Climateprediction.net

General Info

Title:	Climateprediction.net
Type:	Data Entity
Sub-Type:	Simulation
Abbreviation:	cpdn
Publication State:	published
The publication state of this metadata: 'old' - for redundant records; 'working' - for new/in progress records; 'published' - for records approaching maturity, which may still change, but should be available via the discovery services; and 'Published' for mature records that are unlikely to change and should be available via the discovery services.

URI:	http://badc.nerc.ac.uk/view/badc.nerc.ac.uk__ATOM__dataent_cpdn

Summary
A brief description of the data.

The Climateprediction.net project is harnessing the spare CPU cycles of tens of thousands of individual users' PCs to run a massive ensemble of climate simulations using the Met Office's Unified Model. A multi-thousand member ensemble of simulation results from the perturbed physics climate sensitivity experiment is available for research purposes.

Content
The actual data being described by this document. NB, in the case of data granules, this content may just be a reference to an ingested CSML or CDML file.

Introduction

The Climateprediction.net project is harnessing the spare CPU cycles of tens of thousands of individual users' PCs to run a massive ensemble of climate simulations using the Met Office's Unified Model. The project has been running since September 2003 and has progressed through several modelling experiments from an initial climate sensitivity experiment through to the launch of the fully Atmosphere/Ocean coupled transient climate response experiment in February 2006. Full details of the project's experimental strategy is available from the Climateprediction.net website

Access Restrictions

This dataset is now public following a 2 year access restriction to academic users only as per the Climateprediction.net data protocol.

You can now access the dataset via the Browse Archive pages of the BADC web-interface or via anonymous FTP.

Availability of data and file format

The data is divided into a series of volumes with a consistent directory structure. Volumes are filled in the order data is submitted and therefore a single volume may contain simulations from multiple Climateprediction.net experiments.

The first volume in the dataset (vol-000) is a quality controlled subset of early Climateprediction.net data that is documented seperately here. This volume contains aproximately 2500 runs with a total size of 13Gb. Subsequent volumes will be an order of magnitude larger.

Each simulation is stored within a volume at a URL matching the following pattern:

ftp://ftp.badc.ac.uk/badc/cpdn/volumes/vol-xxx/model/yy/result-name

Where xxx is a zero-padded volume number, model identifies the type of Climateprediction.net simulation (e.g. standard for the HadSM3 slab model experiment or sulphur for the HadSM3 + sulphur cycle experiment) and yy is a directory branch designed to limit the size of individual directories. The directory branch yy is currently calculated as the first 2 characters of the simulation's UM id, which is usually also part of the result-name. However, this feature should not be assumed as future volumes may use a different convention.

Within each simulation directory data is stored as a series of NetCDF files conforming to the CF metadata standard.

Documentation, Links to further information and references

Documentation:

Links:

Climateprediction.net website

Citation

Date of citation

Who to contact

If you would like to know more about Climateprediction.net data and how to obtain it from the BADC, you should contact us through the BADC support line.

Lineage
Summary of the origins of the dataset, e.g.: "Dataset produced from NASA MODIS instrument on Terra and collected at the University of York's groundstation 1999-2003 and a copy provided to NEODC in June 2007".

Data produced by ClimatePrediction.net and provided as is to the BADC.

Quality Statement
Description of the relative quality of the dataset.

unknown

Author
The principal author of the actual underlying data. Only one author can be specified per atom; if there are multiple authors, these should be specified as 'contributors'. NB, an atom MUST have an author specified.

Name	email
NERC Climateprediction.net

Online References
Online references with a specific relationship to the data being described here. NB, if links are supplied they must be valid and include the transport protocol - e.g. 'http://blah.co.uk'. Also, note, three online references can be added at once; after these are added a further three may be specified - and so on.

Relation	Title
Download	Climateprediction.net Data Directory
Logo	Climateprediction.net Logo
Documentation	BADC Doc: Climateprediction.net Initial quality controlled subset release
Documentation	Climateprediction.net website
Documentation	Climateprediction.net Data Protocol

Parent Data Entity
Define the parent of this record. There should probably only be one parent, but this is not enforced.

No data specified at present

Sub Data Entities
Lists all entities which have the current entity as their parent.

None

Associated Deployments

Data Coverage
Summary of the temporal and spatial data coverage for the data.

Spatial coverage
Max Y: 90.0
Min X: -180.0	Max X 180.0
Min Y -90.0

Temporal coverage
Start Date:	2006-03-12
End Date:

Spatial resolution

No spatial resoultion information available.

Vertical extent

No vertical extent information available.

Responsible Parties
Parties responsible for the metadata - e.g. data curator. Responsible parties can have a role specified to make their function clearer. Multiple responsible parties can be specified.

Role	Name	URI
Data Curator	badc.nerc.ac.uk	http://badc.nerc.ac.uk

Other Info
Other miscellaneous information. Note, update frequency relates to the update frequency of the underlying data, not the metadata.

Dataset language

English

Update frequency

notPlanned

Links and Services
	Downloadable XML version of this record

Not all information in this record may be rendered in this view. Please see the XML version for complete content

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