Recent NINO index values are available from the Bureau's NINO index monitoring graphs.
The Climate Prediction Center (CPC) at NOAA in the US keep a list on monthly NINO index values back to 1950 at their ftp site - these monthly NINO values are calculated in a different manner than those used here at the Bureau so will show some differences to the values listed on our pages.
Monthly SOI values back to 1876 are available from the BoM website.
Daily SOI values are published on the Queensland Longpaddock site, although they use a different period for the calculation of means and anomalies from that used at the Bureau.
Weekly IOD index values are available from the Bureau for the most recent 5 years. We do not maintain any other DMI datasets that go back further than this date. JAMSTEC and NOAA maintain a number of long-term DMI datasets.
The Southern Annular Mode (SAM, also known as the Antarctic Oscillation or AAO) is discussed in our technical seasonal summaries, published in the journal AMOJ, for the seasons in which it was an active influence. The CPC keep a long SAM data series.
Information on the subtropical ridge can be gleaned from the number of high/low pressure systems in a region and their strength (central pressure). This data is available from our climate change tracking pages.
Each data table page has one or more 'About' links (near the top of the page) that provide detailed information about the data. We recommend reading these pages.
Data that is displayed in a red colour and italics has not yet been quality controlled. There is always a lag between when data is received and when data is quality controlled due to the volume of data we manage.
Empty cells in data tables exist because that data is either not available, or has been flagged during the quality control process.
There is also a slight lag between the recording of data and when it appears on the website. This is due to the time it takes to ingest and upload through our systems.
Deciles break the data into 10 equal parts of 10% each. An observed monthly rainfall total in decile 10 means that the total is in the top 10% of all monthly observations, higher than at least 90% of previous monthly observations.
L and H are used to indicate the lowest-on-record and highest-on-record respectively, as well as using 1 to 10 for deciles. A monthly rainfall total reported as 'H' is the highest-on-record rainfall total. The observation is still in decile 10, although it's at the very top. The highest-on-record observation is also in the 100th percentile (breaking the data into 100 blocks instead of 10), and higher than all previous observations.
Similarly 'L' is the lowest-on-record, and is in the first percentile (lowest 1% of observations), which is in the first decile (decile 1).
More information on calculating deciles is available here: http://www.bom.gov.au/climate/glossary/deciles.shtml