[Keyword='climate indices']
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Monthly ENSO Precipitation Index (ESPI) Entry ID: NOAA_NWS_CPC_ESPI |
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Summary
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Abstract:
[Text Source: Curtis, S. and R. Adler, 2000: ENSO indexes based on patterns of satellite-derived precipitation. J. Climate, 13, 2786-2793 and http://trmm.gsfc.nasa.gov/ESPIsummary.html ] A summary of the GPCP precipitation-based ENSO indices (EI, LI, ESPI) The goal in constructing a precipitation-based measure of ENSO was to estimate the gradient of rainfall anomalies across the Pacific basin and ensure a good relationship with SST- and pressure-based indices. Areas were selected that represent the Maritime Continent (MC) (10° N – 10°S; 90° E – 150° E) and central to eastern Pacific (P) (10° N – 10° S; 160° E – 100° W). These regions capture the largest precipitation anomalies associated with the interannual variations of the Walker circulation and contain the largest correlations between GPCP and Nino 3.4 and SOI. Within P and MC the absolute magnitude of the largest correlation is over +0.6. Because of the spatially varying nature of rainfall, it was decided to use a moving block average which would capture the strongest zonal gradients within the equatorial Pacific. This procedure is unlike many fixed area average indices, and allows for a realistic meridional component of the precipitation gradient and migration of the ascending and descending branches of the Walker circulation. Additional Information: http://trmm.gsfc.nasa.gov/ESPIsummary.html |
Related URL
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Link:
GET DATA
Description: Access to monthly ESPI Precipitation index since 1979 Link: GET DATA Description: Access to monthly ESPI, LI and EI indices Link: GET DATA Description: ESPI rainfall anomalies and graphics Link: VIEW RELATED INFORMATION Description: Documentation on how indices were derived |
Geographic Coverage
| N: 10.0 | S: -10.0 | E: 150.0 | W: 90.0 |
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| N: 10.0 | S: -10.0 | E: -100.0 | W: 160.0 |
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Data Set Citation
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Dataset Originator/Creator:
Curtis, S. and R. Adler
Dataset Title: ENSO Precipitation Index (ESPI) Dataset Release Date: ongoing Dataset Release Place: Greenbelt, MD, USA Dataset Publisher: NASA TRMM Project Office Online Resource: http://trmm.gsfc.nasa.gov/ESPIsummary.html |
Temporal Coverage
| Start Date: 1979-01-01 |
Location Keywords
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OCEAN
> PACIFIC OCEAN
GEOGRAPHIC REGION > TROPICS |
Data Resolution
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Temporal Resolution:
monthly
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Science Keywords
| ATMOSPHERE >PRECIPITATION >PRECIPITATION AMOUNT [Definition] |
| ATMOSPHERE >PRECIPITATION >PRECIPITATION ANOMALIES [Definition] |
| ATMOSPHERE >PRECIPITATION >PRECIPITATION RATE [Definition] |
| ATMOSPHERE >PRECIPITATION >RAIN [Definition] |
| CLIMATE INDICATORS >ATMOSPHERIC/OCEAN INDICATORS >TELECONNECTIONS >EL NINO SOUTHERN OSCILLATION (ENSO) [Definition] |
| CLIMATE INDICATORS >ATMOSPHERIC/OCEAN INDICATORS >PRECIPITATION INDICES >ENSO PRECIPITATION INDEX [Definition] |
ISO Topic Category
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CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
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Platform
| TRMM >Tropical Rainfall Measuring Mission [Information] |
Instrument
| PR >TRMM Precipitation Radar [Information] |
Keywords
| ENSO Precipitation Index |
| ESPI |
| rainfall anomalies |
| El Nino |
| La Nina |
| climate index |
| climate indices |
| climate change |
Data Set Progress
| IN WORK |
Originating Center
| NASA/GSFC |
Data Center
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Tropical Rainfall Measuring Mission, Mesoscale Atmospheric Processes, Laboratory for Atmospheres, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA
[Information]
Data Center URL: http://trmm.gsfc.nasa.gov/
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Physical Sciences Division, Earth System Research Laboratory, OAR, NOAA, U.S. Department of Commerce
[Information]
Data Center URL: http://www.esrl.noaa.gov/psd/ Dataset ID: ESPI Index
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Distribution
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Distribution_Media:
online www
Distribution_Format: ascii Fees: none |
Personnel
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SCOTT, DR.
BRAUN Role: TECHNICAL CONTACT Phone: 301-614-6316 Email: Scott.A.Braun at nasa.gov Contact Address: TRMM Project Scientist NASA Goddard Space Flight Center 8800 Greenbelt Road City: Greenbelt Province or State: MD Postal Code: 20771 Country: USA |
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SCOTT
A.
RITZ Role: DIF AUTHOR Phone: 301-614-5126 Fax: 301-614-5268 Email: Scott.A.Ritz at nasa.gov Contact Address: NASA Goddard Space Flight Center Global Change Master Directory City: Greenbelt Province or State: Maryland Postal Code: 20771 Country: USA |
Publications/References
Curtis, S. and R. Adler (2000), ENSO indexes based on patterns of satellite-derived precipitation, J. Climate, 13, 2786-2793
Creation and Review Dates
DIF Creation Date:
2005-12-15
Last DIF Revision Date:
2011-04-06
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