{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:15:25.257227", "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": "2021-Nov-04_to_2021-Nov-08_90.0_23.5"}, "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": 2021110000221}, "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": "November 04 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 08 2021"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 56891.19340771131}, "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": ["Bangladesh", "India"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia", "Asia"]}, "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": 23.5}, "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": 90.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "90.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 87.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 91.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 21.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 24.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[86.97, 24.53], [87.5, 24.75], [87.75, 24.65], [88.0, 24.75], [88.25, 24.65], [88.5, 24.75], [88.75, 24.65], [89.0, 24.75], [89.25, 24.65], [89.5, 24.75], [90.03, 24.53], [90.18, 24.18], [90.25, 24.15], [90.5, 24.25], [91.03, 24.03], [91.25, 23.5], [91.15, 23.25], [91.18, 23.18], [91.25, 23.15], [91.5, 23.25], [92.03, 23.03], [92.25, 22.5], [92.03, 21.97], [91.68, 21.82], [91.65, 21.75], [91.75, 21.5], [91.53, 20.97], [91.0, 20.75], [90.47, 20.97], [90.32, 21.32], [90.25, 21.35], [90.0, 21.25], [89.47, 21.47], [89.25, 22.0], [89.35, 22.25], [89.32, 22.32], [88.97, 22.47], [88.82, 22.82], [88.47, 22.97], [88.32, 23.32], [88.25, 23.35], [88.24, 23.35], [88.0, 23.25], [87.75, 23.35], [87.5, 23.25], [86.97, 23.47], [86.75, 24.0], [86.97, 24.53]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.Asia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-11-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[87.97, 23.47], [87.75, 24.0], [87.97, 24.53], [88.5, 24.75], [88.75, 24.65], [89.0, 24.75], [89.25, 24.65], [89.5, 24.75], [90.03, 24.53], [90.18, 24.18], [90.53, 24.03], [90.75, 23.5], [90.65, 23.25], [90.75, 23.0], [90.53, 22.47], [90.0, 22.25], [89.75, 22.35], [89.5, 22.25], [88.97, 22.47], [88.82, 22.82], [88.47, 22.97], [88.32, 23.32], [87.97, 23.47]]]]}, "2021-11-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[87.5, 23.25], [86.97, 23.47], [86.75, 24.0], [86.97, 24.53], [87.5, 24.75], [87.75, 24.65], [88.0, 24.75], [88.25, 24.65], [88.5, 24.75], [88.75, 24.65], [89.0, 24.75], [89.25, 24.65], [89.5, 24.75], [90.03, 24.53], [90.18, 24.18], [90.53, 24.03], [90.75, 23.5], [90.65, 23.25], [90.68, 23.18], [90.75, 23.15], [91.0, 23.25], [91.25, 23.15], [91.5, 23.25], [92.03, 23.03], [92.25, 22.5], [92.03, 21.97], [91.68, 21.82], [91.65, 21.75], [91.75, 21.5], [91.53, 20.97], [91.0, 20.75], [90.47, 20.97], [90.32, 21.32], [90.25, 21.35], [90.0, 21.25], [89.47, 21.47], [89.25, 22.0], [89.35, 22.25], [89.32, 22.32], [88.97, 22.47], [88.82, 22.82], [88.47, 22.97], [88.32, 23.32], [88.25, 23.35], [88.0, 23.25], [87.75, 23.35], [87.5, 23.25]]]]}, "2021-11-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[87.5, 23.25], [86.97, 23.47], [86.75, 24.0], [86.97, 24.53], [87.5, 24.75], [87.75, 24.65], [88.0, 24.75], [88.25, 24.65], [88.5, 24.75], [88.75, 24.65], [89.0, 24.75], [89.25, 24.65], [89.5, 24.75], [90.03, 24.53], [90.18, 24.18], [90.25, 24.15], [90.5, 24.25], [91.03, 24.03], [91.25, 23.5], [91.15, 23.25], [91.18, 23.18], [91.25, 23.15], [91.5, 23.25], [92.03, 23.03], [92.25, 22.5], [92.03, 21.97], [91.68, 21.82], [91.65, 21.75], [91.75, 21.5], [91.53, 20.97], [91.0, 20.75], [90.47, 20.97], [90.32, 21.32], [90.25, 21.35], [90.0, 21.25], [89.47, 21.47], [89.25, 22.0], [89.35, 22.25], [89.32, 22.32], [88.97, 22.47], [88.82, 22.82], [88.47, 22.97], [88.32, 23.32], [88.25, 23.35], [88.0, 23.25], [87.75, 23.35], [87.5, 23.25]]]]}, "2021-11-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[87.5, 23.25], [86.97, 23.47], [86.75, 24.0], [86.97, 24.53], [87.5, 24.75], [87.75, 24.65], [88.0, 24.75], [88.5, 24.54], [89.0, 24.75], [89.25, 24.65], [89.5, 24.75], [90.03, 24.53], [90.18, 24.18], [90.25, 24.15], [90.5, 24.25], [91.03, 24.03], [91.25, 23.5], [91.15, 23.25], [91.18, 23.18], [91.25, 23.15], [91.5, 23.25], [92.03, 23.03], [92.25, 22.5], [92.03, 21.97], [91.68, 21.82], [91.65, 21.75], [91.75, 21.5], [91.53, 20.97], [91.0, 20.75], [90.47, 20.97], [90.32, 21.32], [90.25, 21.35], [90.0, 21.25], [89.47, 21.47], [89.25, 22.0], [89.35, 22.25], [89.25, 22.5], [89.38, 22.8], [88.97, 22.97], [88.82, 23.32], [88.5, 23.46], [88.0, 23.25], [87.75, 23.35], [87.5, 23.25]]]]}, "2021-11-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[89.25, 22.5], [89.46, 23.0], [89.25, 23.5], [89.47, 24.03], [90.0, 24.25], [90.25, 24.15], [90.5, 24.25], [91.03, 24.03], [91.25, 23.5], [91.15, 23.25], [91.25, 23.0], [91.15, 22.75], [91.18, 22.68], [91.53, 22.53], [91.75, 22.0], [91.53, 21.47], [91.0, 21.25], [90.75, 21.35], [90.5, 21.25], [90.25, 21.35], [90.0, 21.25], [89.47, 21.47], [89.25, 22.0], [89.35, 22.25], [89.25, 22.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.3010213567419555}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.6270115994530816}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.696282325032712, 24.16206822819356, 23.777796227978342, 24.02253277595014, 24.146781126318103]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.43528681506558, 22.683870692698292, 22.631417733906915, 22.420312360916114, 23.23989792664497]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.6804201656495792, -1.50545490453941, -1.809563317988625, -1.5609537383371368, -1.522842022705376]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.9611111425733156, -1.7928001949734949, -2.3010213567419555, -1.8659494792605642, -1.8527079897474437]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.522230575091456, -1.45791348632419, -1.7490205852425018, -1.5823119929356206, -1.5267690215530525]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7796566050456513, -1.5957389982933496, -2.191471348021066, -1.8597909632827705, -1.7148857630265812]}}