Impacts of El Nino Observations Mechanisms for remote impacts.

Slides:



Advertisements
Similar presentations
Evolution of the El Niño : The Role of Intraseasonal to Interannual Time Scale Dynamics Michael J. McPhaden NOAA/PMEL Seattle, Washington CLIVAR.
Advertisements

Analysis of Eastern Indian Ocean Cold and Warm Events: The air-sea interaction under the Indian monsoon background Qin Zhang RSIS, Climate Prediction Center,
Section 5: Kelvin waves 1.Introduction 2.Shallow water theory 3.Observation 4.Representation in GCM 5.Summary.
Climatology Lecture 8 Richard Washington Variability of the General Circulation.
El Niño, La Niña and the Southern Oscillation
Chapter 7 Circulation of the Atmosphere The Atmosphere 9e Lutgens & Tarbuck Power Point by Michael C. LoPresto.
UCSB Climate Research Meeting Dept. of Geography ICESS- UCSB October 16, 2009 Earth Space Research Group Climate Variations and Impacts: Monthly Discussion.
Extratropical climate. Review of last lecture Mean state: The two basic regions of SST? Which region has stronger rainfall? What is the Walker circulation?
2. Natural Climate Variability
Pei-Yu Chueh 2010/7/1.  From 1948 to 2005 for DJF found decreases over the Arctic, Antarctic and North Pacific, an increase over the subtropical North.
The 1997/98 ENSO event. Multivariate ENSO Index Index is based on 6 parameters relevant to phase.
SSH anomalies from satellite. Observed annual mean state Circulation creates equatorial cold tongues eastern Pacific Trades -> Ocean upwelling along Equator.
UCSB Climate Research Meeting Dept. of Geography ICESS- UCSB October 16, 2009 Earth Space Research Group Climate Variations and Impacts: Monthly Discussion.
The 1997/98 ENSO event. Multivariate ENSO Index Index is based on 6 parameters relevant to phase.
The importance of clouds. The Global Climate System
2. Natural Climate Variability 2.1 Introduction 2.2 Interannual Variability 2.3 Decadal Variability 2.4 Climate Prediction 2.5 Variability of High Impact.
El Nino and La Nina An important atmospheric variation that has an average period of three to seven years. Goes between El Nino, Neutral, and La Nina (ENSO.
Planetary Scale Weather Regimes: ENSO (El Niño Southern Oscillation): A global teleconnection, strongest in the Pacific, between the tropical oceans and.
El Nino Southern Oscillation (ENSO)
Lesson 11: El Niño Southern Oscillation (ENSO) Physical Oceanography
Extreme Events and Climate Variability. Issues: Scientists are telling us that global warming means more extreme weather. Every year we seem to experience.
Seasonal outlook of the East Asian Summer in 2015 Motoaki Takekawa Tokyo Climate Center Japan Meteorological Agency May th FOCRAII 1.
Three cases: (1) La Nina event in 1989 (2) A strong El Nino in 1998 (3) A moderate El Nino in 1987 Three fields: (a) Surface temperatures and anomalies.
Question and Answer Session Related to the Weather photo: D. Martin Douglas K. Miller Professor and Chair Atmospheric Sciences Department UNC Asheville.
ENSO Prediction and Policy Why Predict ENSO? How do we predict ENSO? Why is it possible ? What information do predictions offer? What to do with this information?
Subtropical High-pressure Cells Westerlies Bermuda high Azores high Figure 6.14.
What Are the El Nino and La Nina?. Review of last lecture Tropical cyclone genesis: Western Pacific has the highest averaged number per year. 6 necessary.
CDC Cover. NOAA Lab roles in CCSP Strategic Plan for the U.S. Climate Change Science Program: Research Elements Element 3. Atmospheric Composition Aeronomy.
Water Year Outlook. Long Range Weather Forecast Use a combination of long term predictors –Phase of Pacific Decadal Oscillation (PDO) –Phase of Atlantic.
Building Community Resilience in the Face of Increased Vulnerability to Extreme Weather & Water Events Andy Bryant National Weather Service Portland, OR.
1 CUTTING-EDGE CLIMATE SCIENCE AND SERVICES Geoff Love.
ENSO impact to atmospheric circulation system for summer Motoaki Takekawa Tokyo Climate Center, Japan Meteorological Agency (JMA) 1.
1 Global Ocean Monitoring: Recent Evolution, Current Status, and Predictions Prepared by Climate Prediction Center, NCEP September 7, 2007
El Nino and La Nina opposite phases of the El Niño-Southern Oscillation (ENSO) cycle. The ENSO cycle describes the changes in temperature between the ocean.
Abnormal Weather October 22, Teleconnections Teleconnections: relationship between weather or climate patterns at two widely separated locations.
Oceanic Influences on Climate. Ocean currents redistribute heat Large scale currents are called gyres.
GEU 0027: Meteorology Lecture 10 Wind: Global Systems.
Southern Oscillation- Atmospheric component of ocean's El Niño. Oscillation in the distribution of high and low pressure systems across the equatorial.
1 Opposite phases of the Antarctic Oscillation and Relationships with Intraseasonal to Interannual Activity in the Tropics during the Austral Summer (submitted.
Material for Exam 2 starts HERE. Oceanic Currents Surface Currents –Cold = high latitude –Warm = low latitude –Gyres: circulate in which directions?
Section (ii) ENSO - Theory
Madden/Julian Oscillation: Recent Evolution, Current Status and Forecasts Update prepared by Climate Prediction Center / NCEP April 5, 2005.
Climate Variability in the Southeast NIDIS Southeast Pilot, Apalachicola Workshop Apalachicola, FL April 27, 2010 David F. Zierden Florida State Climatologist.
Lecture 9: Air-Sea Interactions EarthsClimate_Web_Chapter.pdfEarthsClimate_Web_Chapter.pdf, p ; Ch. 16, p ; Ch. 17, p
Anomalous Behavior Unit 3 Climate of Change InTeGrate Module Cynthia M. Fadem Earlham College Russian River Valley, CA, USA.
Winter Outlook for the Pacific Northwest: Winter 06/07 14 November 2006 Kirby Cook. NOAA/National Weather Service Acknowledgement: Climate Prediction Center.
ESSL Holland, CCSM Workshop 0606 Predicting the Earth System Across Scales: Both Ways Summary:Rationale Approach and Current Focus Improved Simulation.
Equatorial Atlantic Variability: Dynamics, ENSO Impact, and Implications for Model Development M. Latif 1, N. S. Keenlyside 2, and H. Ding 1 1 Leibniz.
El Niño and La Niña El Niño is characterized by unusually warm ocean temperatures in the Equatorial Pacific, as opposed to La Niña, which characterized.
Complication in Climate Change
Connecting observations with theoretical models
Daylength Local Mesoscale Winds Chinook Winds (Foehn) Loma, MT: January 15, 1972, the temperature rose from -54 to 49°F (-48 to 9°C), a 103°F (58°C)
Air-Sea Interactions The atmosphere and ocean form a coupled system, exchanging heat, momentum and water at the interface. Emmanuel, K. A. 1986: An air-sea.
El Niño, La Niña and the Southern Oscillation
El Nino Southern Oscillation
ENSO - Theory How does the phase of ENSO reverse?
The El Niño/ Southern Oscillation (ENSO) Cycle Lab
Dynamics of ENSO Complexity and Sensitivity
El Nino and La Nina An important atmospheric variation that has an average period of three to seven years. Goes between El Nino, Neutral, and La Nina (ENSO.
Climate Verses Weather
The Climate System TOPICS ENSO Impacts Seasonal Climate Forecasts
Oceanic Influences on Climate
The 1997/98 ENSO event.
Section (ii) ENSO - Theory
The 1997/98 ENSO event.
The 1997/98 ENSO event.
2.3.1(iii) Impacts of El Nino
Impacts of El Nino Observations Mechanisms for remote impacts.
Nonlinearity of atmospheric response
Oceanic Circulation and ENSO
Presentation transcript:

