The GLOBE program: Green Down campaign 2023

Autumn camapaign 2023_DP

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AUTUMN CAMPAIGN 2023

We finished the observations on November 9.

Leaf 1: 10/27 2023 fallen Leaf 2: 11/9 2023 fallen Leaf 3: 11/8 2023 fallen Leaf 4: 10/25 2023 fallen

In GLOBE Visualiziaton, we created a graf of the color change of our birch.

Data were collected twice a week and entered into the GLOBE database.

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We compared our data with the other schools. Betula/pendula

Elementary school Banija Karlovac, Croatia They are 86 km from our school. The measurements started on September 13 and ended the day before us.

Elementary school Venclja Perka, Domžale, Slovenia They are 103 km from our school. The measurements started a day later than us. Their leaves fell off nine days before ours and they finished measurements the day before us.

We have selected a tree and opened a new measuring point in the GLOBE database.

We started observations on September 25. Latitude: 45.9416 Longitude: 15.4795 Elevation: 178,8 m

Leaf 1: 5GY 3/2 Leaf 2: 5GY 3/2 Leaf 3: 5GY 3/2 Leaf 4: 5GY 3/2

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Primary school Leskovec pri Krškem Pionirska 4 Leskovec pri Krškem Slovenija

GPS school location: 45.943464772905436 N 15.479813703746322 E Sea level: 177 m

On 18 October 2023, the daily temperatures dropped by 18°C. The morning temperatures also dropped a lot, as they were around 6°C on average. Despite the fact that the birch stood in the lee of the building, we believe that this had an effect on the changing color of the leaves.

During the week from 30/10 to 6/11 there was a very strong wind. During this period, a lot of rain fell, and in between there were also stronger storms. We think this helped the leaves fall off more quickly.

They informed me from the GLOBE database that six measurements of our school were missing. Despite their efforts, they failed to restore them, and the system did not allow me to re-enter the data.

Birch almost did not change the color of its leaves during the observed period. We believe that the reason lies in the extremely warm weather and average daily temperatures of around 18°C, which is extreme for this time of year.

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