| SOUTHERN OSCILLATION | OLR INDEX | EQUATORIAL ZONAL WIND INDEX | Summer Asian Monsoon OLR Index |
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| MONTH | SOI | DARWIN | TAHITI | OLR-PH | OLR-MC | OLR-DL | U200-IN | U200-CP | U850-WP | U850-CP | U850-EP | Activity | N-shift | W-shift |
| Dec 2022 | 1.8 | -1.6 | 2.1 | 1.0 | 1.0 | -1.1 | -0.9 | 1.5 | -1.3 | -1.2 | -0.1 | /// | /// | /// |
| Jan 2023 | 1.0 | -0.6 | 1.8 | 1.8 | 1.1 | -1.2 | -0.7 | 0.4 | -1.5 | -1.1 | 0.6 | /// | /// | /// |
| Feb 2023 | 1.0 | -1.5 | 0.8 | 0.8 | 1.3 | -0.9 | -0.5 | 1.7 | -0.6 | -1.2 | -0.1 | /// | /// | /// |
| Mar 2023 | -0.1 | 0.3 | 0.2 | -0.2 | 0.4 | -1.2 | 2.0 | -0.2 | -0.2 | -0.2 | 1.2 | /// | /// | /// |
| Apr 2023 | 0.3 | -0.9 | -0.4 | 0.4 | -0.2 | -0.5 | 1.0 | 0.9 | -0.3 | -0.4 | 0.4 | /// | /// | /// |
| May 2023 | -2.3 | 1.5 | -0.5 | 0.0 | 0.1 | 0.3 | 1.3 | 1.1 | 0.0 | -0.8 | 0.0 | -1.0 | -0.2 | -1.8 |
| Jun 2023 | 0.5 | -0.1 | 0.3 | -0.2 | -0.3 | 0.7 | 0.8 | -0.5 | -0.1 | -0.2 | 1.0 | -1.3 | -0.2 | -1.3 |
| Jul 2023 | -0.6 | 0.7 | 0.0 | 0.2 | 0.1 | 1.1 | 0.1 | -0.2 | -0.1 | -0.5 | 1.0 | -0.6 | -0.3 | -1.6 |
| Aug 2023 | -1.2 | 1.6 | 0.1 | -1.8 | -0.7 | 0.7 | 2.0 | -1.7 | 0.5 | 1.4 | 1.8 | -3.2 | 0.9 | -0.7 |
| Sep 2023 | -1.3 | 1.2 | -1.1 | -0.3 | -0.5 | 1.0 | -0.7 | -0.7 | 0.3 | 0.0 | 0.3 | 0.4 | -0.3 | 1.4 |
| Oct 2023 | -0.4 | 2.0 | 1.2 | -0.9 | -1.4 | 1.1 | 0.8 | -1.1 | 0.7 | 0.5 | 2.2 | -1.1 | 1.5 | 0.2 |
| Nov 2023 | -1.1 | 1.2 | -0.3 | -0.6 | -1.3 | 1.6 | -0.4 | -1.6 | 1.5 | 1.0 | 1.0 | /// | /// | /// |
| Dec 2023 | -0.4 | 0.8 | 0.1 | -1.2 | -1.8 | 1.3 | 0.9 | -1.2 | 0.9 | 1.0 | 1.0 | /// | /// | /// |
| DEFINITION, LOCATION, AREA |
TAHITI - DARWIN |
12.5ºS 131ºE |
17.5ºS 150ºW |
20-10ºN 110-140ºE |
5ºN-5ºS 110-135ºE |
5ºN-5ºS 170ºE-170ºW |
5ºN-5ºS 80-100ºE |
5ºN-5ºS 180-125ºW |
5ºN-5ºS 160ºE-175ºW |
5ºN-5ºS 170ºW-135ºW |
5ºN-5ºS 130-100ºW |
SAMOI (A) | SAMOI (N) | SAMOI (W) |
| SEA SURFACE TEMPERATURE and ANOMALY(ºC) | ||||||||||||||
| MONTH | IOBW | NINO.WEST | NINO.4 | NINO.3 | NINO.1+2 | |||||||||
| Dec 2022 | 27.97 | -0.04 | 29.71 | 0.54 | 27.7 | -0.9 | 24.3 | -0.9 | 22.3 | -0.6 | ||||
| Jan 2023 | 27.83 | -0.11 | 29.21 | 0.56 | 27.6 | -0.7 | 25.1 | -0.6 | 24.4 | -0.2 | ||||
| Feb 2023 | 27.98 | -0.18 | 28.96 | 0.54 | 27.5 | -0.7 | 26.3 | -0.1 | 27.1 | 0.9 | ||||
| Mar 2023 | 28.89 | 0.16 | 29.31 | 0.76 | 28.1 | -0.2 | 27.7 | 0.5 | 28.0 | 1.3 | ||||
| Apr 2023 | 29.57 | 0.33 | 29.74 | 0.76 | 28.9 | 0.2 | 28.1 | 0.5 | 28.6 | 2.9 | ||||
| May 2023 | 29.28 | 0.25 | 30.01 | 0.54 | 29.2 | 0.2 | 28.2 | 1.0 | 26.8 | 2.3 | ||||
| Jun 2023 | 28.54 | 0.39 | 29.81 | 0.14 | 29.6 | 0.6 | 27.9 | 1.3 | 26.1 | 2.9 | ||||
| Jul 2023 | 27.60 | 0.23 | 29.87 | 0.32 | 29.6 | 0.6 | 27.6 | 1.8 | 25.5 | 3.6 | ||||
| Aug 2023 | 27.61 | 0.58 | 29.70 | 0.26 | 29.8 | 1.0 | 27.3 | 2.2 | 24.6 | 3.8 | ||||
| Sep 2023 | 27.64 | 0.44 | 29.79 | 0.22 | 30.0 | 1.2 | 27.1 | 2.2 | 23.6 | 3.0 | ||||
| Oct 2023 | 28.13 | 0.45 | 30.02 | 0.38 | 30.1 | 1.3 | 27.2 | 2.2 | 23.7 | 2.7 | ||||
| Nov 2023 | 28.57 | 0.58 | 29.81 | 0.27 | 30.2 | 1.4 | 27.3 | 2.2 | 24.0 | 2.3 | ||||
| Dec 2023 | 28.77 | 0.76 | 29.61 | 0.44 | 30.0 | 1.4 | 27.4 | 2.2 | 24.3 | 1.4 | ||||
| DEFINITON, LOCATION, AREA |
20ºN-20ºS 40-100ºE |
15ºN-EQ 130-150ºE |
5ºN-5ºS 160ºE-150ºW |
5ºN-5ºS 150-90ºW |
EQ-10ºS 90-80ºW |
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