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Lawrence C. Gloeckler and Dr. Paul E. Roundy

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Sum of MJO and ER Wave Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves OLR (shaded between 7.5°S and 7.5°N; W m-2) and 300-hPa geopotential height anomaly (contoured between 40°N and 50°N; red=positive, blue=negative)

Sum of MJO and ER Wave Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves OLR (shaded between 7.5°S and 7.5°N; W m-2) and 300-hPa geopotential height anomaly (contoured between 40°N and 50°N; red=positive, blue=negative)

Simultaneous MJO and ER Wave Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves OLR (shaded between 7.5°S and 7.5°N; W m-2) and 300-hPa geopotential height anomaly (contoured between 40°N and 50°N; red=positive, blue=negative)

Simultaneous MJO and ER Wave Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves OLR (shaded between 7.5°S and 7.5°N; W m-2) and 300-hPa geopotential height anomaly (contoured between 40°N and 50°N; red=positive, blue=negative)

MJO Only Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves OLR (shaded between 7.5°S and 7.5°N; W m-2) and 300-hPa geopotential height anomaly (contoured between 40°N and 50°N; red=positive, blue=negative)

Simultaneous MJO and ER Wave Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves OLR (shaded between 7.5°S and 7.5°N; W m-2) and 300-hPa geopotential height anomaly (contoured between 40°N and 50°N; red=positive, blue=negative)

Modulation of the Extratropical Circulation by Combined Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves

Lawrence C. Gloeckler and Dr. Paul E. Roundy

Department of Atmospheric and Environmental Sciences, The University at Albany – SUNY

DAES Undergraduate Thesis Presentation

2 May 2011

Albany, NY

Overview Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves

MJO Convection

Equatorial Rossby Waves

Extratropical Rossby Waves

Background Information Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves

MJO Circulation Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves

MJO

200-hPa streamfunction (contoured every 10 × 105 m2 s−1), total wind (vectors in m s−1), and MJO-filtered Outgoing Longwave Radiation (OLR) anomaly (shaded < −16 W m−2).

Adapted from Fig. 2b of Kiladis et al. (2005).

MJO Circulation Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves

H

MJO

H

200-hPa streamfunction (contoured every 10 × 105 m2 s−1), total wind (vectors in m s−1), and MJO-filtered Outgoing Longwave Radiation (OLR) anomaly (shaded < −16 W m−2).

Adapted from Fig. 2b of Kiladis et al. (2005).

MJO Circulation Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves

H

L

MJO

L

H

300-hPa streamfunction (contoured every 10 × 105 m2 s−1), total wind (vectors in m s−1), and MJO-filtered Outgoing Longwave Radiation (OLR) anomaly (shaded < −16 W m−2).

Adapted from Fig. 2b of Kiladis et al. (2005).

ER Wave Development Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves

MJO

EQ

300-hPa

ER Wave Development Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves

H

MJO

EQ

H

300-hPa

ER Wave Development Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves

L

H

MJO

EQ

H

L

300-hPa

ER Wave Development Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves

H

L

H

MJO

EQ

H

H

L

300-hPa

ER Wave Development Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves

H

L

H

Background Flow

MJO

EQ

Background Flow

H

H

L

300-hPa

ER Wave Development Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves

H

L

H

L

MJO

EQ

L

H

H

L

300-hPa

ER Wave Development Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves

H

L

H

L

MJO

EQ

L

H

H

L

300-hPa

Data and Methodology Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves

Analyzed satellite-derived OLR data and NCEP—NCAR 40-year reanalysis data pertaining to 300-hPa geopotential height and wind anomalies

Identified set of dates during NH winter (1 Nov–31 Mar) when MJO was located over Maritime Continent

Position over Maritime Continent consistent with RMM Phase 4

Data and Methodology Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves

Identified longitude where ER wave crossing occurred most frequently for RMM Phase 4

Developed set of dates in which ER waves crossed identified longitude

Results: Hovmöllers Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves

MJO Only Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves

RMM Phase 4

OLR (shaded between 7.5°S and 7.5°N; W m-2) and 300-hPa geopotential height anomaly (contoured between 40°N and 50°N; red=positive, blue=negative)

