Seen a stunning sunrise or sunset lately? The Tongan volcano may be the cause

Seen a stunning sunrise or sunset lately? The Tongan volcano may be the cause

To understand these sightings, the forecasting team contacted their colleagues at the Lauder Atmospheric Research Station in Central Otago, who confirmed that their ground-based LIDAR (Light Detection and Ranging) instrument has been detecting unusual spikes in aerosols in the stratosphere, at around 20-25 kilometres above New Zealand.

NIWA scientist throws light on the Red Zone

NIWA scientist throws light on the Red Zone

“LED lights come in different colour temperatures so by changing the tones used in the street lights next to waterways, or by dimming them, we are hoping to find out what the ecological gains might be versus the energy costs.” Colour and direction effects on insect behaviour For several months, as the LED conversion has been taking place, Dr Greenwood has been taking photos of Christchurch from the Port Hills.

NIWA scientist throws light on the Red Zone

NIWA scientist throws light on the Red Zone

NIWA freshwater ecologist Dr Michelle Greenwood is trying to find out how a change in the colour spectrum of street lights is affecting the tiny insects that live in and near freshwater.