AirWare On-line Reference Manual
| ||Release Level || 7.0 |
| ||Revision Level ||beta|
| ||Release Date ||2015 03 |
Last modified on:
Tuesday, 1-Dec-15 11:07 CET
OBJECT Data Base: Monitoring Station
Monitoring Stations describe the physical monitoring equipment,
its location, and lead to the actual
monitoring time series.
This includes meteorological variables, emissions, and ambient concentrations.
A special case are traffic observations in real time.
The monitoring stations are accessible to a CLASS specific OBJECT selector,
that list the stations (sortable list), indicates their type (air quality, meteorology, combined)
and shows the number of time series associated with each station.
The last number shown is the total number of valid data points,
also displayed as a color coded (ranking) bar.
A Monitoring Station Object is defined by its
HEADER including a hypertext page describing it, and the list selector
for all the time series collected there.
Other attributes are grouped into topics that
are shown in pop-up windows triggered by (optional) BUTTONS. They include:
- Links to other objects
- Administrative information
- Technical information
Time series (parameter) selection>
Under the Object HEADER, the page displays a selector of available
time series, organized in terms of their parameters.
The selector (full page width) shows:
- Parameter name
- Last measurement (end date)
- First measurement (start date)
- Time step (symbolic, i.e., a STRING that can also indicate irregular sampling or bi-monthly);
- Number of observations
- Coverage in % (100-% of missing values).
The MONITORING TIME SERIES themselves consist of a HEADER, and the actual
time-stamped values. TIME SERIES META DATA compiled during the import
- USER: (determined automatically)
- NAME: a descriptive (short) name for the time series that will be used in the selector list;
- TYPE: one of historical or real-time.
- DESCRIPTION: a free text field that defines, e.g., data source (such as the original
monitoring station/sensor), method for patching, assumptions (for synthetic time series);
- LOCATION: defines the geographical scope (on import, this selected by the user
from a list of pre-defined options, or generated automatically from the application's
CONFIGURATION information if the data base covers a single location);
- VARIABLE: (or parameter selected from a pre-defined list) with its associated UNIT;
- START DATE: will be determined automatically from the time stamps of the imported data.
- TIME STEP: symbolic label for the time stamp (e.g., hourly, daily, monthly, irregular);
internally, we can derive the time tep in minutes from the delta between the obervations;
- GENERATED: date of original imnport;
- LAST MODIFIED: date of last update, mainly for real-time data;
Other descriptive information is organized in two linked pages:
- Administrative information, describing the owner or operator,
contact addresses etc.
- Technical information, describing the actual monitoring equipment used,
- Address block for the institution and a contact person with an optional
second (local, on site) address, derived from the INSTITUTIONS data base,
relational contact/address data base TABLE.
||List of sensors/methods used for the parameters monitored;
for each sensor, the following information can be stored
and displayed in a separate pop-up window:
- Sensor name
- Hypertext link (URL) for descriptive text and optional imagery.
- Model name
- Sensor technology
- Year of installation
- Date of last maintenance/calibration