MJO Only Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves

RMM Phase 4

OLR (shaded between 7.5°S and 7.5°N; W m-2) and 300-hPa geopotential height anomaly (contoured between 40°N and 50°N; red=positive, blue=negative)

MJO Only Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves

RMM Phase 4

OLR (shaded between 7.5°S and 7.5°N; W m-2) and 300-hPa geopotential height anomaly (contoured between 40°N and 50°N; red=positive, blue=negative)

ER Wave Only Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves OLR (shaded between 7.5°S and 7.5°N; W m-2) and 300-hPa geopotential height anomaly (contoured between 40°N and 50°N; red=positive, blue=negative)

RMM Phase 4, ER Base Lon 155E

ER Wave Only Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves OLR (shaded between 7.5°S and 7.5°N; W m-2) and 300-hPa geopotential height anomaly (contoured between 40°N and 50°N; red=positive, blue=negative)

RMM Phase 4, ER Base Lon 155E

ER Wave Only Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves OLR (shaded between 7.5°S and 7.5°N; W m-2) and 300-hPa geopotential height anomaly (contoured between 40°N and 50°N; red=positive, blue=negative)

RMM Phase 4, ER Base Lon 155E

Sum of MJO and ER Wave Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves OLR (shaded between 7.5°S and 7.5°N; W m-2) and 300-hPa geopotential height anomaly (contoured between 40°N and 50°N; red=positive, blue=negative)

RMM Phase 4, ER Base Lon 155E

Sum of MJO and ER Wave Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves OLR (shaded between 7.5°S and 7.5°N; W m-2) and 300-hPa geopotential height anomaly (contoured between 40°N and 50°N; red=positive, blue=negative)

RMM Phase 4, ER Base Lon 155E

Sum of MJO and ER Wave Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves OLR (shaded between 7.5°S and 7.5°N; W m-2) and 300-hPa geopotential height anomaly (contoured between 40°N and 50°N; red=positive, blue=negative)

RMM Phase 4, ER Base Lon 155E

RMM Phase 4, ER Base Lon 155E

RMM Phase 4, ER Base Lon 155E

Simultaneous MJO and ER Wave Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves OLR (shaded between 7.5°S and 7.5°N; W m-2) and 300-hPa geopotential height anomaly (contoured between 40°N and 50°N; red=positive, blue=negative)

RMM Phase 4, ER Base Lon 155E

Simultaneous MJO and ER Wave Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves OLR (shaded between 7.5°S and 7.5°N; W m-2) and 300-hPa geopotential height anomaly (contoured between 40°N and 50°N; red=positive, blue=negative)

RMM Phase 4, ER Base Lon 155E

Simultaneous MJO and ER Wave Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves OLR (shaded between 7.5°S and 7.5°N; W m-2) and 300-hPa geopotential height anomaly (contoured between 40°N and 50°N; red=positive, blue=negative)

RMM Phase 4, ER Base Lon 155E

RMM Phase 4, ER Base Lon 155E

RMM Phase 4, ER Base Lon 155E

RMM Phase 4

RMM Phase 4, ER Base Lon 155E

Significance Test Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves

- Randomly selected a list of dates associated with RMM phase 4 equal to number of ER wave events counted at identified base point
- Developed composite MJO with same number of degrees of freedom associated with combined composite

- Generated composite for random dates and repeated 1,000 times
- Compared composite result to composite generated by randomly selecting ER wave events during RMM phase 4

Significance Test Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves

- Determined mean amplitude of random MJO composite is approximately one half mean amplitude of simultaneous composite between 40°N and 50°N
- Two distributions demonstrated mean amplitude differences significantly larger than zero at 95% confidence level

Results: Composites Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves

MJO Only Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves

OLR, 300-hPa Height and Wind Anomaly, Lag = –5 days, RMM Phase 4

Positive 300-hPa height anomaly (20 dam intervals)

Negative 300-hPa height anomaly (20 dam intervals)

u/v wind anomaly (magnitude exceeding ± 2 m s-1)

MJO Only Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves

OLR, 300-hPa Height and Wind Anomaly, Lag = –4 days, RMM Phase 4

Positive 300-hPa height anomaly (20 dam intervals)

