Department of Energy Argonne National Laboratory Office of Science NEWTON's Homepage NEWTON's Homepage
NEWTON, Ask A Scientist!
NEWTON Home Page NEWTON Teachers Visit Our Archives Ask A Question How To Ask A Question Question of the Week Our Expert Scientists Volunteer at NEWTON! Frequently Asked Questions Referencing NEWTON About NEWTON About Ask A Scientist Education At Argonne Air and Saturation Pressure

Name: Robert
Status: other
Grade: 12+
Location: WA
Country: USA
Date: Spring 2012


Question:
Can actual air pressure ever be greater than saturation air pressure? If so, how?


Replies:
Robert,

To clarify the question, I assume that you are asking whether air pressure can ever be greater than the air pressure when the air is saturated. When you add water vapor to the air, you are adding molecules that have less mass than the molecules that compose dry air. If the air parcel remained at the same volume and temperature as the dry air, the air pressure of the saturated parcel would be greater.

David R. Cook Meteorologist Climate Research Section Environmental Science Division Argonne National Laboratory


Click here to return to the Weather Archives

NEWTON is an electronic community for Science, Math, and Computer Science K-12 Educators, sponsored and operated by Argonne National Laboratory's Educational Programs, Andrew Skipor, Ph.D., Head of Educational Programs.

For assistance with NEWTON contact a System Operator (help@newton.dep.anl.gov), or at Argonne's Educational Programs

NEWTON AND ASK A SCIENTIST
Educational Programs
Building 360
9700 S. Cass Ave.
Argonne, Illinois
60439-4845, USA
Update: June 2012
Weclome To Newton

Argonne National Laboratory