{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:20:38.408054", "data_source": "ERA5", "website": "http://wexa.jamstec.go.jp", "Author": "Patrick Martineau"}, "event_id": {"name": "Event ID", "description": "A unique identifier based on: beginning_date, end_date, longitude, and latitude", "value": "2020-Jul-05_to_2020-Jul-08_10.5_30.5"}, "event_label": {"name": "Event label", "description": "Integer-valued grid identifier that uniquely labels each detected extreme event in space and time, consistent with the corresponding labels stored in the NetCDF dataset.", "value": 2020070000245}, "status": {"name": "Status", "description": "An ongoing event denotes an event that lasts up to the latest data available. These events are subject to change as newer data is added.", "value": false}, "start_date": {"name": "Start date", "description": "First date on which grid points are under the influence of an event", "value": "July 05 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 08 2020"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "figures_available": {"name": "Figures available", "description": "True if figures were pre-generated for this event", "value": true}, "detection_var": {"name": "Detection variable", "description": "Variable used for the detection scheme", "value": "t2m"}, "event_type": {"name": "Event type", "description": "Type of the event detected", "value": "Cold spell"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 255430.43036640537}, "countries_affected": {"name": "Countries affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the countries affected by an event during its lifetime.", "value": ["Algeria", "Libya"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Mediterranean", "Sahara"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa"]}, "oceans_affected": {"name": "Ocean basins affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the ocean basins affected by an event during its lifetime.", "value": []}, "center_lat": {"name": "Center latitude", "description": "Latitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 30.5}, "center_lon": {"name": "Center longitude", "description": "Longitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 10.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "10.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 7.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 16.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 25.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 32.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-07-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[9.97, 29.97], [9.75, 30.5], [9.97, 31.03], [10.5, 31.25], [10.75, 31.15], [10.82, 31.18], [10.97, 31.53], [11.32, 31.68], [11.47, 32.03], [11.82, 32.18], [11.97, 32.53], [12.5, 32.75], [12.75, 32.65], [12.82, 32.68], [12.97, 33.03], [13.5, 33.25], [14.03, 33.03], [14.25, 32.5], [14.15, 32.25], [14.25, 32.0], [14.03, 31.47], [13.68, 31.32], [13.53, 30.97], [13.18, 30.82], [13.03, 30.47], [12.5, 30.25], [12.25, 30.35], [12.18, 30.32], [12.03, 29.97], [11.5, 29.75], [11.25, 29.85], [11.0, 29.75], [10.75, 29.85], [10.5, 29.75], [9.97, 