{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:00:24.539717", "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": "2024-Aug-03_to_2024-Aug-08_69.5_27.0"}, "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": 2024080000158}, "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": "August 03 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 08 2024"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 63095.77167621927}, "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": ["India", "Pakistan"]}, "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": 27.0}, "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": 69.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "69.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 69.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 73.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 26.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 28.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[69.75, 27.65], [70.0, 27.75], [70.25, 27.65], [70.32, 27.68], [70.47, 28.03], [70.82, 28.18], [70.85, 28.25], [70.75, 28.5], [70.97, 29.03], [71.5, 29.25], [71.75, 29.15], [72.0, 29.25], [72.25, 29.15], [72.5, 29.25], [73.03, 29.03], [73.18, 28.68], [73.53, 28.53], [73.75, 28.0], [73.65, 27.75], [73.68, 27.68], [74.03, 27.53], [74.25, 27.0], [74.03, 26.47], [73.5, 26.25], [73.25, 26.35], [73.0, 26.25], [72.75, 26.35], [72.5, 26.25], [72.25, 26.35], [72.18, 26.32], [72.03, 25.97], [71.5, 25.75], [70.97, 25.97], [70.82, 26.32], [70.75, 26.35], [70.5, 26.25], [70.25, 26.35], [70.18, 26.32], [70.03, 25.97], [69.5, 25.75], [68.97, 25.97], [68.75, 26.5], [68.85, 26.75], [68.75, 27.0], [68.97, 27.53], [69.5, 27.75], [69.75, 27.65]]]]}}, "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": {"2024-08-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[68.75, 27.0], [68.97, 27.53], [69.5, 27.75], [69.75, 27.65], [70.0, 27.75], [70.53, 27.53], [70.75, 27.0], [70.53, 26.47], [70.18, 26.32], [70.03, 25.97], [69.5, 25.75], [68.97, 25.97], [68.75, 26.5], [68.85, 26.75], [68.75, 27.0]]]]}, "2024-08-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[68.75, 27.0], [68.97, 27.53], [69.5, 27.75], [69.75, 27.65], [70.0, 27.75], [70.53, 27.53], [70.75, 27.0], [70.53, 26.47], [70.18, 26.32], [70.03, 25.97], [69.5, 25.75], [68.97, 25.97], [68.75, 26.5], [68.85, 26.75], [68.75, 27.0]]]]}, "2024-08-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[68.75, 27.0], [68.97, 27.53], [69.5, 27.75], [69.75, 27.65], [70.0, 27.75], [70.25, 27.65], [70.32, 27.68], [70.47, 28.03], [70.82, 28.18], [70.97, 28.53], [71.5, 28.75], [71.75, 28.65], [72.0, 28.75], [72.25, 28.65], [72.5, 28.75], [73.03, 28.53], [73.18, 28.18], [73.53, 28.03], [73.68, 27.68], [74.03, 27.53], [74.25, 27.0], [74.03, 26.47], [73.5, 26.25], [73.25, 26.35], [73.0, 26.25], [72.75, 26.35], [72.5, 26.25], [72.25, 26.35], [72.18, 26.32], [72.03, 25.97], [71.5, 25.75], [70.97, 25.97], [70.82, 26.32], [70.75, 26.35], [70.5, 26.25], [70.25, 26.35], [70.18, 26.32], [70.03, 25.97], [69.5, 25.75], [68.97, 25.97], [68.75, 26.5], [68.85, 26.75], [68.75, 27.0]]]]}, "2024-08-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[68.75, 27.0], [68.97, 27.53], [69.5, 27.75], [69.75, 27.65], [70.0, 27.75], [70.25, 27.65], [70.32, 27.68], [70.47, 28.03], [70.82, 28.18], [70.85, 28.25], [70.75, 28.5], [70.97, 29.03], [71.5, 29.25], [71.75, 29.15], [72.0, 29.25], [72.25, 29.15], [72.5, 29.25], [73.03, 29.03], [73.18, 28.68], [73.53, 28.53], [73.75, 28.0], [73.65, 27.75], [73.68, 27.68], [74.03, 27.53], [74.25, 27.0], [74.03, 26.47], [73.5, 26.25], [73.25, 26.35], [73.0, 26.25], [72.75, 26.35], [72.5, 26.25], [72.25, 26.35], [72.18, 26.32], [72.03, 25.97], [71.5, 25.75], [70.97, 25.97], [70.82, 26.32], [70.75, 26.35], [70.5, 26.25], [70.25, 26.35], [70.18, 26.32], [70.03, 25.97], [69.5, 25.75], [68.97, 25.97], [68.75, 26.5], [68.85, 26.75], [68.75, 27.0]]]]}, "2024-08-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[69.5, 26.25], [68.97, 26.47], [68.75, 27.0], [68.97, 27.53], [69.5, 27.75], [69.75, 27.65], [70.0, 27.75], [70.25, 27.65], [70.32, 27.68], [70.47, 28.03], [70.82, 28.18], [70.85, 28.25], [70.75, 28.5], [70.97, 29.03], [71.5, 29.25], [71.75, 29.15], [72.0, 29.25], [72.25, 29.15], [72.5, 29.25], [73.03, 29.03], [73.18, 28.68], [73.53, 28.53], [73.75, 28.0], [73.65, 27.75], [73.68, 27.68], [74.03, 27.53], [74.25, 27.0], [74.03, 26.47], [73.5, 26.25], [73.25, 26.35], [73.0, 26.25], [72.75, 26.35], [72.5, 26.25], [72.25, 26.35], [72.18, 26.32], [72.03, 25.97], [71.5, 25.75], [70.97, 25.97], [70.82, 26.32], [70.75, 26.35], [70.5, 26.25], [70.25, 26.35], [70.0, 26.25], [69.75, 26.35], [69.5, 26.25]]]]}, "2024-08-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[70.75, 28.5], [70.97, 29.03], [71.5, 29.25], [71.75, 29.15], [72.0, 29.25], [72.25, 29.15], [72.5, 29.25], [73.03, 29.03], [73.18, 28.68], [73.53, 28.53], [73.75, 28.0], [73.53, 27.47], [73.0, 27.25], [72.75, 27.35], [72.5, 27.25], [72.25, 27.35], [72.0, 27.25], [71.75, 27.35], [71.5, 27.25], [70.97, 27.47], [70.75, 28.0], [70.85, 28.25], [70.75, 28.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.290082323238778}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.9833866908550806}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [28.13032403574863, 28.991773873310137, 28.490465666549312, 28.080162276487442, 29.027596067157617, 30.21644859266462]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [28.00601692607961, 28.857669545035435, 27.165807458455276, 26.554931283952897, 27.394827240581947, 29.445267528130614]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.094067960412208, -3.187306057509659, -2.842543427639112, -3.4970483872634683, -2.5155810404884615, -2.5847760313037935]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.290082323238778, -3.5820261644955735, -3.6115734723715605, -4.077696884854902, -3.1899987869115307, -2.888285150699005]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.1226772147917816, -1.7069464270620553, -1.5977068447416354, -1.9923138689650628, -1.4750172494704954, -1.3997196430245633]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.1365991081723044, -1.845446392284756, -2.0037507032766078, -2.360090624079475, -1.7770394004892682, -1.504055892490422]}}