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Frequently Asked Questions | Data

FAQ Topics

About Cal-Adapt (7)
» Data (8)
Terms (3)
All (18)
Q

Where can I find out more about how the Climate Data used in the site were developed?

A

Visit our Understanding Climate Change section to find out more about different emissions scenarios and climate models

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Q

Where does Cal-Adapt's data come from?

A

The data used within Cal-Adapt have been contributed from a variety of research labs around the State of California.  Information about where specific data sets are from can be found in our Data Sources page.

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Q

What is a projection?

A

The term "projection" is used in two senses in the climate change literature. In general usage, a projection can be regarded as any description of the future and the pathway leading to it. However, a more specific interpretation has been attached to the term "climate projection" by the IPCC when referring to model-derived estimates of future climate.

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Q

What is a Scenario?

A

A coherent, internally consistent and plausible description of a possible future state of the world. It is not a forecast; rather, each scenario is one alternative image of how the future can unfold. A set of scenarios is often adopted to reflect, as well as possible, the range of uncertainty in projections. Other terms that have been used as synonyms for scenario are "characterization", "storyline" and "construction".

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Q

What is uncertainty?

A

The future climate data available, and used within Cal-Adapt, represent a projection of potential future climate scenarios, they are not predictions. These data are meant to illustrate how the climate may change based on a variety of different potential social and economic factors.  A thorough examination of model performance and evaluations can be found in the IPCC's Third Assessment Report.

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Q

What is the IPCC?

A

Acronym for Intergovernmental Panel on Climate Change. IPCC is the leading international body for the assessment of climate change. It was established by the United Nations Environment Programme (UNEP) and the World Meteorological Organization (WMO) to provide the world with a clear scientific view on the current state of knowledge in climate change and its potential environmental and socio-economic impacts. More Info »

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Q

How do I open ".tgz" files downloaded in the raster download tool?

A

The .tgz files are zipped packages that contain multiple climate data layer files.  You can use an application such as 7zip to extract the data files.

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Q

How can I view Raster data that I download from Cal-Adapt?

A

Raster data may be viewed and used in analysis in a GIS.  There are many GIS applications to choose from such as ESRI's ArcGIS, or the open source and freely available Quantum GIS.  

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