Climate Update 76 - October 2005

October

September's climate

Global setting & climate outlook

Feature article

Feature article

Where can I grow grapes?

Example of a Suitability Index map (click to enlarge).

Searching for new land to grow your favourite crop typically means looking for localities with similar climate, soil, and topography to places where the crop is already grown successfully. This can be a time consuming and costly exercise.
New approaches to climate and soil modelling, funded by the Foundation for Research, Science & Technology, provide a desktop method to survey potentially suitable areas. The procedure doesn't eliminate the need to go out and investigate possible sites 'on the ground'.

September's climate

New Zealand climate in September 2005

Temperature (click to enlarge).

Rainfall (click to enlarge).

September temperatures were above average – the third consecutive month of warmer than normal conditions – in spite of a cold outbreak in the third week of the month.

October

A monthly newsletter from the National Climate Centre.
October 2005 – Number 76
September - warm conditions; lower than average rain and stream flows in most places.
Outlook for October to December - above average temperatures across New Zealand. Normal or above normal rain in the North Island and north of the South Island.
In this issue

September's climate
Global setting & climate outlook
Feature article - Where can I grow grapes?

Cover image
Kereru takes a break from shredding a magnolia flower.

Global setting & climate outlook

Global setting
El Niño-Southern Oscillation remains neutral

Difference from average global SST (click to enlarge).

Monthly SOI values (click to enlarge).

The tropical Pacific is in a neutral state (no El Niño or La Niña), and is expected to remain so through the rest of 2005.
The SOI was slightly positive in September (+0.3), and the 3-month July to September mean remained near zero (-0.2).
Sea surface temperatures (SST) around New Zealand

New Zealand SST (click to enlarge).

The New Zealand average SST anomaly was about +0.8 °C in September, a rise from August (+0.6 &