Negative 300-hPa height anomaly (20 dam intervals)

u/v wind anomaly (magnitude exceeding ± 2 m s-1)

MJO Only Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves

OLR, 300-hPa Height and Wind Anomaly, Lag = –3 days, RMM Phase 4

Positive 300-hPa height anomaly (20 dam intervals)

Negative 300-hPa height anomaly (20 dam intervals)

u/v wind anomaly (magnitude exceeding ± 2 m s-1)

MJO Only Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves

OLR, 300-hPa Height and Wind Anomaly, Lag = –2 days, RMM Phase 4

Positive 300-hPa height anomaly (20 dam intervals)

Negative 300-hPa height anomaly (20 dam intervals)

u/v wind anomaly (magnitude exceeding ± 2 m s-1)

MJO Only Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves

OLR, 300-hPa Height and Wind Anomaly, Lag = –1 day, RMM Phase 4

Positive 300-hPa height anomaly (20 dam intervals)

Negative 300-hPa height anomaly (20 dam intervals)

u/v wind anomaly (magnitude exceeding ± 2 m s-1)

MJO Only Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves

OLR, 300-hPa Height and Wind Anomaly, Lag = 0 days, RMM Phase 4

Positive 300-hPa height anomaly (20 dam intervals)

Negative 300-hPa height anomaly (20 dam intervals)

u/v wind anomaly (magnitude exceeding ± 2 m s-1)

MJO Only Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves

OLR, 300-hPa Height and Wind Anomaly, Lag = 1 day, RMM Phase 4

OLR, 300-hPa Height and Wind Anomaly, Lag = 1 days, RMM Phase 4

Positive 300-hPa height anomaly (20 dam intervals)

Negative 300-hPa height anomaly (20 dam intervals)

u/v wind anomaly (magnitude exceeding ± 2 m s-1)

MJO Only Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves

OLR, 300-hPa Height and Wind Anomaly, Lag = 2 days, RMM Phase 4

Positive 300-hPa height anomaly (20 dam intervals)

Negative 300-hPa height anomaly (20 dam intervals)

u/v wind anomaly (magnitude exceeding ± 2 m s-1)

MJO Only Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves

OLR, 300-hPa Height and Wind Anomaly, Lag = 3 days, RMM Phase 4

Positive 300-hPa height anomaly (20 dam intervals)

Negative 300-hPa height anomaly (20 dam intervals)

u/v wind anomaly (magnitude exceeding ± 2 m s-1)

MJO Only Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves

OLR, 300-hPa Height and Wind Anomaly, Lag = 4 days, RMM Phase 4

Positive 300-hPa height anomaly (20 dam intervals)

Negative 300-hPa height anomaly (20 dam intervals)

u/v wind anomaly (magnitude exceeding ± 2 m s-1)

MJO Only Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves

OLR, 300-hPa Height and Wind Anomaly, Lag = 5 days, RMM Phase 4

Positive 300-hPa height anomaly (20 dam intervals)

Negative 300-hPa height anomaly (20 dam intervals)

u/v wind anomaly (magnitude exceeding ± 2 m s-1)

ER Wave Only Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves

OLR, 300-hPa Height and Wind Anomaly, Lag = –5 days, ER Base Lon 155E

Positive 300-hPa height anomaly (20 dam intervals)

Negative 300-hPa height anomaly (20 dam intervals)

u/v wind anomaly (magnitude exceeding ± 1 m s-1)

ER Wave Only Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves

OLR, 300-hPa Height and Wind Anomaly, Lag = –5 days, ER Base Lon 155E

Positive 300-hPa height anomaly (20 dam intervals)

Negative 300-hPa height anomaly (20 dam intervals)

u/v wind anomaly (magnitude exceeding ± 1 m s-1)

ER Wave Only Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves

OLR, 300-hPa Height and Wind Anomaly, Lag = –5 days, ER Base Lon 155E

Positive 300-hPa height anomaly (20 dam intervals)

Negative 300-hPa height anomaly (20 dam intervals)

u/v wind anomaly (magnitude exceeding ± 1 m s-1)

