it is necessary to write code that can adjust to...
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  • Finished Value

    This value is the same as the reading value; the value after data conversion is applied.
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  • Gauge Adjusted Radar Rainfall (GARR)

    Gauge Adjusted Radar Rainfall (OneRain’s product StormData™ GARR) marries rain gauge estimates at a point with the spatial distribution information from the National Weather Service NEXRAD radars to give us information about what is happening between...
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  • Group

    A Group is a single address that can send emails or text messages to multiple individuals at once. A Group is created and then Contacts are assigned. There is no limit to the number of Groups or the number of Contacts (members) within a Group. For ease of...
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  • HADS

    Hydrometeorological Automated Data System. This is a collection of GOES data - The Office of Hydrologic Development of the National Weather Service operates HADS. Real-time and near real-time data acquisition, data processing and data distribution are the...
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  • Hold Off

    Hold Off equations are created to reduce alarm trigger notifications for data that meets an alarm condition, but is a unique situation not resulting in an actual alarm situation. An example would be wind causing a wave effect in a stream, resulting in a...
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  • icon(s)

    An icon is a graphic selected by the System Administrator to help visualize a point on a map. The icon may have a significant value, such as a plane icon identifying a site located at or near an airport. The icons represent sites and sensors, and change...
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    The Federal Integrated Flood Observing and Warning System (IFLOWS), created in the late 1970’s to assist flood-prone communities, is a cost-sharing cooperative venture between the National Weather Service (NWS) and seven flood-prone Appalachian states...
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  • Input System

    System defined to load data into Contrail.
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  • Last Reported

    Last Reported - Last valid good record. Users with privileges to see in-valid data can see the records.
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    METAR is the international standard code format for hourly surface weather observations which is analogous to the SA coding currently used in the U.S. The acronym roughly translates from French as Aviation Routine Weather Report. METAR is predominantly...
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  • NOAA Tides

    NOAA Tides data feed - The National Oceanic and Atmospheric Administration's vast collection of oceanographic and meteorological data (historical and real-time), predictions, and nowcasts and forecasts. NOAA Tides and Currents, managed by the Center for...
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  • NWS

    National Weather Service - Official US weather, marine, fire and aviation forecasts, warnings, meteorological products, climate forecasts and information about meteorology.
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    National Weather Service Location Identifier, defined by the NWS and often used in Contrail® as a Site ID.
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  • On Demand Reports

    An on-demand report is a formatted template-based version of a report run with the currently available data and viewed immediately.
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  • Operational

    Fully operational, no known problems.
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    ORBCOMM is a global satellite data communications company focused exclusively on Machine-to-Machine communications.
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  • Out of Service

    Currently disabled and not available (either under maintenance, or no longer being used).
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  • Predicted Rainfall

    Measurement of predicted rainfall based on Gauge Adjusted Radar Rainfall data.
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  • Predicted Rainfall Accumulation

    Measurement of predicted rainfall accumulation based on Gauge Adjusted Radar Rainfall data.
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  • Quality

    Here the term is used in relation to the value of the data collected.
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  • Quality Validation Codes

    A one or two-character alpha code assigned to processed data (finished value) that indicates the status and quality of the data.
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  • Raw

    This is the value supplied by the source system. It is the value before any conversion or validations are applied.
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  • Reading

    Finished data value with precision (conversion) applied.
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  • Real Time Data Service

    Real Time Data Service. OneRain uses real-time radar data from its vendors and real-time rain gauge data from its customers to calibrate the radar data and deliver rainfall data immediately back to the customer in a variety of formats for decision...
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  • Red Hat

    Red Hat® Enterprise Linux® is an open source operating system (OS). The OS is open source, but the support subscription has a fee.
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  • Reported

    The date and time of the last data report received by the sensor.
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  • RWIS

    Road Weather Information System. A network of meteorological, water level and pavement sensors, technically referred to as Environmental Sensor Stations (ESS), located along the highway system.
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  • Sensor

    A sensor is a device used to monitor a specific condition. There are numerous types of sensors, all designed to monitor different things. A stage sensor monitors the depth of water, a rain gauge monitors rainfall, a battery sensor would identify if a...
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  • Sensor Type

    Type of sensor to be added. This is used to set up the default values for the new sensor.
    Sensor types must be defined in the system for which you are adding the new sensor prior to adding a new sensor.

    Examples of Sensor Types: Air...
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  • SHEF Code

    Standard Hydrologic Exchange Format code, in the form of a two-character code defined by the NWS to describe each measurement taken at a weather station.

    In Contrail, common SHEF codes for a SHEF .A system include HG (Stage/Gauge Height),...
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  • Site ID

    A unique name/number assigned to a site by the owner of the site.
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  • Sites

    A Site is a specific location in your data set (and in the real world) where one or more sensors are located. The site is described by elevation, longitude and latitude. The System Administrator may have provided an additional note at the Site Details...
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  • Source Data Parameters

    These are the various ways to collect information. See each topic separately for more detailed description of each source.
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  • Sparkline

    A small line chart typically drawn without axes or coordinates. Although a free-floating line, you can quickly view any significant changes to assess the overall movement/change of the data being monitored. These little data lines, because of their active...
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  • SQL

    Structured Query Language: Dynamic SQL is an enhanced form of Structured Query Language (SQL) that, unlike standard (or static) SQL, facilitates the automatic generation and execution of program statements. This can be helpful when it is necessary to...
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  • Synthetic Sensor

    A synthetic sensor derives its value from data collected at another (real) sensor. Synthetic sensors can be a direct conversion, or derived from equations or rating tables. Once this sensor has been created, the next step is to edit the sensor source to...
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  • System Interfaces

    There are two types of system interfaces, Input and Output.
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  • System Type

    System Types are pre-defined in Contrail® and have a default System Interface of Input or Output. Systems types are already configured with specific settings, an interface, and addressing (for data-flow). Systems Types can have System Attributes, that...
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  • Threshold

    A measurement helpful to readily understand data relevancy in relation to environmental situations.
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  • Triggered

    A sensor that has reached a pre-determined "value" such that it triggers an alarm.
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  • URL

    URL (Uniform Resource Locators) are the standardized means of addressing pages in the Web. There are two basic types of URLs: absolute and relative. They each have their place for use in links in your websites. Absolute URLs specify the location of a Web...
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  • User(s)

    Person(s) who has been authorized to view the Contrail® program, as well as any additional access privileges granted to them.
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  • USGS

    United States Geological Survey is a scientific agency of the United States government. The USGS provides impartial information on the health of our ecosystems and environment, the natural hazards that threaten us, the natural resources we rely on, the...
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  • UTC

    Universal Time Coordinated (UTC) is a high-precision atomic primary time standard by which the world regulates clocks and time. UTC has uniform seconds defined by International Atomic Time (TAI) with leap seconds announced at irregular intervals to...
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  • View(s)

    View(s) are used to group sites together for viewing on maps or lists.
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