TY - JOUR
T1 - A comparison between frontogenesis in the two‐dimensional Eady model of baroclinic instability and summertime cold fronts in the Australian region
AU - Reeder, Michael J.
AU - Smith, Roger K.
PY - 1986/1/1
Y1 - 1986/1/1
N2 - A two‐dimensional, anelastic, numerical model with a simple turbulence parametrization is integrated with Eady's linear normal mode solution for an unstable baroclinic wave as initial condition. The structure of the surface front which develops after five days of model integration is compared with data on summertime cold fronts, or ‘cool changes’, in south‐eastern Australia obtained during recent field experiments of the Australian Cold Fronts Research Programme. It is shown that the ridge‐trough structure of an amplifying baroclinic wave and its attendant surface front captures many of the important features of ‘cool changes’, together with the broad‐scale flow in which they develop. Indeed, it is argued that the model provides a useful theoretical framework in which the dynamics of the Australian summertime ‘cool change’ may be understood.
AB - A two‐dimensional, anelastic, numerical model with a simple turbulence parametrization is integrated with Eady's linear normal mode solution for an unstable baroclinic wave as initial condition. The structure of the surface front which develops after five days of model integration is compared with data on summertime cold fronts, or ‘cool changes’, in south‐eastern Australia obtained during recent field experiments of the Australian Cold Fronts Research Programme. It is shown that the ridge‐trough structure of an amplifying baroclinic wave and its attendant surface front captures many of the important features of ‘cool changes’, together with the broad‐scale flow in which they develop. Indeed, it is argued that the model provides a useful theoretical framework in which the dynamics of the Australian summertime ‘cool change’ may be understood.
UR - http://www.scopus.com/inward/record.url?scp=0022833202&partnerID=8YFLogxK
U2 - 10.1002/qj.49711247202
DO - 10.1002/qj.49711247202
M3 - Article
AN - SCOPUS:0022833202
VL - 112
SP - 293
EP - 313
JO - Quarterly Journal of the Royal Meteorological Society
JF - Quarterly Journal of the Royal Meteorological Society
SN - 0035-9009
IS - 472
ER -