U.S. CLIVAR Atlantic Meeting

12-14 June 2001

NOAA-CIRES Climate Diagnostic Center,

David Skaggs Research Center, Room GC 402

325 Broadway, Boulder CO

AGENDA (as of 1 June 2001)

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7:30 A.M. Meeting Registration/Check-in

8:30 A.M. Welcome. Randy Dole, CDC Director

David Legler, US CLIVAR Office

Chairperson: Clara Deser

8:45 A.M. NOAA/AOML OBSERVATIONAL PROGRAMS IN THE

ATLANTIC, AND A PREVIEW OF THE SEPT. 2001

INTERNATIONAL CLIVAR TROPICAL ATLANTIC

WORKSHOP IN PARIS. Silvia Garzoli, AOML

9:20 A.M. TROPICAL ATLANTIC HEAT AND SALT CONTENT.

Raymond Schmitt, Dept. of Phys. Oceanog., Woods Hole.

9:40 A.M. SPACEBASED OCEAN SURFACE WIND VECTORS.

W. Timothy Liu, Wenqing Tang, JPL.

10:00 A.M. SEASONAL TO INTERANNUAL VARIABILITY OF THE

SURFACE CURRENTS IN THE TROPICAL ATLANTIC OCEAN

DURING 1993-2000. F. Bonjean, G. Lagerloef, Earth and Space

Research; A. J. Marino, MPO/RSMAS

10:20 A.M. Discussion

11:10 A.M. Session I: Continued

11:10 A.M. THE ASOF PROGRAM Bob Dickson, CEFAS, The Laboratory,

England

11:40 A.M. A WELL-VERIFIED, MULTI-PROXY RECONSTRUCTION

OF THE WINTER NAO INDEX SINCE AD 1400.

Ed Cook, Rosanne D Arrigo, LDEO; Michael Mann, Univ. of Virginia.

12:00 P.M. IMPACTS OF THE NAO ON THE ENERGY SECTOR IN SCANDINAVIA.

J. Cherry, H. Cullen, M Visbeck, LDEO

12:20 P.M. Discussion

Chairperson: John Chiang

2:00 P.M. RECENT STUDIES OF ATLANTIC CLIMATE VARIABILITY

AT NOAA/AOML. Chunzai Wang, David Enfield, AOML;

Alberto Mestas-Nunez, CIMAS, Univ. of Miama.

2:20 P.M. PRINCIPAL PATTERNS OF SUMMER RAINFALL VARIABILITY

OVER SOUTH AMERICA. Julia-Nogues Paegle , Univ. of Utah;

K. Mo, NCEP/NWS/NOAA.

2:40 P.M. INTERACTION BETWEEN AMAZON RAINFALL AND ATLANTIC

OCEAN. Rong Fu, Hui Wang, MongxuanMingxuan Chen, EAS, Georgia

Institute of Technology.

3:00 P.M. SURFACE VELOCITIES IN THE NORTH ATLANTIC DURING

DIFFERENT PHASES OF THE NAO. Maria Flatau, Lynne Talley,

and Pearn Niiler, Scripps Ins. of Oceanography.

3:20 P.M. Discussion

3:50 P.M. BREAK

4:10 P.M. Session II: Continued

4:10 P.M. CLIMATE AND THE TROPICAL ATLANTIC OCEAN --

LESSONS FROM THE REANALYSIS EFFORT. James Carton,

Gennady Chepurin, and SanyaSenya Grodsky, Univ. of Maryland.

4:30 P.M. REMOTE AND LOCAL FORCING MECHANISMS FOR

DECADAL VARIABILITY IN THE TROPICAL AND SUBTROPICAL

ATLANTIC OCEAN. Jiayan Yang and Terrence Joyce, Woods Hole.

4:50 P.M. Discussion

Food and refreshments provided

Tuesday Evening; 5:40 P.M.-8:00 P.M.

