{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:45:49.800950", "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": "2010-Oct-19_to_2010-Oct-25_48.5_2.0"}, "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": 2010100000767}, "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": "October 19 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 25 2010"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": 237736.98199989836}, "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": ["Somalia"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Equatorial.Indian-Ocean", "N.Eastern-Africa", "S.Eastern-Africa"]}, "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": ["Indian Ocean"]}, "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": 2.0}, "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": 48.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "48.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 45.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 50.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -0.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 5.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2010-10-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[45.25, 1.5], [45.47, 2.03], [45.82, 2.18], [45.97, 2.53], [46.5, 2.75], [46.75, 2.65], [47.0, 2.75], [47.25, 2.65], [47.5, 2.75], [47.75, 2.65], [47.82, 2.68], [47.85, 2.75], [47.75, 3.0], [47.85, 3.25], [47.75, 3.5], [47.85, 3.75], [47.75, 4.0], [47.97, 4.53], [48.32, 4.68], [48.35, 4.75], [48.25, 5.0], [48.47, 5.53], [49.0, 5.75], [49.25, 5.65], [49.5, 5.75], [50.03, 5.53], [50.25, 5.0], [50.15, 4.75], [50.18, 4.68], [50.53, 4.53], [50.75, 4.0], [50.65, 3.75], [50.68, 3.68], [51.03, 3.53], [51.25, 3.0], [51.15, 2.75], [51.25, 2.5], [51.15, 2.25], [51.25, 2.0], [51.15, 1.75], [51.25, 1.5], [51.03, 0.97], [50.68, 0.82], [50.53, 0.47], [50.18, 0.32], [50.03, -0.03], [49.68, -0.18], [49.53, -0.53], [49.0, -0.75], [48.75, -0.65], [48.5, -0.75], [48.25, -0.65], [48.0, -0.75], [47.47, -0.53], [47.32, -0.18], [47.25, -0.15], [47.0, -0.25], [46.75, -0.15], [46.5, -0.25], [45.97, -0.03], [45.75, 0.5], [45.85, 0.75], [45.82, 0.82], [45.47, 0.97], [45.25, 1.5]]]]}, "2010-10-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[45.47, 2.53], [45.82, 2.68], [45.97, 3.03], [46.32, 3.18], [46.47, 3.53], [46.82, 3.68], [46.85, 3.75], [46.75, 4.0], [46.97, 4.53], [47.32, 4.68], [47.47, 5.03], [47.82, 5.18], [47.97, 5.53], [48.32, 5.68], [48.47, 6.03], [49.0, 6.25], [49.25, 6.15], [49.5, 6.25], [50.03, 6.03], [50.25, 5.5], [50.15, 5.25], [50.25, 5.0], [50.15, 4.75], [50.18, 4.68], [50.53, 4.53], [50.75, 4.0], [50.65, 3.75], [50.68, 3.68], [51.03, 3.53], [51.25, 3.0], [51.15, 2.75], [51.25, 2.5], [51.15, 2.25], [51.25, 2.0], [51.15, 1.75], [51.25, 1.5], [51.03, 0.97], [50.68, 0.82], [50.53, 0.47], [50.18, 0.32], [50.03, -0.03], [49.68, -0.18], [49.53, -0.53], [49.0, -0.75], [48.75, -0.65], [48.5, -0.75], [48.25, -0.65], [48.0, -0.75], [47.75, -0.65], [47.5, -0.75], [46.97, -0.53], [46.82, -0.18], [46.75, -0.15], [46.5, -0.25], [45.97, -0.03], [45.75, 0.5], [45.85, 0.75], [45.82, 0.82], [45.47, 0.97], [45.25, 1.5], [45.35, 1.75], [45.25, 2.0], [45.47, 2.53]]]]}, "2010-10-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[45.47, 2.53], [45.82, 2.68], [45.97, 3.03], [46.32, 3.18], [46.47, 3.53], [46.82, 3.68], [46.85, 3.75], [46.75, 4.0], [46.97, 4.53], [47.32, 4.68], [47.47, 5.03], [47.82, 5.18], [47.97, 5.53], [48.32, 5.68], [48.47, 6.03], [49.0, 6.25], [49.25, 6.15], [49.5, 6.25], [50.03, 6.03], [50.25, 5.5], [50.15, 5.25], [50.25, 5.0], [50.15, 4.75], [50.18, 4.68], [50.53, 4.53], [50.75, 4.0], [50.65, 3.75], [50.68, 3.68], [51.03, 3.53], [51.25, 3.0], [51.15, 2.75], [51.25, 2.5], [51.15, 2.25], [51.25, 2.0], [51.15, 1.75], [51.25, 1.5], [51.03, 0.97], [50.68, 0.82], [50.53, 0.47], [50.18, 