Impacts of El Nino Observations Mechanisms for remote impacts

Observations

Growth and Decay of El Nino

A closer look at impacts ENSO and CLIMATE Temperature and Precipitation Tropical Cyclones ENSO and SOCIETY Regional impacts

Mechanisms for remote impacts Latent heating associated with tropical precipitation anomalies excites waves in the atmosphere: –Atmospheric equatorial Kelvin and Rossby waves propagate zonally. Associated subsidence warms troposphere and suppresses precipitation –Rossby waves can also propagate into extratropics (especially in winter) causing large- scale circulation anomalies which impact weather. (Note that propagation requires a westerly mean flow and the relevant Rossby waves have an eastward group velocity)

Source: D. Neelin

Impacts on the North Atlantic Region El Nino – La Nina La Nina El Nino

Yearly average of Chlorophyll concentrations El Niño low La Niña high Impacts on marine ecosystems Source: A. Timmermann

El Nino Prediction

El Nino research issues Phase locking to seasonal cycle (onset and termination) What determines and limits the amplitude of El Nino? What controls the frequency of El Nino events? How will El Nino respond to anthropogenic climate change?

Feedback: Privacy Policy Feedback
Do Not Sell My Personal Information
About project: SlidePlayer Terms of Service

© 2024 SlidePlayer.com Inc. All rights reserved.