Atmospheric analysis

The climate of this area is greatly dependent on its exposure to weather systems from the Tasman Sea and the lie of the Southern Alps to the east.

Currently, the most reliable method to estimate the age of tuna is by examination of their otoliths or "ear bones"

Methane (CH4) is the second most important greenhouse gas after CO2 that is produced by human activities.

Annual Climate Summaries from 2000 to present.

Information about climate and weather and links to climate-related websites.

NIWA’s climate scientists can now confirm what you may have suspected. After carefully poring through more than a century’s worth of data, it has been officially determined that winter 2022 was Aotearoa New Zealand’s warmest and wettest on record.

The 3-panel Soil Moisture Deficit (SMD) map shows the historical soil moisture deficit at the date shown (left), the soil moisture deficit at the same time last year (middle) and the current soil moisture deficit (right).

NIWA collects a vast range of environmental information about New Zealand’s environment from the sky to the seafloor.

The New Zealand Palaeotsunami Database (Database) brings together all known information about tsunamis that occurred prior to written records.

Wood chips and plant material make pulp that is used to produce paper products.