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Kommentare zu: Toni W. Püntener https://www.umweltnetz.ch/content Umwelt und Politik - ein Internet-Angebot von Toni W. Püntener Wed, 15 Jul 2026 12:30:55 +0000 hourly 1 https://wordpress.org/?v=7.1.4 Von: Toni W. Püntener https://www.umweltnetz.ch/content/eine-seite/comment-page-1#comment-9536 Fri, 20 Jan 2017 15:24:16 +0000 #comment-9536 Als Antwort auf Bernhard Stettler.

Sehr geehrter Herr Stettler
Der Greifensee liegt auf 435 Meter über Meer, der Pfäffikersee auf 537 müM, und die Messstation in Seegräben noch 21 Meter höher. Üblicherweise wird pro 100 Meter Höhenzunahme von einer Abnahme der Temperatur um 0.6 K ausgegangen. Die Tagesmitteltemperaturen vom 1.11.16 bis zum 19.1.17 liegen am Greifensee tatsächlich etwa 0.6 K höher als in Seegräben. Da für die Kältesumme nur die Temperaturen mit im Tagesmittel unter 0 °C berücksichtigt werden, ergibt sich der beobachtete Unterschied von etwa 28 Kelvintagen (in Seegräben 34 Tage mit Tagesmittel unter 0 °C, mit im Mittel -2.4 °C; am Greifensee 27 Tage mit Tagesmittel unter 0 °C, mit im Mittel -2.0 °C).
Herzlichen Gruss, Toni W. Püntener

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Von: Bernhard Stettler https://www.umweltnetz.ch/content/eine-seite/comment-page-1#comment-9535 Fri, 20 Jan 2017 13:23:43 +0000 #comment-9535 Grüezi Herr Püntener, vielen Dank für Ihre informative Seite! Insbesondere die Kältesummen unserer Seen sind für mich als Naturliebhaber und Fischer eine gute Sache! Dazu eine Frage: Wie kommt es, dass die Kältesummen Greifensee und Pfäffikersee nicht in etwa die gleichen Werte aufweisen? Meines Erachtens sollten diese beide ungefähr gleich sein. Herzlicher Gruss, Beni Stettler, Greifensee

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Von: Margrith Gysel https://www.umweltnetz.ch/content/eine-seite/comment-page-1#comment-8042 Mon, 02 Dec 2013 11:44:55 +0000 #comment-8042 Wir sind neu auf Facebook! MG

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