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Cold spell duration index (CSDI) | Indicadores de Cambio Climático
Air temperature
Fields of study > Air temperature

Cold spell duration index (CSDI)

Cold spell duation index (CSDI): annual count of days with at least 6 consecutive days with a minimum temperature (TN) less than the 10th percentile of the daily TX series for the base period 1981-2010. The unit of measurement is days.

The evolution of CSDI anomaly (ACSDI, difference between the annual value of CSDI and the mean value of CSDI 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 CSDI index is shown.

The annual mean of  CSDI for the Pyrenees is obtained from the annual CSDI 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 CSDI for the 4 zones of the Massif is obtained from the annual CSDI values ​​of the representative series located in each zone.

Cold spell duration index (CSDI)
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Evolution of the annual CSDI anomaly (ACSDI, in days) in the Pyrenees for the period 1959-2020. Red points (positive ACSDI) indicate a CSDI value higher than the reference period value and blue points (negative ACSDI) indicate a CSDI value lower than the reference period value. The dotted line shows the linear trend of the series (-0,9 days/decade).

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CSV CSDI anomaly - Pyrenees (1959-2020) Graph CSDI anomaly - Pyrenees (1959-2020)

Evolution of the annual CSDI anomaly (ACSDI, in days) in the Northern Pyrenees for the period 1959-2020. Red points (positive ACSDI) indicate a CSDI value higher than the reference period value and blue points (negative ACSDI) indicate a CSDI value lower than the reference period value. The dotted line shows the linear trend of the series (-0,8 days/decade).

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CSV CSDI anomaly - Northern Pyrenees (1959-2020) Graph CSDI anomaly - Northern Pyrenees (1959-2020)

Evolution of the annual CSDI anomaly (ACSDI, in days) in the Southern Pyrenees for the period 1959-2020. Red points (positive ACSDI) indicate a CSDI value higher than the reference period value and blue points (negative ACSDI) indicate a CSDI value lower than the reference period value. The dotted line shows the linear trend of the series (-1,1 days/decade).

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CSV CSDI anomaly - Southern Pyrenees (1959-2020) Graph CSDI anomaly - Southern Pyrenees (1959-2020)

Evolution of the annual CSDI anomaly (ACSDI, in days) in the Mediterranean Pyrenees for the period 1959-2020. Red points (positive ACSDI) indicate a CSDI value higher than the reference period value and blue points (negative ACSDI) indicate a CSDI value lower than the reference period value. The dotted line shows the linear trend of the series (-1,4 days/decade).

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CSV CSDI anomaly - Mediterranean Pyrenees (1959-2020) Graph CSDI anomaly - Mediterranean Pyrenees (1959-2020)

Evolution of the annual CSDI anomaly (ACSDI, in days) in the Atlantic Pyrenees for the period 1959-2020. Red points (positive ACSDI) indicate a CSDI value higher than the reference period value and blue points (negative ACSDI) indicate a CSDI value lower than the reference period value. The dotted line shows the linear trend of the series (-0,5 days/decade).

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CSV CSDI anomaly - Atlantic Pyrenees (1959-2020) Graph CSDI anomaly - Atlantic Pyrenees (1959-2020)

Evolution of the annual CSDI value (in days) in SANTESTEBAN (Navarra) for the period 1959-2020. The dotted line shows the linear trend of the series (-0,4 days/decade).

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CSV CSDI - SANTESTEBAN (NAV) (1959-2020) Graph CSDI - SANTESTEBAN (NAV) (1959-2020)

Evolution of the annual CSDI value (in days) in HONDARRIBIA-MALKARROA (Euskadi) for the period 1959-2020. The dotted line shows the linear trend of the series (-0,1 days/decade).

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CSV CSDI - HONDARRIBIA (EUS) (1959-2020) Graph CSDI - HONDARRIBIA (EUS) (1959-2020)

Evolution of the annual CSDI value (in days) in ANDORRA LA VELLA (Andorra) for the period 1959-2020. The dotted line shows the linear trend of the series (-0,8 days/decade).

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CSV CSDI - ANDORRA LA VELLA (AND) (1959-2020) Graph CSDI - ANDORRA LA VELLA (AND) (1959-2020)

Evolution of the annual CSDI value (in days) in RANSOL (Andorra) for the period 1959-2020. The dotted line shows the linear trend of the series (-1,7 days/decade).

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CSV CSDI - RANSOL (AND) (1959-2020) Graph CSDI - RANSOL (AND) (1959-2020)

Evolution of the annual CSDI value (in days) in ASCOU (Occitanie) for the period 1959-2020. The dotted line shows the linear trend of the series (-0,5 days/decade).

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CSV CSDI - ASCOU (OCC) (1959-2020) Graph CSDI - ASCOU (OCC) (1959-2020)

Evolution of the annual CSDI value (in days) in LORP-SENTARAILLE (Occitanie) for the period 1959-2020. The dotted line shows the linear trend of the series (-0,2 days/decade).

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CSV CSDI - LORP-SENTARAILLE (OCC) (1959-2020) Graph CSDI - LORP-SENTARAILLE (OCC) (1959-2020)

Evolution of the annual CSDI value (in days) in BAGNERES DE LUCHON (Occitanie) for the period 1959-2020. The dotted line shows the linear trend of the series (-1,6 days/decade).

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CSV CSDI - BAGNERES DE LUCHON (OCC) (1959-2020) Graph CSDI - BAGNERES DE LUCHON (OCC) (1959-2020)

Evolution of the annual CSDI value (in days) in LARUNS-ARTOUSTE (Nouvelle-Aquitaine) for the period 1959-2020. The dotted line shows the linear trend of the series (-0,8 days/decade).

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CSV CSDI - LARUNS-ARTOUSTE (NAQ) (1959-2020) Graph CSDI - LARUNS-ARTOUSTE (NAQ) (1959-2020)

Evolution of the annual CSDI value (in days) in UZEIN-PAU (Nouvelle-Aquitaine) for the period 1959-2020. The dotted line shows the linear trend of the series (+0,1 days/decade).

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CSV CSDI - UZEIN-PAU (NAQ) (1959-2020) Graph CSDI - UZEIN-PAU (NAQ) (1959-2020)

Evolution of the annual CSDI value (in days) in PERPIGNAN (Occitanie) for the period 1959-2020. The dotted line shows the linear trend of the series (-1,7 days/decade).

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CSV CSDI - PERPIGNAN (OCC) (1959-2020) Graph CSDI - PERPIGNAN (OCC) (1959-2020)

Evolution of the annual CSDI value (in days) in FIGUERES (Catalunya) for the period 1959-2020. The dotted line shows the linear trend of the series (-1,8 days/decade).

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CSV CSDI - FIGUERES (CAT) (1959-2020) Graph CSDI - FIGUERES (CAT) (1959-2020)

Evolution of the annual CSDI value (in days) in TREMP (Catalunya) for the period 1959-2020. The dotted line shows the linear trend of the series (-1,8 days/decade).

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CSV CSDI - TREMP (CAT) (1959-2020) Graph CSDI - TREMP (CAT) (1959-2020)

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