Wednesday Morning 10:00 A.M-10:50 A.M "Extended Break Session"

i. Poster dimensions can be up to 4' x 4'.

ii. Posters will be pinned to standing easels; pins will be available.

iii. There will be 4 posters per easel, sharing common themes if possible.

iv. When arriving, place your poster on the easel displaying your assigned

poster number.

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1. IMPACTS OF THE NAO ON PLANKTONIC ECOSYSTEMS:

EVIDENCE FROM AN OCEAN MODEL. J. Cherry

and M. Visbeck. LDEO.

2. ECOSYSTEM FEEDBACKS ON THE ZONAL AND MERIDIONAL

MODES OF VARIABILITY IN THE TROPICAL ATLANTIC.

R. Murtugudde, J. Christian, J. Beauchamp, A. Busalacchi, ESSIC.

3. THE ONGOING DROUGHT IN SOUTHWEST ASIA: ASSOCIATED LARGE-SCALE

CLIMATE VARIABILITY AND THE TROPICAL OCEANS. M Barlow, H. Cullen,

B. Lyon, IRI.

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4. NORTH ATLANTIC SUBPOLAR MODE WATER- A REVISED PARADIGM

FOR ITS CIRCULATION AND TRANSFORMATION. L. Talley, SIO; M

McCartney, WHOI.

5. A MODEL STUDY OF TEMPERATURE ANOMALY PROPOGATION FROM

THE SUBTROPICS TO TROPICS WITHIN THE SOUTH ATLANTIC

THERMOCLINE. A. Lazar, R. Murtugudde, A. Busalacchi, ESSIC.

6. VARIATIONS IN THE SUBDUCTION RATE OF SUBTROPICAL UNDERWATER

WITH THE NORTH ATLANTIC OSCILLATION. B. O'Connor, R. A. Fine, and

D. B. Olson, Univ of Miami

7. THE WARM WATER LIMB OF THE MERIDIONAL OVERTURNING

CIRCULATION IN THE NORTH ATLANTIC OCEAN AS DEPICTED

BY AN OGCM. L. Rothstein, M. Prater, H. Zhang, Y. Luo, Univ. of Rhode Is.

8. SUDDEN ARRIVAL OF LABORADOR SEA WATER ALONG THE

CONTINENTAL SLOPE AT 70° W. W. Smethie, Jr., LDEO; R. Pickart, WHOI.

9. RATES AND MECHANISMS OF WATER MASS TRANSFORMATION

IN THE LABRADOR SEA AS INFERRED FROM TRACER

OBSERVATIONS. S. Khatiwala, MIT.

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10. A STUDY OF THE ROLE OF OCEAN DYNAMICS IN THE OBSERVED

VARIABILITY OF ATMOSPHERIC HEAT TRANSPORT OVER THE

NORTH ATLANTIC SECTOR. A. Czaja, MIT-EAPS.

11. ON CONVECTION AND WATER MASS FORMATION IN THE NORDIC

SEA (1991 - 2000). J. Karstensen, P. Schlosser, LDEO; J. Blindheim, Bergen;

J. Bullister, PMEL; D. Wallace, IFM.

12. DISCUSSION POINTS ON EIGHTEEN DEGREE WATER (EDW), THE

N. ATLANTIC'S VERSION OF SUBTROPICAL MODE WATER (STMW).

W. Dewar, FSU; T. Joyce, WHOI; J. Marshall, MIT.

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13. DECADAL AND INTERANNUAL VARIATIONS IN THE TROPICAL SOUTH

ATLANTIC AND LINKAGES TO THE PACIFIC. K. Mo, NCEP; S.

Hakkinen, GSFC.

14. LIMITATIONS IN WESTERN AFRICAN CLIMATE PREDICTABILITY

RELATED TO LIMITATIONS IN TROPICAL ATLANTIC SST PREDICTABILITY.

L. Goddard, M. Neil Ward, IRI.

15. NORTH ATLANTIC WINTER STORM TRACK VARIABILITY AND

ASSOCIATIONS WITH MONTHLY REGIONAL CLIMATE VARIATIONS.

