Publications


Thermal versus mechanical topography: an experimental investigation in a rotating baroclinic annulus

Geophysical and Astrophysical Fluid Dynamics Taylor and Francis (0)

SD Marshall, P Read


DYNAMICS OF WEATHER REGIMES - QUASI-STATIONARY WAVES AND BLOCKING

MONTHLY WEATHER REVIEW 110 (1982) 1105-1145

BB REINHOLD, RT PIERREHUMBERT


THE TWO-DIMENSIONAL AND 3-DIMENSIONAL INSTABILITIES OF A SPATIALLY PERIODIC SHEAR-LAYER

JOURNAL OF FLUID MECHANICS 114 (1982) 59-82

RT PIERREHUMBERT, SE WIDNALL


The analysis of umkehr observations of stratospheric ozone by a ‘Maximum Entropy’ method

Quarterly Journal of the Royal Meteorological Society 108 (1982) 719-726

PL Read

An application is described of the ‘Maximum Entropy’ (ME) principle to the analysis of umkehr observations of atmospheric ozone. The method is shown to produce results which are comparable with more conventional analyses, and which show a marginally higher correlation with simultaneous ozonesonde measurements than the standard evaluation method. Differences between conventional and ME solutions are attributable to the low intrinsic information content of umkehr observations, and the use of climatological information in addition to observational data in the standard method of analysis. This additional information may also be included in ME solutions, reducing the systematic errors of the simple ME solutions, but possibly degrading that part of the information content of the solution which is due to the observations. Some further meteorological applications of the method are discussed. Copyright © 1982 Royal Meteorological Society


A family of steady, translating vortex pairs with distributed vorticity

Journal of Fluid Mechanics 102 (1981) 478-

RT Pierrehumbert

In our discussion of the behaviour of the limiting vortex pair boundary near the front stagnation point, we demonstrated that there are no solutions to the Euler equations in the half-plane x > 0 consisting of a region of constant non-zero vorticity separated from a region of irrotational flow by a straight-line boundary; from this we argued that the limiting vortex boundary must have a cusp where it contacts the negative y axis (see p. 137). However, a cusp is not the only kind of singular behaviour possible near the stagnation point. Prof. P. G. Saffman has pointed out to us that if the curvature of the boundary is allowed to become infinite at the stagnation point, the case of contact angle θO = 1/2π cannot be precluded, and further that such a solution can be found to leading order. In the rotational region we choose a stream function. © 1981, Cambridge University Press. All rights reserved.


THE STRUCTURE OF ORGANIZED VORTICES IN A FREE SHEAR-LAYER

JOURNAL OF FLUID MECHANICS 102 (1981) 301-313

RT PIERREHUMBERT, SE WIDNALL


A FAMILY OF STEADY, TRANSLATING VORTEX PAIRS WITH DISTRIBUTED VORTICITY

JOURNAL OF FLUID MECHANICS 99 (1980) 129-144

RT PIERREHUMBERT


2 AND 3 DIMENSIONAL INSTABILITIES OF A SPATIALLY PERIODIC SHEAR-LAYER

BULLETIN OF THE AMERICAN PHYSICAL SOCIETY 25 (1980) 1085-1085

RT PIERREHUMBERT, SE WIDNALL


Thermodynamic and Energetic Limits on Continental Silicate Weathering Strongly Impact the Climate and Habitability of Wet, Rocky Worlds

The Astrophysical Journal: an international review of astronomy and astronomical physics American Astronomical Society (0)

RJ Graham, R Pierrehumbert

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