A comparison of two schemes for the convective transport of chemical species in a Lagrangian global chemistry model

W. J. Collins; R. G. Derwent; C. E. Johnson; D. S. Stevenson

doi:10.1256/0035900021643629

A comparison of two schemes for the convective transport of chemical species in a Lagrangian global chemistry model

W. J. Collins, R. G. Derwent, C. E. Johnson, D. S. Stevenson

School of Geosciences

Research output: Contribution to journal › Article › peer-review

Abstract

We have developed a detailed parametrization scheme to represent the effects of subgrid-scale convective transport in a three-dimensional chemistry-transport model (CTM). The CTM utilizes the meteorological fields generated by a general-circulation model (GCM) to redistribute over 70 chemical species. The convective transport is implemented using the convective mass fluxes, entrainment rates and detrainment rates from the GCM.

We compare the modelled distributions of 222Rn with observations. This shows that the vertical profile of this species is affected by the choice of convective-transpo rt parametrization. The new parametrization is found to improve significantly the simulation of 222Rn over the summertime continents

Original language	English
Pages (from-to)	991-1009
Number of pages	19
Journal	Quarterly Journal of the Royal Meteorological Society
Volume	128
Issue number	581
DOIs	https://doi.org/10.1256/0035900021643629
Publication status	Published - Apr 2002

Access to Document

10.1256/0035900021643629

PDF Available Here
Published in Quarterly Journal of the Royal Meteorological Society (2002)
Final published version, 1.55 MB

Cite this

@article{8d580afb16204162bc56fb7f75f9b56c,

title = "A comparison of two schemes for the convective transport of chemical species in a Lagrangian global chemistry model",

abstract = "We have developed a detailed parametrization scheme to represent the effects of subgrid-scale convective transport in a three-dimensional chemistry-transport model (CTM). The CTM utilizes the meteorological fields generated by a general-circulation model (GCM) to redistribute over 70 chemical species. The convective transport is implemented using the convective mass fluxes, entrainment rates and detrainment rates from the GCM. We compare the modelled distributions of 222Rn with observations. This shows that the vertical profile of this species is affected by the choice of convective-transpo rt parametrization. The new parametrization is found to improve significantly the simulation of 222Rn over the summertime continents",

author = "Collins, \{W. J.\} and Derwent, \{R. G.\} and Johnson, \{C. E.\} and Stevenson, \{D. S.\}",

year = "2002",

month = apr,

doi = "10.1256/0035900021643629",

language = "English",

volume = "128",

pages = "991--1009",

journal = "Quarterly Journal of the Royal Meteorological Society",

issn = "0035-9009",

publisher = "Wiley-Blackwell",

number = "581",

}

TY - JOUR

T1 - A comparison of two schemes for the convective transport of chemical species in a Lagrangian global chemistry model

AU - Collins, W. J.

AU - Derwent, R. G.

AU - Johnson, C. E.

AU - Stevenson, D. S.

PY - 2002/4

Y1 - 2002/4

N2 - We have developed a detailed parametrization scheme to represent the effects of subgrid-scale convective transport in a three-dimensional chemistry-transport model (CTM). The CTM utilizes the meteorological fields generated by a general-circulation model (GCM) to redistribute over 70 chemical species. The convective transport is implemented using the convective mass fluxes, entrainment rates and detrainment rates from the GCM. We compare the modelled distributions of 222Rn with observations. This shows that the vertical profile of this species is affected by the choice of convective-transpo rt parametrization. The new parametrization is found to improve significantly the simulation of 222Rn over the summertime continents

AB - We have developed a detailed parametrization scheme to represent the effects of subgrid-scale convective transport in a three-dimensional chemistry-transport model (CTM). The CTM utilizes the meteorological fields generated by a general-circulation model (GCM) to redistribute over 70 chemical species. The convective transport is implemented using the convective mass fluxes, entrainment rates and detrainment rates from the GCM. We compare the modelled distributions of 222Rn with observations. This shows that the vertical profile of this species is affected by the choice of convective-transpo rt parametrization. The new parametrization is found to improve significantly the simulation of 222Rn over the summertime continents

U2 - 10.1256/0035900021643629

DO - 10.1256/0035900021643629

M3 - Article

SN - 0035-9009

VL - 128

SP - 991

EP - 1009

JO - Quarterly Journal of the Royal Meteorological Society

JF - Quarterly Journal of the Royal Meteorological Society

IS - 581

ER -

A comparison of two schemes for the convective transport of chemical species in a Lagrangian global chemistry model

Abstract

Access to Document

Fingerprint

Cite this