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Dataset

 

ADRIEX: Domain filling trajectories from UTRAJ model

Update Frequency: Not Planned
Status: Completed
Online Status: ONLINE
Publication State: Published
Publication Date: 2016-04-13
Download Stats: last 12 months

Abstract

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).

Citable as:  UK Royal Society; University of Oslo; Highwood, E.J.; Haywood, J. (2016): ADRIEX: Domain filling trajectories from UTRAJ model. NCAS British Atmospheric Data Centre, date of citation. https://catalogue.ceda.ac.uk/uuid/88f687c9ab627f980cfabbb0bc732e28
Abbreviation: Not defined
Keywords: ADRIEX, UTRAJ

Details

Previous Info:
No news update for this record
Previously used record identifiers:
http://badc.nerc.ac.uk/view/badc.nerc.ac.uk__ATOM__dep_11725088432715718
Access rules:
Public data: access to these data is available to both registered and non-registered users.
Use of these data is covered by the following licence: http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/. When using these data you must cite them correctly using the citation given on the CEDA Data Catalogue record.
Data lineage:

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.

File Format:
Data are netCDF or NASA Ames formatted

Related Documents

No documents related to this record were found.

Process overview

This dataset was generated by the computation detailed below.
Title Methven trajectory model deployed on Reading University computer
Abstract This computation involved: Methven trajectory model deployed on Reading University computer. John Methven, Reading University's reverse domain filling trajectory model. This can also give accumulated anthropogenic and biogenic emissions along trajectories.
Input Description None
Output Description None
Software Reference None

No variables found.

Coverage
Temporal Range
Start time:
2004-08-11T23:00:00
End time:
2004-09-12T23:00:00
Geographic Extent

 
46.0000°
 
7.0000°
 
30.0000°
 
40.0000°