Forecasting sea surface temperatures several months in advance is challenging. To give us insights into what might happen around Aotearoa New Zealand in the months to come, NIWA scientists have ...

A new NIWA-led study has found that climate change increased the amount of total rainfall during Cyclone Gabrielle by 10%. This additional rain fell during the most intense parts of the storm, ...

Anyone can use the tool and provide data by using the survey available in the NIWA Citizen Science app. The survey/app provides a standardized way to record data on the characteristics of instream ...

The development of updated national climate projections for Aotearoa New Zealand was completed in mid 2024. The data is available from the Ministry for the Environment (MfE) here. In the coming months ...

Benthic macroinvertebrates are small animals living among stones, logs, sediments and aquatic plants on the bottom of streams, rivers and lakes. Periphyton is algae that attaches or clings to plants ...

There are two methods to determine visual clarity in SHMAK; the clarity tube (or SHMAK tube) and the black disc method.

Temperature Temperatures were near average (±0.50°C of average) or above average (0.51-1.20°C above average) for most of the country, with isolated pockets of well above average (>1.20°C above average ...

Dr Sara Mikaloff-Fletcher is all concentration. She is standing in Rocket Lab’s Penrose mission control centre, watching the final countdown for the launch of a 70m-tall Falcon 9 rocket from ...

Probabilities are assigned in three categories: above average, near average, and below average. Temperatures are about equally likely to be above average (50% chance) or near average (45% chance).

Subject to the User’s compliance with the terms of this Agreement and in consideration of the Charges, NIWA grants the User a non-exclusive, non-transferable licence to use the Data only for the ...

Subject to the User’s compliance with the terms of this Agreement, NIWA grants the User a non-exclusive, non-transferable licence to use the Data only for the Permitted Use during the Term as set out ...

The Barrier Assessment and Reporting Tool (BART) has been created to help river managers and asset owners understand connectivity in different catchments, and prioritise barriers within catchments for ...