Arctic Surface Climate Simulation Bias

Arctic Surface Climate Simulation Bias Project: Selected Documents

Ln(surface pressure) Bias

Bias in natural log of surface pressure

Page Last modified: 30 May 2008

Purpose of this site:

This site is intended to accumulate materials that foster communications about our study of Arctic surface climate simulation bias. We are particularly interested in the bias found in the NCAR community climate models.

We are grateful that the project is funded by NSF through grant ATM 0354545.

Participants in the work include:
Principal Investigator: R. Grotjahn
Past or present support of graduate students: E. Hanrahan, M. Osman, E. Tan
Past or present postdoctoral scholar: L. Pan
Senior scientific advisors: G. Branstator, B. Briegleb, J. Tribbia

In-Progress Summary Documents:

SWM Bias & Forcing Summary (29.8 Mb .doc file) Summary of some of Lin Lin Pan's work with Grant Branstator's SWM during September 2006 - January 2007.
GB Partition (0.3 Mb .doc file) Sketch of how to partition transient, diabatic and other sources in the T equation.
Bias Partition (6.9 Mb .doc file) Summary of some of Lin Lin Pan's work partitioning the bias field amongst transient, diabatic, and other processes. February 2007 -
LINK to Dr. Lin Lin Pan's summary documents for the linear stationary wave model and its forcing. February 2007 -
CAM3-ERA40 forcing images (7.1 Mb .pdf file) variable contour, full T42 resolution, 3 sigma sfcs
CAM3-ERA40 forcing images (4.6 Mb .doc file) fixed contour, full T42 resolution, 3 sigma sfcs
CAM3-ERA40 forcing images (4.6 Mb .doc file) variable contour, calc at T42 but plot at R12 resolution
R12 10L LSW model F from ERA-40 images (1.8 Mb .doc file) variable contour

Conference and Workshop Presentations:

Oral Presentation (3.4 Mb pdf file) 2004 CCSM Workshop, Santa Fe.
Poster (2.4 Mb pdf file) 2005 CCSM Workshop, Breckenridge.
Poster (0.2 Mb pdf file) 2005 IAMAS, Beijing.
Poster (20.9 Mb pdf file) 2006 CCSM Workshop, Breckenridge.
Poster (23.7 Mb ppt file) 2006 CCSM Workshop, Breckenridge.
Oral Presentation (11.7 Mb ppt file) 2007 AMWG meeting, Boulder.
Oral Presentation (4.4 Mb pdf file) 2007 AMWG meeting, Boulder.
Poster (5.5 Mb ppt file) 2007 CCSM Workshop, Breckenridge.
Poster (0.6 Mb pdf file) 2007 CCSM Workshop, Breckenridge.
Oral Presentation (5.4 Mb ppt file) 2008 AMWG meeting, Boulder.
Oral Presentation (5.9 Mb pdf file) 2008 AMWG meeting, Boulder. This file has poor quality pictures but includes explanatory notes for each slide.
Poster (8.1 Mb ppt file) 2008 CCSM Workshop, Breckenridge.
Poster (2.4 Mb pdf file) 2008 CCSM Workshop, Breckenridge.
Oral Presentation (7.4 Mb ppt file) 2008 CCSM Workshop, Breckenridge.
Poster (12.6 Mb ppt file) 2009 CCSM Workshop, Breckenridge.
Poster (5.6 Mb ppt file) July 2009 MOCA-09 (IAMAS) conference, Montreal, Canada.

Publications:

Includes all publications, including those partially supported by our NSF grant

Grotjahn 2005 Type-B cyclogenesis (1.4 Mb pdf file)
Grotjahn and Osman 2007 (2.1 Mb pdf file) on the North Pacific subtropical high
Grotjahn 2007a (0.4 Mb pdf file, preprint) Overview & 'Imagining' the General Circulation (Dynamics of Atmospheres and Oceans, Spring, 2007 Note: this is a proof version with corrections, not the final version. For the final version, see the Science Direct website for accessing DAO articles: http://www.sciencedirect.com/science/journal/03770265 or contact the author for a single copy of the final .pdf)
Grotjahn 2007b (10.5 Mb pdf file, preprint) Comparison: NCEP/DOE AMIP II versus ERA-40. Under revision for: Dynamics of Atmospheres and Oceans, Fall, 2007
Grotjahn and Faure 2008 (9.4 Mb pdf file, preprint, accepted by Weather and Forecasting) Forecasting Extraordinary weather events affecting southern Sacramento Valley
Pan, Grotjahn and Tribbia 2009 (4.4 Mb pdf file, galley proof, appeared in Climate Dynamics) Sources of CAM3 temperature bias during northern winter from diagnostic study of the temperature bias equation.

Publications in progress:

Grotjahn, Pan, and Tribbia 2009 (5.0 Mb pdf file, preprint) Sources of CAM3 Bias During Northern Winter from Diagnostic Study of the Vorticity Bias Equation. Submitted to: Climate Dynamics (pending)
Grotjahn, Pan, and Tribbia 2009 (Same as above except 5.0 Mb doc file)
Grotjahn et al 2009 (0.0 Mb pdf file) Notes on using a linear stationary wave model for analysis of the bias. (coming soon)

Links to Data Files Webpages:

http://atm.ucdavis.edu/~lpan/doc3/ Created October 2007, this link is a directory of bias and forcing fields from the Branstator SWM. Resolution of most is R12 10 levels. Files are in .nc format to facilitate use with plotting software such as IDV, NCL, GRaDS, and Ferret. This address also includes plots of bias and forcing at the 5 levels in cylindrical equidistant (global) and N.Polar stereographic horizontal projections. The same information is also given on zonal and meridional cross sections.
http://atm.ucdavis.edu/~lpan/doc/ This is the former link from January 2007.

Other

2004-2005 (.06 Mb pdf file) Annual Report to NSF (April 2005)
2005-2006 (.5 Mb pdf file) Annual Report to NSF (April 2006)
2006-2007 (2.9 Mb pdf file) Annual Report to NSF (March 2007)
2007-2008 (3.7 Mb pdf file) Annual Report to NSF (March 2008)
2008-2009 (12.6 Mb pdf file) Annual Report to NSF (June 2009)

Page maintained by Richard Grotjahn email: grotjahn ATSYMBOL ucdavis DOT edu