ER Wave Only Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves

OLR, 300-hPa Height and Wind Anomaly, Lag = –4 days, ER Base Lon 155E

Positive 300-hPa height anomaly (20 dam intervals)

Negative 300-hPa height anomaly (20 dam intervals)

u/v wind anomaly (magnitude exceeding ± 1 m s-1)

ER Wave Only Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves

OLR, 300-hPa Height and Wind Anomaly, Lag = –3 days, ER Base Lon 155E

Positive 300-hPa height anomaly (20 dam intervals)

Negative 300-hPa height anomaly (20 dam intervals)

u/v wind anomaly (magnitude exceeding ± 1 m s-1)

ER Wave Only Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves

OLR, 300-hPa Height and Wind Anomaly, Lag = –2 days, ER Base Lon 155E

Positive 300-hPa height anomaly (20 dam intervals)

Negative 300-hPa height anomaly (20 dam intervals)

u/v wind anomaly (magnitude exceeding ± 1 m s-1)

ER Wave Only Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves

OLR, 300-hPa Height and Wind Anomaly, Lag = –1 day, ER Base Lon 155E

Positive 300-hPa height anomaly (20 dam intervals)

Negative 300-hPa height anomaly (20 dam intervals)

u/v wind anomaly (magnitude exceeding ± 1 m s-1)

ER Wave Only Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves

OLR, 300-hPa Height and Wind Anomaly, Lag = 0 days, ER Base Lon 155E

Positive 300-hPa height anomaly (20 dam intervals)

Negative 300-hPa height anomaly (20 dam intervals)

u/v wind anomaly (magnitude exceeding ± 1 m s-1)

ER Wave Only Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves

OLR, 300-hPa Height and Wind Anomaly, Lag = 1 day, ER Base Lon 155E

Positive 300-hPa height anomaly (20 dam intervals)

Negative 300-hPa height anomaly (20 dam intervals)

u/v wind anomaly (magnitude exceeding ± 1 m s-1)

ER Wave Only Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves

OLR, 300-hPa Height and Wind Anomaly, Lag = 2 days, ER Base Lon 155E

Positive 300-hPa height anomaly (20 dam intervals)

Negative 300-hPa height anomaly (20 dam intervals)

u/v wind anomaly (magnitude exceeding ± 1 m s-1)

ER Wave Only Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves

OLR, 300-hPa Height and Wind Anomaly, Lag = 3 days, ER Base Lon 155E

Positive 300-hPa height anomaly (20 dam intervals)

Negative 300-hPa height anomaly (20 dam intervals)

u/v wind anomaly (magnitude exceeding ± 1 m s-1)

ER Wave Only Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves

OLR, 300-hPa Height and Wind Anomaly, Lag = 4 days, ER Base Lon 155E

Positive 300-hPa height anomaly (20 dam intervals)

Negative 300-hPa height anomaly (20 dam intervals)

u/v wind anomaly (magnitude exceeding ± 1 m s-1)

ER Wave Only Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves

OLR, 300-hPa Height and Wind Anomaly, Lag = 5 days, ER Base Lon 155E

Positive 300-hPa height anomaly (20 dam intervals)

Negative 300-hPa height anomaly (20 dam intervals)

u/v wind anomaly (magnitude exceeding ± 1 m s-1)

Simultaneous MJO/ER Wave Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves

OLR, 300-hPa Height and Wind Anomaly, Lag = –5 days, RMM Phase 4, ER Base Lon 155E

Positive 300-hPa height anomaly (20 dam intervals)

Negative 300-hPa height anomaly (20 dam intervals)

u/v wind anomaly (magnitude exceeding ± 2 m s-1)

Simultaneous MJO/ER Wave Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves

OLR, 300-hPa Height and Wind Anomaly, Lag = –4 days, RMM Phase 4, ER Base Lon 155E

Positive 300-hPa height anomaly (20 dam intervals)

Negative 300-hPa height anomaly (20 dam intervals)

u/v wind anomaly (magnitude exceeding ± 2 m s-1)

