Publications by Raymond Pierrehumbert


Subtropical water vapor as a mediator of rapid global climate change

in Mechanisms of Global Climate Change at Millennial Time Scales, American Geophysical Union (1999) 22
Part of a series from Geophysical Monograph Series

RT Pierrehumbert


Spatially inhomogeneous random advection

12TH CONFERENCE ON ATMOSPHERIC AND OCEANIC FLUID DYNAMICS (1999) 307-311

K Ngan, RT Pierrehumbert, AMS, AMS


Huascaran delta O-18 as an indicator of tropical climate during the Last Glacial Maximum

GEOPHYSICAL RESEARCH LETTERS 26 (1999) 1345-1348

RT Pierrehumbert


Subtropical water vapor as a mediator of rapid global climate change

in Geophysical Monograph Series, 112 (1999) 339-361

RT Pierrehumbert

© 1999 by the American Geophysical Union. This article surveys the essential features of atmospheric water vapor dynamics needed to address current issues regarding the possible role of water vapor changes in mediating climate fluctuations on the millennial to Milankovic time scales. The focus is on the subtropics, which afford the most interesting possibilities for significant feedbacks. The observed distribution of water vapor, the amount by which water vapor must change in order to cause a significant temperature change, and the physical factors that determine the water vapor content of the subtropical atmosphere are discussed. It is shown that halving the subtropical relative humidity would lead to a 2.5K cooling of the tropics, while doubling it would lead to a 3K warming. The humidity content of the subtropics could be reduced by enhancing subsidence, reducing transient eddy activity, or contracting the convective region. Further work is needed to determine which, if any, of these changes occur in concert with the observed millennial and longer scale climate fluctions.


On the scattering greenhouse effect of CO2 ice clouds

JOURNAL OF THE ATMOSPHERIC SCIENCES 55 (1998) 1897-1903

RT Pierrehumbert, C Erlick


Evidence for control of Atlantic subtropical humidity by large scale advection

GEOPHYSICAL RESEARCH LETTERS 25 (1998) 4537-4540

RT Pierrehumbert, R Roca


Lateral mixing as a source of subtropical water vapor

GEOPHYSICAL RESEARCH LETTERS 25 (1998) 151-154

RT Pierrehumbert


Warming early Mars with carbon dioxide clouds that scatter infrared radiation.

Science (New York, N.Y.) 278 (1997) 1273-1276

F Forget, RT Pierrehumbert

Geomorphic evidence that Mars was warm enough to support flowing water about 3.8 billion years ago presents a continuing enigma that cannot be explained by conventional greenhouse warming mechanisms. Model calculations show that the surface of early Mars could have been warmed through a scattering variant of the greenhouse effect, resulting from the ability of the carbon dioxide ice clouds to reflect the outgoing thermal radiation back to the surface. This process could also explain how Earth avoided an early irreversible glaciation and could extend the size of the habitable zone on extrasolar planets around stars.


Lower-tropospheric heat transport in the Pacific storm track

JOURNAL OF THE ATMOSPHERIC SCIENCES 54 (1997) 1533-1543

KL Swanson, RT Pierrehumbert


Anomalous scaling of high cloud variability in the tropical Pacific

GEOPHYSICAL RESEARCH LETTERS 23 (1996) 1095-1098

RT Pierrehumbert


Baroclinic instability

(1995)

RT Pierrehumbert, KL Swanson

The study of baroclinic instability has its origins in attempts to explain the genesis of midlatitude synoptic storm systems. The authors provide an account of the fundamental material and unfamiliar aspects of the linear theory. Essential observational background is provided in section 2, and the mathematical basics are laid out in section 3. The review for the most part focuses on quasigeostrophic dynamics, considering only dry dynamics. Discussion is slanted towards the terrestrial atmosphere. Stability criteria are treated in section 4, and normal modes are discussed in section 5. Aspects of the linear initial value problem are taken up in section 6. Section 7 considers briefly the difficult subject of nonlinear equilibration. Finally, section 8, takes stock of where the subject stands and where it is going. (from Authors)


Baroclinic instability

(1995)

RT Pierrehumbert, KL Swanson

The study of baroclinic instability has its origins in attempts to explain the genesis of midlatitude synoptic storm systems. The authors provide an account of the fundamental material and unfamiliar aspects of the linear theory. Essential observational background is provided in section 2, and the mathematical basics are laid out in section 3. The review for the most part focuses on quasigeostrophic dynamics, considering only dry dynamics. Discussion is slanted towards the terrestrial atmosphere. Stability criteria are treated in section 4, and normal modes are discussed in section 5. Aspects of the linear initial value problem are taken up in section 6. Section 7 considers briefly the difficult subject of nonlinear equilibration. Finally, section 8, takes stock of where the subject stands and where it is going. (from Authors)


BAROCLINIC INSTABILITY

ANNUAL REVIEW OF FLUID MECHANICS 27 (1995) 419-467

RT PIERREHUMBERT, KL SWANSON


SURFACE QUASI-GEOSTROPHIC DYNAMICS

JOURNAL OF FLUID MECHANICS 282 (1995) 1-20

IM HELD, RT PIERREHUMBERT, ST GARNER, KL SWANSON


THERMOSTATS, RADIATOR FINS, AND THE LOCAL RUNAWAY GREENHOUSE

JOURNAL OF THE ATMOSPHERIC SCIENCES 52 (1995) 1784-1806

RT PIERREHUMBERT


POTENTIAL VORTICITY HOMOGENIZATION AND STATIONARY WAVES

JOURNAL OF THE ATMOSPHERIC SCIENCES 52 (1995) 990-994

KL SWANSON, RT PIERREHUMBERT


Baroclinic instability

Annual Review of Fluid Mechanics 27 (1995) 419-467

RT Pierrehumbert, KL Swanson


The mixing paradigm: Towards a Lagrangian view of the general circulation

ENVIRONMENT AND QUALITY OF LIFE (1995) 102-113

RT PIERREHUMBERT


Temperature fluctuations and atmospheric heat flux

TENTH CONFERENCE ON ATMOSPHERIC AND OCEANIC WAVES AND STABILITY (1995) 196-197

KL Swanson, RT Pierrehumbert, AM SOC


PRODUCTION OF DRY AIR BY ISENTROPIC MIXING

JOURNAL OF THE ATMOSPHERIC SCIENCES 51 (1994) 3437-3454

H YANG, RT PIERREHUMBERT

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