M. El Hamly, P. Lamb, CIMMS, Univ. of Oklahoma.

16 MECHANISMS THAT CAUSE INTERANNUAL VARIABILITY OF AFRICAN

EASTERLY WAVE ACTIVITY. Kerry Cook, Cornell.

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17. DECONSTRUCTING ATLANTIC ITCZ VARIABILITY: THE INFLUENCE

OF THE LOCAL CROSS EQUATORIAL SST GRADIENT, AND REMOTE

FORCING FROM THE EASTERN EQUATORIAL PACIFIC. J. Chiang,

JISAO Y. Kushnir, LDEO; A. Giannini, NCAR.

18 ATMOSPHERIC RESPONSE TO A CHANGE IN ATLANTIC CROSS-EQUATORIAL

SST GRADIENT: TROPICAL FEEDBACK AND EXTRATROPICAL

TELECONNECTION. Y. Okumura, S-P Xie, Univ Hawaii, A. Numaguti,

Y. Tanimoto, Hokkaido Univ.

19. TROPICAL ATLANTIC VARIABILITY AND THE US HURRICANE THREAT.

J. Elsner, FSU.

20. EVALUATION OF NCAR CLIMATE OCEAN MODEL HINDCASTS FOR

THE NORTH ATLANTIC OCEAN. H. Phillips, T. Joyce, WHOI.

21. SIMULATION OF THE ATLANTIC OCEAN RESPONSE TO NAO-RELATED

ATMOSPHERIC FORCING AT INTERANNUAL TO INTERDECADAL

PERIODS. G. Halliwell, MPO/RSMAS.

22. RESPONSE OF THE NORTH ATLANTIC WINTER CLIMATE TO GREENHOUSE

GAS, OZONE, SOLAR, AND VOLCANIC FORCING. R. Miller, D. Shindell, G.

Schmidt, and D. Rind, NASA-GISS.

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23. ATLANTIC REPEAT HYDROGRAPHY IN CLIVAR. T. Joyce, WHOI.

24. IN SITUIN-SITU METEOROLOGY AND AIR-SEA FLUXES IN THE NORTHWEST

TROPICAL ATLNATIC.ATLANTIC. A, Plueddemann, WHOI.

25. NEW DAILY AIR-SEA FLUX FIELDS FOR THE ATLNATICATLANTIC OCEAN.

L. Yu, B. Sun, R. Weller, WHOI.

26. AN INFORMED GUIDE TO CLIMATE DATA SETS. J. Hurrell, C. Deser,

A. Phillips, NCAR.

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27. TROPICAL ORIGINS FOR RECENT NORTH ATLANTIC CLIMATE CHANGE.

M. Hoerling, NOAA/CDC; J. Hurrell, NCAR.

28. THE PREDICTION OF TROPICAL ATLANTIC SSTS. C. Penland,

L. Matrisova;Matrosova; CDC; S. Bates. COLA; P. Chang; Texas A&M.

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8:00 A.M. Registration/Check-in continued

Chairperson: R. Saravanan

8:20 A.M. TROPICAL ATLANTIC VARIABILITY IN A COUPLED GCM.

Lixin Wu and Zhengyu Liu, CCR, Univ. of Wisconsin-Madison.

8:40 A.M. A SIMPLE MODEL OF TROPICAL ATLANTIC DECADAL

CLIMATE VARIBAILITY. Y. Kushnir, R. Seager, Lamont-Doherty; J. Chiang,

JISAO, Univ. of Washington.

9:00 A.M. THE INTERANNUAL VARIABILITY IN THE TROPICAL ATLANTIC

OCEAN SIMULATED BY A REGIONALLY COUPLED OCEAN-

ATMOSPHERE GCM. Bohua Huang, Ziqin Pan, Paul Schopf, COLA

9:20 A.M. A DIAGNOSTIC STUDY OF THE ROLE OF REMOTE FORCING IN

TROPICAL ATLANTIC VARIABILITY. P. van der Vaart, A. Czaja,

J. Marshall. MIT-EAPS.

9:40 A.M Discussion

10:50 A.M. Session III: Continued

10:50 A.M. RELATIONSHIP BETWEEN ZONAL AND MERIDIONAL MODES

IN THE TROPICAL ATLANTIC. Ragu Murtugudde, Joaquim

Ballabrera-Poy, James Beauchamp, and Antonio Busalacchi.

