NbS: Analyse Temperature Risk

Modified on Mon, 27 Mar, 2023 at 5:35 PM

Summary Description

When identifying the risk of non-permanent, an important natural risk to consider is extreme temperatures. This template project calculates the average annual temperature over the previous 40 years and then compares the average temperature between the most recent 10 years and the decade of 1981-1990, to determine whether average temperatures have risen at the project sites. The example area is Cambodia, but you can choose whatever country (or area) is of interest. 

Demonstration Video

What should I use this template for?

You should use this template project to look at historical temperature trends for a given location. This could either be a large area (as in this example, where we are looking at Cambodia) or in one or more project sites (here we are looking at 5 different project sites).

What data has been used?

This template uses the ERA5-Land climate dataset. It is a reanalysis dataset providing a consistent view of the evolution of land variables over several decades at an enhanced resolution compared to ERA5. 

ERA5-Land has been produced by replaying the land component of the European Centre for Medium-Range Weather Forecasts (ECMWF) ERA5 climate reanalysis. Reanalysis combines model data with observations from across the world into a globally complete and consistent dataset. Reanalysis produces data that go several decades back in time, providing an accurate description of the climate of the past. This dataset contains 50 climate variables. The data used here is a subset of the full ERA5-Land dataset post-processed by ECMWF.

This dataset does not make future predictions regarding temperature rises but rather allows you to see historical data to understand the long-term trends for your particular location.

What do the outputs show me?

Map Outputs

This template project has only one map output layer. This shows the change in temperature (in degrees Celsius) for each pixel between the decades of 1981-1990 and 2013-2022. The colour scale goes from a decrease of 2 degrees C (in blue) to an increase of 2 degrees C (in red). You can adjust the scale using the setting button on the Add Map Layer block.  

Dashboard Outputs

For this template, the dashboard tab will show a chart and table with the Average Annual Temperature (Celsius) for each project site. In addition, there is also a table showing the decadal temperature change.

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