Studies of Selected EWEs:

Selected EWEs from Sacramento Criteria

Links to Composite/Bootstrap Significance Maps

1. Hardest Freezes
2. Hottest Heat Waves (onset)
3. End of Heat Wave
4. Heaviest Precipiation
5. Longest Duration Fogs

Publications and Presentations

Publications (Only those related to extremes listed here)

Link to a more comprehensive list of publications.

1. Grotjahn & Faure, 2008 (4.7 Mb pdf file) copy of the article in Weather Analysis and Forecasting
2. Grotjahn, 2011 (2.0 Mb pdf file) copy of the article in Climate Dynamics describing a pilot project relating extreme hot surface max temperatures over the California Central Valley to the upper level large scale flow. It also has additional interpretation of how extreme heat develops there, with the 2006 event as an example.
3. Grotjahn 2013 (1.2 Mb pdf file, preprint from Climate Dynamics DOI: TBA. With title: Ability of CCSM4 to Simulate California Extreme Heat Conditions from Evaluating Simulations of the Associated Large Scale Upper Air Pattern. It applies methodology from Grotjahn 2011 to the CCSM4, comparing the meteorological patterns from observations with those from CCSM4. It also discusses topographic problems with comparing CCSM4 surface temperatures to observed distributions. DOI: 10.1007/s00382-013-1668-1
   Springer link to the online article (available to Springer subscribers)
4. Katz and Grotjahn 2014 (0.5 Mb pdf file, excerpt from US CLIVAR Variations volume 12 (1). Summary of work on California Central Valley heat waves, and the Circulation Index from Grotjahn (2011): Extreme value statistics.
5. Grotjahn 2015c (1.4 Mb pdf file, preprint from the book Dynamics and Predictability of Global and Regional High-Impact Weather and Climate Events. (in press). Summary of work on California Central Valley heat waves: LSMPs from large scale upper air data (reanalysis and CCSM4). It has additional calculations and interpretation of how extreme heat is simulated to occur in two future climate scenarios.
6. Grotjahn et al., 2015 (3.6 Mb pdf file), summary of current knowledge on statistical tools to identify and analyse hot and cold extremes LSMPs, synoptic and dynamic knowledge of LSMPs and their evolution, modeling efforts and trends, and research questions.(Open source paid) In Climate Dynamics, DOI: 10.1007/s00382-015-2638-6
7. Lee and Grotjahn, 2015 (PREPRINT) California Heat waves Form Two Ways. describes how the onset of California heat waves is reach by two different patterns of weather.
8. Grotjahn and Lee, 2015 (PREPRINT) Since California heat waves form two ways, this paper describes how the differences vary between 3 reanalyses and how well these 2 types are simulated by 14 CMIP5 models. (3.5MB file)

