Paul Berdahl

Paul Berdahl

Contact Information

Awards

2016 R&D 100 Award: Cool Roof Time Machine -  November 9th 2016

A Berkeley Lab-led team of scientists established a method to simulate soiling and weathering of roofing material, reproducing in the lab in only a few days what would naturally take three years. This “cool roof time machine” protocol has been approved by ASTM International, a widely referenced standards body, as a standard practice for the industry, and is expected to accelerate deployment of cool roofs, which have been shown to reduce a building’s energy use and mitigate the urban heat island effect.

R&D Magazine’s annual R&D 100 Awards recognize the top 100 technology products from industry, academia, and government-sponsored research. For more information on the awards, see the links below.

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Publications

2016

Next-Generation Factory-Produced Cool Asphalt Shingles: Phase 1 Final Report

Authors: Levinson, Ronnen M.; Sharon S. Chen; George A. Ban-Weiss; Haley E. Gilbert; Paul H. Berdahl; Pablo J. Rosado; Hugo Destaillats; Mohamad Sleiman, and Thomas W. Kirchstetter.
11/2016

Fluorescent Cooling of Objects Exposted to Sunlight - The Ruby Example

Authors: Berdahl, Paul H.; Sharon S. Chen; Hugo Destaillats; Thomas W. Kirchstetter; Ronnen M. Levinson, and Michael A. Zalich.

2015

Soiling of building envelope surfaces and its effect on solar reflectance – Part III: Interlaboratory study of an accelerated aging method for roofing materials

Authors: Sleiman, Mohamad; Sharon S. Chen; Haley E. Gilbert; Thomas W. Kirchstetter; Paul H. Berdahl; Erica Bibian; Laura S. Bruckman; Dominic Cremona; Roger H. French; Devin A. Gordon; Marco Emiliani; Justin Kable; Liyan Ma; Milena Martarelli; Riccardo Paolini; Matthew Prestia; John Renowden; Gian Marco Revel; Olivier Rosseler; Ming Shiao; Giancarolo Terraneo; Tammy Yang; Lingtao Yu; Michele Zinzi; Hashem Akbari; Ronnen M. Levinson, and Hugo Destaillats.
12/2015

2014

Soiling of building envelope surfaces and its effect on solar reflectance – Part II: Development of an accelerated aging method for roofing materials

Authors: Sleiman, Mohamad; Thomas W. Kirchstetter; Paul H. Berdahl; Haley E. Gilbert; Sarah Quelen; Lea Marlot; Chelsea V. Preble; Sharon S. Chen; Amandine Montalbano; Olivier Rosseler; Hashem Akbari; Ronnen M. Levinson, and Hugo Destaillats.
03/2014

Reflectometer measurement of roofing aggregate albedo

Authors: Levinson, Ronnen M.; Sharon S. Chen; Paul H. Berdahl; Pablo J. Rosado, and Louis A. Medina.
2/2014

2011

Soiling of building envelope surfaces and its effect on solar reflectance—Part I: Analysis of roofing product databases

Authors: Sleiman, Mohamad; George A. Ban-Weiss; Haley E. Gilbert; David François; Paul H. Berdahl; Thomas W. Kirchstetter; Hugo Destaillats, and Ronnen M. Levinson.
09/2011

2010

Measuring solar reflectance—Part I: Defining a metric that accurately predicts solar heat gain

Authors: Levinson, Ronnen M.; Hashem Akbari, and Paul H. Berdahl.
09/2010

Measuring solar reflectance—Part II: Review of practical methods

Authors: Levinson, Ronnen M.; Hashem Akbari, and Paul H. Berdahl.
09/2010

A novel technique for the production of cool colored concrete tile and asphalt shingle roofing products

Authors: Levinson, Ronnen M.; Hashem Akbari; Paul H. Berdahl; Kurt Wood; Wayne Skilton, and Jerry Petersheim.
06/2010

2008

Surface roughness effects on the solar reflectance of cool asphalt shingles

Authors: Berdahl, Paul H.; Hashem Akbari; Jeffry Jacobs, and Frank Klink.
04/2008

Weathering of roofing materials – An overview

Authors: Berdahl, Paul H.; Hashem Akbari; Ronnen M. Levinson, and William A. Miller.
04/2008

Evaluation of titanium dioxide as a photocatalyst for removing air pollutants

Authors: Berdahl, Paul H., and Hashem Akbari.
01/2008

2007

Methods of creating solar-reflective nonwhite surfaces and their application to residential roofing materials

Authors: Levinson, Ronnen M.; Paul H. Berdahl; Hashem Akbari; William A. Miller; Ingo Joedicke; Joseph C. Reilly; Yoshi Suzuki, and Michelle Vondran.
02/2007

2005

Effects of soiling and cleaning on the reflectance and solar heat gain of a light-colored roofing membrane

Authors: Levinson, Ronnen M.; Paul H. Berdahl; Asmeret A. Berhe, and Hashem Akbari.
12/2005

