ADRIEX: Domain filling trajectories from UTRAJ model

The Aerosol Direct Radiative Impact Experiment (ADRIEX) was a joint UK Met Office/Natural Environment Research Council (NERC)/UK Royal Society/University of Oslo project aiming at improving our understanding of the radiative effects of anthropogenic aerosol and gases (ozone and methane) in the troposphere.

This dataset contains forecast trajectories computed using UTRAJ.

The term “particle trajectory” describes the path of a point which is blown by a time dependent wind field (i.e. (u, v, w) as a function of (x, y, z, t)). Trajectories following the analysed wind field are described by their coordinates (e.g. longitude, latitude, pressure) at regularly spaced time intervals. “Domain filling” refers to calculations where the arrival points of back trajectories (or release points for forward trajectories) form a dense, regular grid in a specified volume. The term “reverse” is used to indicate that the particles are followed backwards in time. Back trajectories are assumed to arrive on a 3D grid consisting of a stack of horizontal grids (regular in longitude and latitude) on a range of pressure levels. Forward trajectories are assumed to depart from similar grids. The trajectory length (time before arrival for back trajectories) is denoted by the letter T. Other fields can also be recorded following the trajectories: for example, temperature, specific humidity or potential vorticity. These extra fields are described as “attributes” and will be denoted by the variable C. The change in the value of an attribute over the length of a trajectory is denoted by C(0) − C(T).

Date (Publication): 2016-04-13T15:11:40

Date (Creation): 2016-04-13T15:11:40

Citation identifier: https://catalogue.ceda.ac.uk/uuid/88f687c9ab627f980cfabbb0bc732e28

Citation identifier: NCAS British Atmospheric Data Centre (NCAS BADC) / 88f687c9ab627f980cfabbb0bc732e28

Point of contact

Organisation name	Individual name	Electronic mail address	Role
UK Royal Society		unknown	Author
University of Oslo		unknown	Author
Unavailable	Highwood, Ellie J.	Unavailable	Author
Unavailable	Haywood, Jim	Unavailable	Author
NCAS British Atmospheric Data Centre (NCAS BADC)		badc@rl.ac.uk	Custodian
NCAS British Atmospheric Data Centre (NCAS BADC)		badc@rl.ac.uk	Distributor
unknown		unknown	Principal investigator
NCAS British Atmospheric Data Centre (NCAS BADC)		badc@rl.ac.uk	pointofContact
NCAS British Atmospheric Data Centre (NCAS BADC)		badc@rl.ac.uk	Publisher

Maintenance and update frequency: Not planned

Update scope: Dataset

Keywords

ADRIEX
UTRAJ

GEMET - INSPIRE themes, version 1.0

atmospheric conditions

Access constraints: Other restrictions

Other constraints: Public data: access to these data is available to both registered and non-registered users.

Use constraints: Other restrictions

Other constraints: Under the following licence http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/, appropriate use of these data may fall under any use. This message is intended as guidance, always read the full licence. When using these data you must cite them correctly using the citation given on the CEDA Data Catalogue record.

Spatial representation type: Grid

Language: English

Topic category

Climatology, meteorology, atmosphere

Begin date: 2004-08-11T23:00:00

End date: 2004-09-12T23:00:00

Unique resource identifier: WGS 84

Distribution format

Name	Version
Data are netCDF or NASA Ames formatted

Distributor contact

Organisation name	Individual name	Electronic mail address	Role
NCAS British Atmospheric Data Centre (NCAS BADC)		badc@rl.ac.uk	Distributor

OnLine resource

Protocol	Linkage	Name
	https://catalogue.ceda.ac.uk/uuid/88f687c9ab627f980cfabbb0bc732e28	CEDA Data Catalogue Page

OnLine resource

Protocol	Linkage	Name
	http://data.ceda.ac.uk/badc/adriex/data/forecasts/utraj-df/	DOWNLOAD

Hierarchy level: Dataset

Conformance result

Title: Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services

Date (Publication): 2010-12-08

Statement: Trajectories and other forecast products calculated by John Methven (University of Reading), based on European Centre for Medium-Range Weather Forecasts (ECMWF) forecast wind fields, to support Aerosol Direct Radiative Impact Experiment (ADRIEX) flight planning.