Free, accessible data will help communities manage, adapt, plan

Apr 14, 2023

B.C. communities can look forward to high-quality data to support effective and informed decision-making on the planning and management of wildfires, landslides, floods and other natural events.

The Province is investing more than $38 million in a new program over the next six years to collect light distance and ranging (LiDAR) elevation data.

LiDAR is a modern survey method that uses aerial remote sensing technology to map the Earth’s surface. It delivers highly detailed and accurate three-dimensional mappings of landscapes. Unlike the Province’s current digital models of landscapes that are based on aerial imagery taken 30 years ago, LiDAR-based mapping includes detailed representations of forests, bodies of water, and buildings, as well as other infrastructure.

“Investing in better data means investing in better decisions for climate resiliency,” said Nathan Cullen, Minister of Water, Land and Resource Stewardship. “Generating this invaluable data and making it freely available will keep people safe, and ensure communities are protected, productive and economically competitive.”

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Video: Wheat Yields in USA and China Threatened by Heat Waves Breaking Enzymes

A new peer reviewed study looks at the generally unrecognized risk of heat waves surpassing the threshold for enzyme damage in wheat.

Most studies that look at crop failure in the main food growing regions (breadbaskets of the planet) look at temperatures and droughts in the historical records to assess present day risk. Since the climate system has changed, these historical based risk analysis studies underestimate the present-day risks.

What this new research study does is generate an ensemble of plausible scenarios for the present climate in terms of temperatures and precipitation, and looks at how many of these plausible scenarios exceed the enzyme-breaking temperature of 32.8 C for wheat, and exceed the high stress yield reducing temperature of 27.8 C for wheat. Also, the study considers the possibility of a compounded failure with heat waves in both regions simultaneously, this greatly reducing global wheat supply and causing severe shortages.

Results show that the likelihood (risk) of wheat crop failure with a one-in-hundred likelihood in 1981 has in today’s climate become increased by 16x in the USA winter wheat crop (to one-in-six) and by 6x in northeast China (to one-in-sixteen).

The risks determined in this new paper are much greater than that obtained in previous work that determines risk by analyzing historical climate patterns.

Clearly, since the climate system is rapidly changing, we cannot assume stationarity and calculate risk probabilities like we did traditionally before.

We are essentially on a new planet, with a new climate regime, and have to understand that everything is different now.