29.97]]]]}, "2020-07-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[6.97, 27.47], [6.75, 28.0], [6.97, 28.53], [7.5, 28.75], [7.75, 28.65], [8.0, 28.75], [8.25, 28.65], [8.5, 28.75], [8.75, 28.65], [9.0, 28.75], [9.25, 28.65], [9.38, 28.7], [9.32, 28.82], [8.97, 28.97], [8.75, 29.5], [8.85, 29.75], [8.75, 30.0], [8.97, 30.53], [9.5, 30.75], [9.75, 30.65], [9.82, 30.68], [9.97, 31.03], [10.5, 31.25], [10.75, 31.15], [10.82, 31.18], [10.97, 31.53], [11.32, 31.68], [11.47, 32.03], [11.82, 32.18], [11.97, 32.53], [12.5, 32.75], [12.75, 32.65], [12.82, 32.68], [12.97, 33.03], [13.5, 33.25], [14.03, 33.03], [14.25, 32.5], [14.15, 32.25], [14.25, 32.0], [14.03, 31.47], [13.68, 31.32], [13.53, 30.97], [13.18, 30.82], [13.03, 30.47], [12.5, 30.25], [12.25, 30.35], [12.18, 30.32], [12.03, 29.97], [11.68, 29.82], [11.63, 29.7], [11.75, 29.65], [12.0, 29.75], [12.53, 29.53], [12.68, 29.18], [12.75, 29.15], [13.0, 29.25], [13.25, 29.15], [13.5, 29.25], [13.75, 29.15], [13.88, 29.2], [13.75, 29.5], [13.97, 30.03], [14.32, 30.18], [14.47, 30.53], [14.82, 30.68], [14.97, 31.03], [15.5, 31.25], [15.75, 31.15], [16.0, 31.25], [16.53, 31.03], [16.75, 30.5], [16.65, 30.25], [16.75, 30.0], [16.65, 29.75], [16.75, 29.5], [16.53, 28.97], [16.18, 28.82], [16.03, 28.47], [15.5, 28.25], [15.25, 28.35], [15.18, 28.32], [15.03, 27.97], [14.68, 27.82], [14.53, 27.47], [14.0, 27.25], [13.75, 27.35], [13.68, 27.32], [13.53, 26.97], [13.0, 26.75], [12.75, 26.85], [12.68, 26.82], [12.65, 26.75], [12.75, 26.5], [12.53, 25.97], [12.18, 25.82], [12.15, 25.75], [12.25, 25.5], [12.03, 24.97], [11.5, 24.75], [10.97, 24.97], [10.82, 25.32], [10.75, 25.35], [10.5, 25.25], [10.25, 25.35], [10.18, 25.32], [10.03, 24.97], [9.5, 24.75], [9.25, 24.85], [9.0, 24.75], [8.47, 24.97], [8.32, 25.32], [7.97, 25.47], [7.75, 26.0], [7.96, 26.5], [7.75, 27.0], [7.85, 27.25], [7.82, 27.32], [7.75, 27.35], [7.5, 27.25], [6.97, 27.47]]]]}, "2020-07-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[6.97, 27.47], [6.75, 28.0], [6.97, 28.53], [7.5, 28.75], [7.75, 28.65], [8.0, 28.75], [8.25, 28.65], [8.5, 28.75], [8.75, 28.65], [9.0, 28.75], [9.25, 28.65], [9.38, 28.7], [9.32, 28.82], [8.97, 28.97], [8.75, 29.5], [8.85, 29.75], [8.75, 30.0], [8.97, 30.53], [9.5, 30.75], [9.75, 30.65], [9.82, 30.68], [9.97, 31.03], [10.5, 31.25], [10.75, 31.15], [10.82, 31.18], [10.97, 31.53], [11.32, 31.68], [11.47, 32.03], [11.82, 32.18], [11.97, 32.53], [12.5, 32.75], [12.75, 32.65], [12.82, 32.68], [12.97, 33.03], [13.5, 33.25], [14.03, 33.03], [14.25, 32.5], [14.15, 32.25], [14.25, 32.0], [14.03, 31.47], [13.68, 31.32], [13.53, 30.97], [13.18, 30.82], [13.03, 30.47], [12.5, 30.25], [12.25, 30.35], [12.18, 30.32], [12.03, 29.97], [11.68, 29.82], [11.63, 29.7], [11.75, 29.65], [12.0, 29.75], [12.53, 29.53], [12.68, 29.18], [12.75, 29.15], [13.0, 29.25], [13.25, 29.15], [13.5, 29.25], [13.75, 29.15], [13.88, 29.2], [13.75, 29.5], [13.97, 30.03], [14.32, 30.18], [14.47, 30.53], [14.82, 30.68], [14.97, 31.03], [15.5, 31.25], [15.75, 31.15], [16.0, 31.25], [16.53, 31.03], [16.75, 30.5], [16.65, 30.25], [16.75, 30.0], [16.65, 29.75], [16.75, 29.5], [16.53, 28.97], [16.18, 28.82], [16.03, 28.47], [15.5, 