Climate Scenarios Service Description
The Lifemapper Climate Scenarios Service allows users to get a scenario or list scenarios that fit desired criteria.
Each scenario is a collection of related environmental layers. The relationship between the layers is usually defined by a time period for which the environmental layers are applicable, the organization that created the scenario, and if it is a future scenario, the prediction of the environmental scenario. This predicted scenario could be one which the impact of humans continues growing at the current rate, reduces, or remains constant and really anything else along that range.
Getting a List of Scenarios
If you call http://www.lifemapper.org/services/sdm/scenarios/xml with an HTTP GET request, a list of available scenarios will be returned.
The items returned in this list can be filtered using a number of url parameters. A full list of the available filter parameters can be found in the Lifemapper web services WADL document. You can get an idea of how the parameters work by visiting the listing service with a web browser. A form will be presented at the top of the page that will allow you to filter the results as well as display the filters used to generate that page of results.
A common way to use this service is to lookup which scenarios are compatible. This is particularly useful when you have determined what scenario you want to use to create a model and want to find out what scenarios you can then project that model on to. For this example, we will use the scenario with id 13 as our model scenario. We would then use the "matchingScenario" parameter to find out what scenarios we can use for projections. The resulting url will be:
Another way this service can be used is to determine which scenarios are current vs. future. For that we need to use the "keyword" parameter. Current environmental scenarios use the keyword "observed" while future scenarios use the keyword "predicted". This url will return all of the observed scenarios:
while this url will return predicted future scenarios:
The list of scenarios is available in a variety of formats. These formats do not contain the actual scenario data, just metadata about them.
Getting an Individual Scenario
You will need the scenario id number to return an individual scenario. You can browse the list of scenarios to find the scenario you would like, and just click the link.
Get an Individual Scenario Method explains in more detail how this service works.
Posting a Scenario
The Lifemapper QGIS client has an interface for posting climate scenarios. You can find more information about it on the QGIS plugin page.