EKMAN PUMPING VARIABILITY IN THE EQUATORIAL PACIFIC
Variation of Ekman pumping in Equatorial Pacific has been studied using surface wind velocity from NCEP/NCAR (National Centers for Environmental Prediction/National Centers for Atmospheric Research). It’s also used temperature from NOAA (National Oceanic and Atmospheric Administration) and ONI (Ocea...
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| Format: | Final Project |
| Language: | Indonesia |
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| Online Access: | https://digilib.itb.ac.id/gdl/view/33475 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Variation of Ekman pumping in Equatorial Pacific has been studied using surface wind velocity from NCEP/NCAR (National Centers for Environmental Prediction/National Centers for Atmospheric Research). It’s also used temperature from NOAA (National Oceanic and Atmospheric Administration) and ONI (Ocean Nino Index) in the period of 1996 - 2015 (20 years).
Data processing result show that Ekman pumping in the Equatorial Pacific (0.5°N - 0.5°S and 170°E - 110°W) varies by seasonal and interannual (El Niño and La Niña). The mean Ekman pumping has positive value between July to December with the intensity varies between 4.4x10-7 - 1.3x10-6 m s-1, corresponding with SST (Sea Surface Temperature) in the north and cause negative value in south. During El Niño and La Niña evidences, there is a time lag of one to three months between Ekman Pumping and SST anomalies. When trade wind becomes stronger, Ekman Pumping become stronger and there is a time lag of one to two months with zonal wind. |
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