Earth System Science Interdiscipinary Center, Univ. of Maryland.

11:10 A.M. EQUATORIAL SST AND ITS RELATION TO THE SUBTROPICAL-

ATLANTIC CIRCULATION. Timoko Inui, PaoloaTomoko Inui, Paola Malanotte-Rizzoli,MIT;

Antonio Busalacchi, Earth System Science Interdiscipinary Center, Univ. of

Maryland

11:30 A.M. THE OCEANS ROLE IN TROPICAL ATLANTIC CLIMATE

VARIABILITY: ATMOSPHERIC RESPONSE TO OFF-EQUATORIAL

HEAT CONTENT ANOMALIES. Martin Visbeck and Naomi Naik,

Lamont-Doherty.

11:50 A.M. THE LOW-FREQUENCY VARIABILITY OF THE TROPICAL

ATLANTIC OCEAN. Sirpa Hakkinen, NASA GSFC; Kingse Mo,

NCEP/NWS/NOAA.

12:10 P.M. Discussion

Chairperson: Prashant Sardeshmukh

2:00 P.M. ESTIMATING THE POTENTIAL PREDICTABILITY ASSOCIATED WITH

TROPICAL ATLNATICATLANTIC SST ANOMALIES. R. Saravanan,

A. Giannini, NCAR; P. Chang, L. Ji, Texas A&M University.

2:20 P.M. A GCM STUDY OF THE ATMOSPHERIC RESPONSE TO SST

ANOMALIES OVER THE TROPICAL AND SUBTROPICAL SOUTH

ATLANTIC. Andrew Robertson. John Farrara, Carlos Mechoso, UCLA.

2:40 P.M. NORTH ATLANTIC SST FORCING OF THE NORTHERN HEMISPHERIC

EOF1. Shiling Peng, NOAA-CIRES Climate Diagnostics Center.

3:00 P.M. IS THE GULF STREAM RESPONSIBLE FOR EUROPE'S MILD

WINTERS. Richard Seager, Lamont-Doherty; David Battisti, Univ.

of Washington.

3:20 P.M. Discussion

4:10 P.M. Session IV: Continued

4:10 P.M. IMPACT OF SST ANOMALIES ON THE ATLANTIC TROPICAL STORM

ACTIVITY AND THE PREDICTION OF SAHEL SEASONAL RAINFALL.

W. Thiaw, K. Mo, NCEP/CPC.

4:30 P.M. THE INFLUENCE OF SAHEL RAINFALL ON THE SUMMER

CIRCULATION OF THE NORTH ATLANTIC. James Hurrell, Clara Deser,

NCAR; Chris Folland, Hadley Center, UK Met. Office.

4:50 P.M. DOWNSCALING THE ATLANTIC AND GLOBAL SST IMPACT ON

CIRCULATION AND RAINFALL IN WEST AND CENTRAL AFRICA:

SOME EXAMPLES. Neil Ward, Liqiang Sun, IRI/LDEO; Alphonso Kanga

Ousmane Ndiaye, African Centre for Meteorological Applications

for Development.

5:10 P.M. Discussion

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Chairperson: Marty Hoerling

8:30 A.M. TROPICAL TROPOSPHERIC TEMPERATURE VARIATIONS

CAUSED BY ENSO AND ITS INFLUENCE ON THE TROPICAL

ATLANTIC CLIMATE. John Chiang, Univ. of Washington,

Adam Sobel, Columbia University, Y. Kushnir, Lamont-Doherty.

