Category: Extremes affecting Antarctica

Cold spell occuring from February 27 2023 to March 09 2023 at -79.5°S 102.0°E

Download data: JSON

Event type: Cold spell

Countries affected (identified with ArcGIS Online; provided only for geographical reference):

  • Antarctica

Duration: 11 days

Time span: February 27 2023 to March 09 2023

Statistics over entire affected area:

  • Mean temperature anomaly: -7.3 °C
  • Mean temperature: -51.4 °C
  • Minimum temperature anomaly: -10.4 °C
  • Minimum temperature: -60.3 °C

Event center: -79.5°S 102.0°E

Area affected: 1198095 km$^2$


Fig. 1: Map of most extreme temperature anomalies (standardized) experienced during the event. The purple star indicates the center of the extreme event. Green hatching illustrates all areas under the effect of extremes at some time during the event.



Fig. 2: Evolution of temperature at the center of the event. The climatological percentile distribution is illustrated with color shadings.



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Cold_spell_2023-Feb-27_to_2023-Mar-09_102.0_-79.5

Heat wave occuring from February 25 2023 to February 28 2023 at -86.0°S 192.5°E

Download data: JSON

Event type: Heat wave

Countries affected (identified with ArcGIS Online; provided only for geographical reference):

  • Antarctica

Duration: 4 days

Time span: February 25 2023 to February 28 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 7.5 °C
  • Mean temperature: -29.5 °C
  • Maximum temperature anomaly: 10.4 °C
  • Maximum temperature: -7.6 °C

Event center: -86.0°S 192.5°E

Area affected: 132249 km$^2$


Fig. 1: Map of most extreme temperature anomalies (standardized) experienced during the event. The purple star indicates the center of the extreme event. Green hatching illustrates all areas under the effect of extremes at some time during the event.



Fig. 2: Evolution of temperature at the center of the event. The climatological percentile distribution is illustrated with color shadings.



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Heat_wave_2023-Feb-25_to_2023-Feb-28_192.5_-86.0

Heat wave occuring from February 25 2023 to March 02 2023 at -73.5°S 159.5°E

Download data: JSON

Event type: Heat wave

Countries affected (identified with ArcGIS Online; provided only for geographical reference):

  • Antarctica

Duration: 6 days

Time span: February 25 2023 to March 02 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 8.1 °C
  • Mean temperature: -19.5 °C
  • Maximum temperature anomaly: 12.8 °C
  • Maximum temperature: -1.7 °C

Event center: -73.5°S 159.5°E

Area affected: 98582 km$^2$


Fig. 1: Map of most extreme temperature anomalies (standardized) experienced during the event. The purple star indicates the center of the extreme event. Green hatching illustrates all areas under the effect of extremes at some time during the event.



Fig. 2: Evolution of temperature at the center of the event. The climatological percentile distribution is illustrated with color shadings.



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Heat_wave_2023-Feb-25_to_2023-Mar-02_159.5_-73.5

Cold spell occuring from February 24 2023 to March 21 2023 at -55.0°S 262.5°E

Download data: JSON

Event type: Cold spell

Countries affected (identified with ArcGIS Online; provided only for geographical reference):

  • Antarctica
  • Argentina
  • Chile

Duration: 26 days

Time span: February 24 2023 to March 21 2023

Statistics over entire affected area:

  • Mean temperature anomaly: -2.5 °C
  • Mean temperature: 4.2 °C
  • Minimum temperature anomaly: -6.5 °C
  • Minimum temperature: -4.3 °C

Event center: -55.0°S 262.5°E

Area affected: 12272620 km$^2$


Fig. 1: Map of most extreme temperature anomalies (standardized) experienced during the event. The purple star indicates the center of the extreme event. Green hatching illustrates all areas under the effect of extremes at some time during the event.



Fig. 2: Evolution of temperature at the center of the event. The climatological percentile distribution is illustrated with color shadings.



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Cold_spell_2023-Feb-24_to_2023-Mar-21_262.5_-55.0

Heat wave occuring from February 24 2023 to February 28 2023 at -86.5°S 255.0°E

Download data: JSON

Event type: Heat wave

Countries affected (identified with ArcGIS Online; provided only for geographical reference):

  • Antarctica

Duration: 5 days

Time span: February 24 2023 to February 28 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 7.3 °C
  • Mean temperature: -22.8 °C
  • Maximum temperature anomaly: 10.7 °C
  • Maximum temperature: -13.1 °C

Event center: -86.5°S 255.0°E

Area affected: 54801 km$^2$


Fig. 1: Map of most extreme temperature anomalies (standardized) experienced during the event. The purple star indicates the center of the extreme event. Green hatching illustrates all areas under the effect of extremes at some time during the event.



Fig. 2: Evolution of temperature at the center of the event. The climatological percentile distribution is illustrated with color shadings.