28.25], [15.25, 28.35], [15.18, 28.32], [15.03, 27.97], [14.68, 27.82], [14.53, 27.47], [14.0, 27.25], [13.75, 27.35], [13.68, 27.32], [13.53, 26.97], [13.0, 26.75], [12.75, 26.85], [12.68, 26.82], [12.65, 26.75], [12.75, 26.5], [12.53, 25.97], [12.18, 25.82], [12.15, 25.75], [12.25, 25.5], [12.03, 24.97], [11.5, 24.75], [10.97, 24.97], [10.82, 25.32], [10.75, 25.35], [10.5, 25.25], [10.25, 25.35], [10.18, 25.32], [10.03, 24.97], [9.5, 24.75], [9.25, 24.85], [9.0, 24.75], [8.47, 24.97], [8.32, 25.32], [7.97, 25.47], [7.75, 26.0], [7.96, 26.5], [7.75, 27.0], [7.85, 27.25], [7.82, 27.32], [7.75, 27.35], [7.5, 27.25], [6.97, 27.47]]]]}, "2020-07-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[6.97, 27.47], [6.75, 28.0], [6.97, 28.53], [7.5, 28.75], [7.75, 28.65], [8.0, 28.75], [8.25, 28.65], [8.5, 28.75], [8.75, 28.65], [9.0, 28.75], [9.25, 28.65], [9.38, 28.7], [9.32, 28.82], [8.97, 28.97], [8.75, 29.5], [8.85, 29.75], [8.75, 30.0], [8.97, 30.53], [9.5, 30.75], [9.75, 30.65], [9.82, 30.68], [9.97, 31.03], [10.5, 31.25], [10.75, 31.15], [11.0, 31.25], [11.25, 31.15], [11.5, 31.25], [12.03, 31.03], [12.25, 30.5], [12.03, 29.97], [11.68, 29.82], [11.63, 29.7], [11.75, 29.65], [12.0, 29.75], [12.53, 29.53], [12.68, 29.18], [12.75, 29.15], [13.0, 29.25], [13.25, 29.15], [13.5, 29.25], [13.75, 29.15], [13.88, 29.2], [13.75, 29.5], [13.97, 30.03], [14.32, 30.18], [14.47, 30.53], [14.82, 30.68], [14.97, 31.03], [15.5, 31.25], [15.75, 31.15], [16.0, 31.25], [16.53, 31.03], [16.75, 30.5], [16.65, 30.25], [16.75, 30.0], [16.65, 29.75], [16.75, 29.5], [16.53, 28.97], [16.18, 28.82], [16.03, 28.47], [15.5, 28.25], [15.25, 28.35], [15.18, 28.32], [15.03, 27.97], [14.68, 27.82], [14.53, 27.47], [14.0, 27.25], [13.75, 27.35], [13.68, 27.32], [13.53, 26.97], [13.0, 26.75], [12.75, 26.85], [12.68, 26.82], [12.65, 26.75], [12.75, 26.5], [12.53, 25.97], [12.18, 25.82], [12.15, 25.75], [12.25, 25.5], [12.03, 24.97], [11.5, 24.75], [10.97, 24.97], [10.82, 25.32], [10.75, 25.35], [10.5, 25.25], [10.25, 25.35], [10.18, 25.32], [10.03, 24.97], [9.5, 24.75], [9.25, 24.85], [9.0, 24.75], [8.47, 24.97], [8.32, 25.32], [7.97, 25.47], [7.75, 26.0], [7.96, 26.5], [7.75, 27.0], [7.85, 27.25], [7.82, 27.32], [7.75, 27.35], [7.5, 27.25], [6.97, 27.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.17578398833632}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.6902318470792412}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.295318875454598, 28.150615305539247, 28.37900680690251, 29.598094130799723]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.443024586570573, 21.907727681253334, 23.015820991092767, 25.28006440141911]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.437922212914871, -4.051101880087745, -3.8534904762473356, -2.9879929304070636]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.599676752755272, -6.17578398833632, -5.068187511161113, -3.753559917138091]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.535996593505838, -1.8809212759287355, -1.8186256079478158, -1.4332568565469397]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7345377447801738, -2.740914943181855, -2.319135353048397, -1.6825344265156144]}}