8:50 A.M. THE ATMOSPHERIC BRIDGE: THE INFLUENCE OF ENSO ON

AIR-SEA INTERACTION IN THE TROPICAL ATLANTIC.

Michael Alexander and James Scott, NOAA-CIRES Climate

Diagnostics Center.

9:10 A.M. INTERANNUAL VARIABILITY IN LABRADOR SEA WATER

FORMATION AND EXPORT: HOW DOES IT CORRELATE TO THE

ATMOSPHERIC FORCING? F. Straneo and R. Pickart, WHOI.

9:30 A.M. RESPONSE TO NAO/AO FORCING IN THE ARCTIC OCEAN.

Gerd KrakmannKrahmann and Martin Visbeck, Lamont-Doherty.

9:50 A.M. ON OCEAN DYNAMICS IN MID-LATITUDE CLIMATE. William

Dewar, FSU.

10:10 A.M Discussion

11:00 A.M. THE NORTHERN ANNULAR MODE AND INTERNAL ROSSBY

WAVE REFLECTION: MECHANISMS FOR DYNAMICAL COUPLING

BETWEEN THE PACIFIC AND ATLANTIC SECTORS. Tim

Dunkerton, Northwest Research Associates, Washington.

11:20 A.M. A 'TILTED-TROUGH' MECHANISM FOR THE NORTH ATLANTIC/

ARCTIC OSCILLATION. F-F Jin, Univ. of Hawaii, M. Kimoto, M.

Watanabe, and N. Yasutomi, Univ. of Tokyo, Japan

11:40 A.M. CHANGES IN NAO FOLLOWING STRATOSPHERIC CIRCULATION

ANOMALIES. M. Baldwin, T. Dunkerton, Northwest Research Associates.

12:00 P.M. ON THE PREDICTABILITY OF THE CLIMATE IMPACTS OF THE

NORTHERN HEMISPHERE ANNULAR MODE ON MONTH-TO-

MONTH AND WINTER-TO-WINTER TIME SCALES. Dave Thompson,

CSU, Mark Baldwin, Northwest Research Associates, John Wallace,

Univ. of Washington.

12:20 P.M. Discussion

Chairperson: Michael McCartney

2:00 P.M. A CONNECTION BETWEEN TAV AND THE THERMOHALINE

CIRCULATION. R. Wajsowicz, Univ. of Maryland; A. Rosati and

M. Harrison, GFDL.

2:20 P.M. TRACKING THE TROPICAL EXPRESSION OF A SUBPOLAR

THERMOHALINE CIRCUALTION.ANOMALY. R. Curry, Woods Hole.

2:40 P.M. DECADAL VARIABILITY OF SUBTROPICAL MODE WATER

(STMW) AND THE GULF STREAM PATH. Terrence Joyce, WHOI

3:00 P.M. Discussion

3:50 P.M. Session VII: Continued

3:50 P.M. OBSERVED AND SIMULATED NORTH ATLANTIC MULTIDECADAL

VARIABILITY IN THE 20TH CENTURY. Thomas Delworth, GFDL.

4:10 P.M. IS THE CROSS-EQUATORIAL FLOW IN THE ATLANTIC

DRIVEN BY HIGH LATITUDE WINDS OR BY THE COOLING

OF THE NORTH ATLANTIC. D. Nof, Florida State Univ.

4:30 P.M. A SYNTHETIC DRIFTER ANALYSIS OF UPPER-LIMB MERIDIONAL

OVERTURNING CIRCULATION INTERIOR OCEAN PATHWAYS IN

THE TROPICAL/SUBTROPICAL ATLANTIC. George Halliwell,

MPO/RSMAS, Robert Weisberg, Univ. of S. Florida; Dennis Mayer

AOML.

4:50 P.M. INTERACTIONS BETWEEN THE THERMOHALINE CIRCULATION

AND TROPICAL ATLANTIC SST IN A COUPLED GCM. Ron Miller

and Xingjian Jiang, NASA/GISS.

5:10 P.M. Discussion