Presentations
1. Grotjahn, 2009 (1.0 Mb pdf file) pdf of talk at 2009 IAMAS meeting MOCA-09 in Montreal Canada
2. Grotjahn, 2009 (1.6 Mb pdf file) pdf of talk at NOAA CDW meeting in Monterey CA This talk improves greatly on the MOCA-09 presentation.
3. Grotjahn, 2010 (4.5 Mb pdf file) pdf of talk summer presentations given at Exeter England, Paris France, and Saclay France This talk gives an overview on California CAOs and Hottest days, with emphasis on the latter. It also gives a preview of the later publication Grotjahn (2010, submitted to CD)
4. Grotjahn, 2011 (1.7 Mb pdf file) pdf of talk given at US CLIVAR researcher colloquium on the Statistical Assessment of Extreme Weather Phenomena under Climate Change in Boulder Colorado.
5. Grotjahn, 2011 (3.3 Mb pdf file) pdf of poster presented at CESM Workshop in Breckenridge Colorado.
6. Grotjahn, 2011 (5.6 Mb pdf file) pdf of talk given at 2011 IUGG meeting in Melbourne Australia
7. Grotjahn, 2012 (4.3 Mb pdf file) pdf of poster presented at CESM Workshop in Breckenridge Colorado.
8. Grotjahn, 2012 (6.7 Mb pdf file) pdf of talk given at 2012 ICDM workshop on Dynamics and Predictability of High-impact Weather and Climate Events in Kunming China
9. Grotjahn, 2013 (4.7 Mb pdf file) pdf of poster presented at CESM Workshop in Breckenridge Colorado.
10. Grotjahn, 2013 (4.2 Mb pdf file) pdf of talk given at 2013 US CLIVAR Workshop in Berkeley
11. Grotjahn, 2013 (3.2 Mb pdf file) pdf of talk given at 2013 IAMAS meeting in Davos Switzerland
12. Grotjahn, Lee, and Zhang, 2014 (7.6 Mb pdf file) pdf of poster presented at CESM Workshop in Breckenridge Colorado.
13. Lee and Grotjahn, 2014 (2.9 Mb pdf file) pdf of poster presented at 2014 AGU in San Francisco California.
14. Grotjahn and Lee, 2014 (2.8 Mb pdf file) pdf of poster presented at 2014 AGU in San Francisco California.
15. Grotjahn and Lee, 2015 (5.4 Mb pdf file) pdf of talk given at 2015 IUGG meeting in Prague Czech Republic
16. Lee and Grotjahn, 2015 (6.0 Mb pdf file) pdf of poster given at 2015 IUGG meeting in Prague Czech Republic
17. Kuswanto, et al., 2015 (0.9 Mb pdf file) pdf of poster given at 2015 IUGG meeting in Prague Czech Republic

US CLIVAR Extremes Working Group Workshop
link: August 2013, Berkeley California

• Workshop Final Report Grotjahn et al., 2014 (8.9 Mb pdf file) The final report on the US CLIVAR workshop on Extremes held in August 2013 in Berkeley. The report summarizes areas of active and recommended areas of research in topical areas of: data, statistical procedures, dynamical and synoptic understanding, and modeling.

Documentation

Research with Ghislain Faure (Sacramento EWEs)
1. Technical Report on the methodology (1.6 Mb pdf file) -- no appendices.
2. Appendices for the Technical Report (6.4 Mb pdf file) -- appendices only (many figures, ferret scripts, event dates, etc.
3. Grotjahn & Faure, 2008 (9.4 Mb pdf file) Preprint of article accepted by Weather Analysis and Forecasting
4. Grotjahn & Faure, 2008 (5.9 Mb pdf file) Galley proof of article in Weather Analysis and Forecasting
Research with Brooke Bachmann (Extent of Sacramento Extraordinary Heat Waves)
1. MS Thesis: Introduction & Methods (0.3 Mb pdf file) 32 pages.
2. MS Thesis: Results, Conclusions, & References (0.8 Mb pdf file) 40 pages.
3. MS Thesis: Appendices A & B (results) (1.7 Mb pdf file) 32 pages.
4. MS Thesis: Code (0.2 Mb pdf file) 59 pages.
5. FULL MS THESIS (3.0 Mb pdf file) 163 pages.

Research with Aude Valade (Evaluation of the simulation of the 2006 California heat wave by WRF using satellite and ground-based observations)
1. MS Thesis Caution! large file (40.5 Mb pdf file) 93 pages.
Research with Yun-Young Lee Synoptic and Dynamic Analyses of California Central Valley (CV) heat waves
1. WAF time sequence prior to CV heat waves for two clusters of events.
Research with Marielle Pinheiro
1. Primer on Extreme Statistics methodology. This work in progress provides an introduction to some techniques for extreme value statistics. 22 September 2015
Research with Rui Zhang
1. Masters Theis by Rui Zhang. December 2016

Programs
1. Directory for programs provided by Dr. Erool Palipane containing files of his .ncl and .R programs used to produce figures in Palipane and Grotjahn.
2. Readme file provided by Dr. Palipane on how to use his programs.

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Data
1. Central Valley directory containing files of observed max/min temperature data from a few NCDC stations.
2. Link to UC IPM website from where surface observation data at many stations in California can be obtained.

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