If you list all the historic rainfall totals for a particular month and for a specific location, rank these from lowest to highest, then divide the list into ten equal parts, you have identified the ten rainfall deciles for that month and for that location.

There are several definitions of drought, depending upon whether it is viewed as a hazard or a risk.

Most of this climate zone is characterised by cool coastal breezes, and absence of shelter from the unsettled weather that moves over the sea from the south and southwest.

A range of physical and chemical variables are measured in the NRWQN.

Compound specific stable isotope analysis techniques are an increasingly useful tool to address many ecological and environmental research questions.

The need to provide upstream passage facilities for ensuring the long term sustainability of migratory freshwater fish populations is now well recognised.

Stormwater poses risks to NZ’s urban streams & coastal waters, affecting ecological health & the cultural, social, & economic value of these environments.

Aotearoa’s main urban areas cover approximately 2% of total available land.

Explore our education and information section to find out about climate and climate change, weather, our atmosphere, estuaries and more.

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This lesson will explore the use of Māori environmental indicators [tohu] to anticipate local weather and climate conditions.