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Heat_wave_2023-Feb-24_to_2023-Feb-28_255.0_-86.5

Heat wave occuring from February 23 2023 to March 03 2023 at -74.0°S 217.5°E

Download data: JSON

Event type: Heat wave

Countries affected (identified with ArcGIS Online; provided only for geographical reference):

  • Antarctica

Duration: 9 days

Time span: February 23 2023 to March 03 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 4.1 °C
  • Mean temperature: -1.7 °C
  • Maximum temperature anomaly: 7.5 °C
  • Maximum temperature: -0.4 °C

Event center: -74.0°S 217.5°E

Area affected: 131664 km$^2$


Fig. 1: Map of most extreme temperature anomalies (standardized) experienced during the event. The purple star indicates the center of the extreme event. Green hatching illustrates all areas under the effect of extremes at some time during the event.



Fig. 2: Evolution of temperature at the center of the event. The climatological percentile distribution is illustrated with color shadings.



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Heat_wave_2023-Feb-23_to_2023-Mar-03_217.5_-74.0

Heat wave occuring from February 22 2023 to February 25 2023 at -68.5°S 70.0°E

Download data: JSON

Event type: Heat wave

Countries affected (identified with ArcGIS Online; provided only for geographical reference):

  • Antarctica

Duration: 4 days

Time span: February 22 2023 to February 25 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 5.5 °C
  • Mean temperature: -11.7 °C
  • Maximum temperature anomaly: 8.9 °C
  • Maximum temperature: -0.8 °C

Event center: -68.5°S 70.0°E

Area affected: 119163 km$^2$


Fig. 1: Map of most extreme temperature anomalies (standardized) experienced during the event. The purple star indicates the center of the extreme event. Green hatching illustrates all areas under the effect of extremes at some time during the event.



Fig. 2: Evolution of temperature at the center of the event. The climatological percentile distribution is illustrated with color shadings.



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Heat_wave_2023-Feb-22_to_2023-Feb-25_70.0_-68.5

Heat wave occuring from February 22 2023 to February 24 2023 at -75.5°S 73.5°E

Download data: JSON

Event type: Heat wave

Countries affected (identified with ArcGIS Online; provided only for geographical reference):

  • Antarctica

Duration: 3 days

Time span: February 22 2023 to February 24 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 5.7 °C
  • Mean temperature: -18.3 °C
  • Maximum temperature anomaly: 8.8 °C
  • Maximum temperature: -10.8 °C

Event center: -75.5°S 73.5°E

Area affected: 52791 km$^2$


Fig. 1: Map of most extreme temperature anomalies (standardized) experienced during the event. The purple star indicates the center of the extreme event. Green hatching illustrates all areas under the effect of extremes at some time during the event.



Fig. 2: Evolution of temperature at the center of the event. The climatological percentile distribution is illustrated with color shadings.



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Heat_wave_2023-Feb-22_to_2023-Feb-24_73.5_-75.5

Heat wave occuring from February 22 2023 to May 10 2023 at -49.0°S 194.5°E

Download data: JSON

Event type: Heat wave

Countries affected (identified with ArcGIS Online; provided only for geographical reference):

  • Antarctica
  • Australia
  • New Zealand

Duration: 78 days

Time span: February 22 2023 to May 10 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 8.4 °C
  • Mean temperature: -16.0 °C
  • Maximum temperature anomaly: 27.1 °C
  • Maximum temperature: 29.0 °C

Event center: -49.0°S 194.5°E

Area affected: 27226859 km$^2$


Fig. 1: Map of most extreme temperature anomalies (standardized) experienced during the event. The purple star indicates the center of the extreme event. Green hatching illustrates all areas under the effect of extremes at some time during the event.



Fig. 2: Evolution of temperature at the center of the event. The climatological percentile distribution is illustrated with color shadings.



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Heat_wave_2023-Feb-22_to_2023-May-10_194.5_-49.0

Heat wave occuring from February 21 2023 to February 24 2023 at -65.0°S 117.5°E

Download data: JSON

Event type: Heat wave

Countries affected (identified with ArcGIS Online; provided only for geographical reference):

  • Antarctica

Duration: 4 days

Time span: February 21 2023 to February 24 2023

Statistics over entire affected area:

  • Mean temperature anomaly: 2.9 °C
  • Mean temperature: -1.5 °C
  • Maximum temperature anomaly: 5.6 °C
  • Maximum temperature: 0.9 °C

Event center: -65.0°S 117.5°E

Area affected: 62464 km$^2$


Fig. 1: Map of most extreme temperature anomalies (standardized) experienced during the event. The purple star indicates the center of the extreme event. Green hatching illustrates all areas under the effect of extremes at some time during the event.



Fig. 2: Evolution of temperature at the center of the event. The climatological percentile distribution is illustrated with color shadings.



Fig. 3: Maps illustrating the evolution of standardized temperature anomalies during the event.

Event ID: Heat_wave_2023-Feb-21_to_2023-Feb-24_117.5_-65.0