0.32], [50.03, -0.03], [49.68, -0.18], [49.53, -0.53], [49.0, -0.75], [48.75, -0.65], [48.5, -0.75], [48.25, -0.65], [48.0, -0.75], [47.75, -0.65], [47.5, -0.75], [46.97, -0.53], [46.82, -0.18], [46.75, -0.15], [46.5, -0.25], [45.97, -0.03], [45.75, 0.5], [45.85, 0.75], [45.82, 0.82], [45.47, 0.97], [45.25, 1.5], [45.35, 1.75], [45.25, 2.0], [45.47, 2.53]]]]}, "2010-10-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[45.25, 2.0], [45.47, 2.53], [45.82, 2.68], [45.97, 3.03], [46.32, 3.18], [46.47, 3.53], [46.82, 3.68], [46.85, 3.75], [46.75, 4.0], [46.97, 4.53], [47.32, 4.68], [47.47, 5.03], [47.82, 5.18], [47.97, 5.53], [48.32, 5.68], [48.47, 6.03], [49.0, 6.25], [49.25, 6.15], [49.5, 6.25], [50.03, 6.03], [50.25, 5.5], [50.15, 5.25], [50.25, 5.0], [50.15, 4.75], [50.18, 4.68], [50.53, 4.53], [50.75, 4.0], [50.65, 3.75], [50.68, 3.68], [51.03, 3.53], [51.25, 3.0], [51.15, 2.75], [51.25, 2.5], [51.15, 2.25], [51.25, 2.0], [51.03, 1.47], [50.68, 1.32], [50.53, 0.97], [50.0, 0.75], [49.75, 0.85], [49.68, 0.82], [49.65, 0.75], [49.75, 0.5], [49.65, 0.25], [49.75, 0.0], [49.53, -0.53], [49.0, -0.75], [48.75, -0.65], [48.5, -0.75], [48.25, -0.65], [48.0, -0.75], [47.75, -0.65], [47.5, -0.75], [46.97, -0.53], [46.82, -0.18], [46.75, -0.15], [46.5, -0.25], [45.97, -0.03], [45.75, 0.5], [45.85, 0.75], [45.75, 1.0], [45.85, 1.25], [45.82, 1.32], [45.47, 1.47], [45.25, 2.0]]]]}, "2010-10-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[45.96, 2.0], [45.75, 2.5], [45.97, 3.03], [46.32, 3.18], [46.47, 3.53], [46.82, 3.68], [46.97, 4.03], [47.32, 4.18], [47.47, 4.53], [47.82, 4.68], [47.85, 4.75], [47.75, 5.0], [47.97, 5.53], [48.5, 5.75], [49.03, 5.53], [49.25, 5.0], [49.15, 4.75], [49.25, 4.5], [49.15, 4.25], [49.25, 4.0], [49.15, 3.75], [49.25, 3.5], [49.15, 3.25], [49.18, 3.18], [49.53, 3.03], [49.75, 2.5], [49.65, 2.25], [49.75, 2.0], [49.53, 1.47], [49.18, 1.32], [49.15, 1.25], [49.25, 1.0], [49.03, 0.47], [48.5, 0.25], [48.25, 0.35], [48.0, 0.25], [47.75, 0.35], [47.5, 0.25], [47.0, 0.46], [46.5, 0.25], [45.97, 0.47], [45.75, 1.0], [45.85, 1.25], [45.75, 1.5], [45.96, 2.0]]]]}, "2010-10-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[47.35, 1.75], [47.25, 2.0], [47.47, 2.53], [48.0, 2.75], [48.25, 2.65], [48.5, 2.75], [49.03, 2.53], [49.25, 2.0], [49.15, 1.75], [49.25, 1.5], [49.15, 1.25], [49.25, 1.0], [49.03, 0.47], [48.5, 0.25], [48.25, 0.35], [48.0, 0.25], [47.47, 0.47], [47.25, 1.0], [47.35, 1.25], [47.25, 1.5], [47.35, 1.75]]]]}, "2010-10-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[47.47, 2.53], [48.0, 2.75], [48.25, 2.65], [48.5, 2.75], [49.03, 2.53], [49.25, 2.0], [49.15, 1.75], [49.25, 1.5], [49.03, 0.97], [48.5, 0.75], [48.25, 0.85], [48.0, 0.75], [47.47, 0.97], [47.25, 1.5], [47.35, 1.75], [47.25, 2.0], [47.47, 2.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.030198670745449}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -0.7785503858879685}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.5848683016755, 25.489600149806392, 25.566994641740166, 25.64332096593347, 25.744375910511053, 25.895827069991583, 25.842338711507523]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.437988454786648, 25.130315689348492, 24.918052632429692, 25.16132203349906, 25.46790812799742, 25.863963463210723, 25.788403610526018]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.7864578833552487, -0.8575888106728334, -0.8036429665409613, -0.7420523912310202, -0.6317961184668313, -0.6221755028857009, -0.6862647444091152]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-0.9440884498758919, -1.030198670745449, -1.0199296962169342, -1.014068389961949, -0.7358882042771029, -0.6423862803716816, -0.749940274346045]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5243712018273483, -1.715968125993734, -1.6436978692985538, -1.5333534497547205, -1.2848417063208248, -1.198738103025225, -1.2981283692916485]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.757632123215409, -2.0189499436852327, -2.202341092577137, -2.1980104839554335, -1.514408996468393, -1.2358798043820067, -1.4293583337602351]}}