Fields of study > Air temperature
Growing season length (GSL)
Growing season length (GSL): annual count of days between the first span of at least 6 days with daily mean temperature greater than 5 ºC (TM > 5 °C) and the first span, after July 1st, of 6 days with TM less than 5 °C (TM < 5 ºC), or year-end if this does not occur. The unit of measurement is “days”.
The evolution of GSL anomaly (AGSL, difference between the annual value of GSL and the mean value of GSL in the reference period 1981-2010) during the period 1959-2020 is shown for the Pyrenees and for 4 areas of the Massif (Northern Pyrenees, Southern Pyrenees, Mediterranean Pyrenees and Atlantic Pyrenees); for each of the 12 series analyzed, the evolution of GSL index is shown.
The annual mean of GSL for the Pyrenees is obtained from the annual GSL values of 12 representative series of the Pyrenees massif (areas at different altitudes and on all slopes: north, south, east or Mediterranean and west or Atlantic), while the mean value of GSL for the 4 zones of the Massif is obtained from the annual GSL values of the representative series located in each zone.
Growing season length (GSL)
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Evolution of the annual GSL anomaly (AGSL, in days) in the Pyrenees for the period 1959-2020. Red points (positive AGSL) indicate a GSL value higher than the reference period value and blue points (negative AGSL) indicate a GSL value lower than the reference period value.
The dotted line shows the linear trend of the series (+2,6 days/decade).
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CSV GSL anomaly - Pyrenees (1959-2020) Graph GSL anomaly - Pyrenees (1959-2020)Evolution of the annual GSL anomaly (AGSL, in days) in the Northern Pyrenees for the period 1959-2020. Red points (positive AGSL) indicate a GSL value higher than the reference period value and blue points (negative AGSL) indicate a GSL value lower than the reference period value.
The dotted line shows the linear trend of the series (+2,4 days/decade).
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CSV GSL anomaly - Northern Pyrenees (1959-2020) Graph GSL anomaly - Northern Pyrenees (1959-2020)Evolution of the annual GSL anomaly (AGSL, in days) in the Southern Pyrenees for the period 1959-2020. Red points (positive AGSL) indicate a GSL value higher than the reference period value and blue points (negative AGSL) indicate a GSL value lower than the reference period value.
The dotted line shows the linear trend of the series (+2,8 days/decade).
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CSV GSL anomaly - Southern Pyrenees (1959-2020) Graph GSL anomaly - Southern Pyrenees (1959-2020)Evolution of the annual GSL anomaly (AGSL, in days) in the Mediterranean Pyrenees for the period 1959-2020. Red points (positive AGSL) indicate a GSL value higher than the reference period value and blue points (negative AGSL) indicate a GSL value lower than the reference period value.
The dotted line shows the linear trend of the series (+3,3 days/decade).
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CSV GSL anomaly - Mediterranean Pyrenees (1959-2020) Graph GSL anomaly - Mediterranean Pyrenees (1959-2020)Evolution of the annual GSL anomaly (AGSL, in days) in the Atlantic Pyrenees for the period 1959-2020. Red points (positive AGSL) indicate a GSL value higher than the reference period value and blue points (negative AGSL) indicate a GSL value lower than the reference period value.
The dotted line shows the linear trend of the series (+1,9 days/decade).
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CSV GSL anomaly - Atlantic Pyrenees (1959-2020) Graph GSL anomaly - Atlantic Pyrenees (1959-2020)Evolution of the annual GSL value (in days) in HONDARRIBIA-MALKARROA (Euskadi) for the period 1959-2020.
The dotted line shows the linear trend of the series (-0,2 days/decade).
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CSV GSL - HONDARRIBIA (EUS) (1959-2020) Graph GSL - HONDARRIBIA (EUS) (1959-2020)Evolution of the annual GSL value (in days) in ANDORRA LA VELLA (Andorra) for the period 1959-2020.
The dotted line shows the linear trend of the series (+7,0 days/decade).
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CSV GSL - ANDORRA LA VELLA (AND) (1959-2020) Graph GSL - ANDORRA LA VELLA (AND) (1959-2020)Evolution of the annual GSL value (in days) in RANSOL (Andorra) for the period 1959-2020.
The dotted line shows the linear trend of the series (+5,8 days/decade).
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CSV GSL - RANSOL (AND) (1959-2020) Graph GSL - RANSOL (AND) (1959-2020)Evolution of the annual GSL value (in days) in ASCOU (Occitanie) for the period 1959-2020.
The dotted line shows the linear trend of the series (+2,2 days/decade).
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CSV GSL - ASCOU (OCC) (1959-2020) Graph GSL - ASCOU (OCC) (1959-2020)Evolution of the annual GSL value (in days) in LORP-SENTARAILLE (Occitanie) for the period 1959-2020.
The dotted line shows the linear trend of the series (+2,3 days/decade).
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CSV GSL - LORP-SENTARAILLE (OCC) (1959-2020) Graph GSL - LORP-SENTARAILLE (OCC) (1959-2020)Evolution of the annual GSL value (in days) in BAGNERES DE LUCHON (Occitanie) for the period 1959-2020.
The dotted line shows the linear trend of the series (+2,8 days/decade).
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CSV GSL - BAGNERES DE LUCHON (OCC) (1959-2020) Graph GSL - BAGNERES DE LUCHON (OCC) (1959-2020)Evolution of the annual GSL value (in days) in LARUNS-ARTOUSTE (Nouvelle-Aquitaine) for the period 1959-2020.
The dotted line shows the linear trend of the series (+5,5 days/decade).
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CSV GSL - LARUNS-ARTOUSTE (NAQ) (1959-2020) Graph GSL - LARUNS-ARTOUSTE (NAQ) (1959-2020)Evolution of the annual GSL value (in days) in UZEIN-PAU (Nouvelle-Aquitaine) for the period 1959-2020.
The dotted line shows the linear trend of the series (+0,7 days/decade).
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CSV GSL - UZEIN-PAU (NAQ) (1959-2020) Graph GSL - UZEIN-PAU (NAQ) (1959-2020)Evolution of the annual GSL value (in days) in PERPIGNAN (Occitanie) for the period 1959-2020.
The dotted line shows the linear trend of the series (+0,8 days/decade).
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CSV GSL - PERPIGNAN (OCC) (1959-2020) Graph GSL - PERPIGNAN (OCC) (1959-2020)Evolution of the annual GSL value (in days) in FIGUERES (Catalunya) for the period 1959-2020.
The dotted line shows the linear trend of the series (+0,9 days/decade).
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CSV GSL - FIGUERES (CAT) (1959-2020) Graph GSL - FIGUERES (CAT) (1959-2020)Evolution of the annual GSL value (in days) in TREMP (Catalunya) for the period 1959-2020.
The dotted line shows the linear trend of the series (+3,0 days/decade).
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CSV GSL - TREMP (CAT) (1959-2020) Graph GSL - TREMP (CAT) (1959-2020)
Bulletin of Climate Change Indicators of the Pyrenees 2020
The Bulletin of Climate Change Indicators of the Pyrenees (BICCPIR) 2020 aims to deepen the knowledge of the anthropic climate change effects in the Pyrenees. Thus, information on the climate evolution is provided through a set of indicators grouped by systems.