Solar spectral optical properties of pigments—Part I: model for deriving scattering and absorption coefficients from transmittance and reflectance measurements

Authors: Levinson, Ronnen M.; Paul H. Berdahl, and Hashem Akbari.
12/2005

Solar spectral optical properties of pigments—Part II: survey of common colorants

Authors: Levinson, Ronnen M.; Paul H. Berdahl, and Hashem Akbari.
12/2005

Potentials of urban heat island mitigation

Authors: Akbari, Hashem; Ronnen M. Levinson; William A. Miller, and Paul H. Berdahl.
05/2005

Rapid ion beam induced Ostwald ripening in two dimensions

Authors: Berdahl, Paul H.; Ronald P. Reade, and Richard E. Russo.

2004

Cool colored roofs to save energy and improve air quality

Authors: Akbari, Hashem; Paul H. Berdahl; Ronnen M. Levinson; Stephen Wiel; Andre Desjarlais; William A. Miller; Nancy Jenkins; Arthur H. Rosenfeld, and Chris Scruton.
08/2004

2003

A Review of Methods for the Manufacture of Residential Roofing Materials

Authors: Akbari, Hashem; Ronnen M. Levinson, and Paul H. Berdahl.
06/2003

Spectral Emissivity of Anodized Aluminum and the Thermal Transmittance of Aluminum Window Frames

Authors: Gustavsen, Arlid, and Paul H. Berdahl.
05/2003

Oblique ion texturing of yttria-stabilized zirconia: the {211}<111> structure

Authors: Berdahl, Paul H.; Ronald P. Reade; Jinping Liu; Richard E. Russo; Les Fritzemeier; David Buczek, and Urs Schoop.
11/2002

2002

Aging of reflective roofs: soot deposition

Authors: Berdahl, Paul H.; Hashem Akbari, and Leanna S. Rose.

Ion beam nanotexturing of buffer layers for near single crystal thin film deposition: Application to YBCO superconducting films

Authors: Reade, Ronald P.; Paul H. Berdahl, and Richard E. Russo.

1999

Reflective surfaces for cooler buildings and cities

Authors: Pomerantz, Melvin; Hashem Akbari; Paul H. Berdahl; Steven J. Konopacki; Haider Taha, and Arthur H. Rosenfeld.

1997

Preliminary survey of the solar reflectance of cool roofing materials

Authors: Berdahl, Paul H., and Sarah E. Bretz.

1996

ASTM standards for measuring solar reflectance and infrared emittance of construction materials and comparing their steady-state surface temperatures

Authors: Akbari, Hashem; Ronnen M. Levinson, and Paul H. Berdahl.
08/1996

1995

Multilayer YBaCuO structures using ion-assisted intermediate layers

Authors: Reade, Ronald P.; Paul H. Berdahl; Leonard W. Schaper, and Richard E. Russo.
06/1995

Building energy efficiency and fire safety aspects of reflective coatings

Authors: Berdahl, Paul H..

Y-Ba-Cu-O multilayer structures with amorphous dielectric layers for multichip modules using ion-assisted pulsed laser deposition

Authors: Reade, Ronald P.; Paul H. Berdahl; Leonard W. Schaper, and Richard E. Russo.

1993

Pulse I-V characteristics measurement to study dissipation mechanism in epitaxial YBaCuO thin films at high current densities

Authors: Gupta, Shiv K.; Paul H. Berdahl; Richard E. Russo; Gabriel Briceño, and Alex Zettl.
02/1993

1992

Laser deposition of biaxially textured yttria‐stabilized zirconia buffer layers on polycrystalline metallic alloys for high critical current Y‐Ba‐Cu‐O thin films

Authors: Reade, Ronald P.; Paul H. Berdahl; Stephen M. Garrison, and Richard E. Russo.
11/1992

Complex ac permeability and harmonic generation of a thin film of YBa2Cu3O7-δ: Measurements and models

Authors: Lam, Q. Harry; Carson D. Jeffries; Paul H. Berdahl; Richard E. Russo, and Ronald P. Reade.
07/1992

Angular Magnetoresistance Provides Texture Information on High-Tc Conductors

Authors: Berdahl, Paul H.; Xianglei Mao; Ronald P. Reade; Michael D. Rubin; Richard E. Russo, and E. Yin.

1991

Bi-Pb-Sb-Sr-Ca-Cu-O Superconducting Thin-Films Deposited on Ni-Based Alloy with Yttria-Stabilized Zirconia Intermediate Layers

Authors: Mao, Xianglei; Paul H. Berdahl; Richard E. Russo; H. B. Liu, and James C. Ho.
11/1991

Harmonic generation in YBaCuO and BiSrCaCuO

Authors: Lam, Q. Harry; Carson D. Jeffries; Paul H. Berdahl; Richard E. Russo; Gabriel Briceño, and Alex Zettl.