Simultaneous MJO/ER Wave Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves

OLR, 300-hPa Height and Wind Anomaly, Lag = –3 days, RMM Phase 4, ER Base Lon 155E

Positive 300-hPa height anomaly (20 dam intervals)

Negative 300-hPa height anomaly (20 dam intervals)

u/v wind anomaly (magnitude exceeding ± 2 m s-1)

Simultaneous MJO/ER Wave Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves

OLR, 300-hPa Height and Wind Anomaly, Lag = –2 days, RMM Phase 4, ER Base Lon 155E

Positive 300-hPa height anomaly (20 dam intervals)

Negative 300-hPa height anomaly (20 dam intervals)

u/v wind anomaly (magnitude exceeding ± 2 m s-1)

Simultaneous MJO/ER Wave Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves

OLR, 300-hPa Height and Wind Anomaly, Lag = –1 day, RMM Phase 4, ER Base Lon 155E

Positive 300-hPa height anomaly (20 dam intervals)

Negative 300-hPa height anomaly (20 dam intervals)

u/v wind anomaly (magnitude exceeding ± 2 m s-1)

Simultaneous MJO/ER Wave Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves

OLR, 300-hPa Height and Wind Anomaly, Lag = 0 days, RMM Phase 4, ER Base Lon 155E

Positive 300-hPa height anomaly (20 dam intervals)

Negative 300-hPa height anomaly (20 dam intervals)

u/v wind anomaly (magnitude exceeding ± 2 m s-1)

Simultaneous MJO/ER Wave Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves

OLR, 300-hPa Height and Wind Anomaly, Lag = 1 day, RMM Phase 4, ER Base Lon 155E

Positive 300-hPa height anomaly (20 dam intervals)

Negative 300-hPa height anomaly (20 dam intervals)

u/v wind anomaly (magnitude exceeding ± 2 m s-1)

Simultaneous MJO/ER Wave Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves

OLR, 300-hPa Height and Wind Anomaly, Lag = 2 days, RMM Phase 4, ER Base Lon 155E

Positive 300-hPa height anomaly (20 dam intervals)

Negative 300-hPa height anomaly (20 dam intervals)

u/v wind anomaly (magnitude exceeding ± 2 m s-1)

Simultaneous MJO/ER Wave Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves

OLR, 300-hPa Height and Wind Anomaly, Lag = 3 days, RMM Phase 4, ER Base Lon 155E

Positive 300-hPa height anomaly (20 dam intervals)

Negative 300-hPa height anomaly (20 dam intervals)

u/v wind anomaly (magnitude exceeding ± 2 m s-1)

Simultaneous MJO/ER Wave Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves

OLR, 300-hPa Height and Wind Anomaly, Lag = 4 days, RMM Phase 4, ER Base Lon 155E

Positive 300-hPa height anomaly (20 dam intervals)

Negative 300-hPa height anomaly (20 dam intervals)

u/v wind anomaly (magnitude exceeding ± 2 m s-1)

Simultaneous MJO/ER Wave Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves

OLR, 300-hPa Height and Wind Anomaly, Lag = 5 days, RMM Phase 4, ER Base Lon 155E

Positive 300-hPa height anomaly (20 dam intervals)

Negative 300-hPa height anomaly (20 dam intervals)

u/v wind anomaly (magnitude exceeding ± 2 m s-1)

Summary Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves

MJO Convection

Equatorial Rossby Waves

Extratropical Rossby Waves

The Grand Conclusion Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves

- Simultaneous assessment of MJO and ER wave events yields more information about extratropical circulation than can be obtained from either field alone, or from simple linear combination of two fields
- ER wave state during particular MJO phase might yield better empirical prediction of following global atmospheric circulation

Acknowledgments Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves

- A special thank you to:
- Dr. Paul Roundy for lending his time and expertise to helping me develop and analyze my research problem
- Kyle MacRitchie for allowing me to use several of his MATLAB scripts, and for helping me understand the many facets of MATLAB

Thank you! Activity of the Madden–Julian Oscillation and Equatorial Rossby Waves

- Lawrence C. Gloeckler
Department of Atmospheric and Environmental Sciences

University at Albany – SUNY

email: [email protected]

QUESTIONS?

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