{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:03:39.585860", "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": "2015-Aug-31_to_2015-Sep-04_91.0_25.0"}, "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": 2015080001098}, "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 31 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 04 2015"}, "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": 53459.906225622035}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.Asia"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["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": 25.0}, "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": 91.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "91.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 89.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 92.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 22.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 26.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-08-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[88.75, 25.0], [88.97, 25.53], [89.5, 25.75], [89.75, 25.65], [90.0, 25.75], [90.5, 25.54], [91.0, 25.75], [91.53, 25.53], [91.68, 25.18], [92.03, 25.03], [92.18, 24.68], [92.53, 24.53], [92.68, 24.18], [93.03, 24.03], [93.25, 23.5], [93.03, 22.97], [92.68, 22.82], [92.53, 22.47], [92.0, 22.25], [91.47, 22.47], [91.32, 22.82], [90.97, 22.97], [90.8, 23.38], [90.5, 23.25], [90.25, 23.35], [90.0, 23.25], [89.47, 23.47], [89.25, 24.0], [89.35, 24.25], [89.32, 24.32], [88.97, 24.47], [88.75, 25.0]]]]}, "2015-09-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[88.75, 25.0], [88.97, 25.53], [89.5, 25.75], [89.75, 25.65], [90.0, 25.75], [90.5, 25.54], [91.0, 25.75], [91.53, 25.53], [91.68, 25.18], [92.03, 25.03], [92.18, 24.68], [92.53, 24.53], [92.68, 24.18], [93.03, 24.03], [93.25, 23.5], [93.03, 22.97], [92.68, 22.82], [92.53, 22.47], [92.0, 22.25], [91.47, 22.47], [91.32, 22.82], [90.97, 22.97], [90.8, 23.38], [90.5, 23.25], [90.25, 23.35], [90.0, 23.25], [89.47, 23.47], [89.25, 24.0], [89.35, 24.25], [89.32, 24.32], [88.97, 24.47], [88.75, 25.0]]]]}, "2015-09-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[88.75, 25.0], [88.97, 25.53], [89.32, 25.68], [89.47, 26.03], [89.82, 26.18], [89.97, 26.53], [90.5, 26.75], [91.03, 26.53], [91.25, 26.0], [91.15, 25.75], [91.18, 25.68], [91.53, 25.53], [91.68, 25.18], [92.03, 25.03], [92.18, 24.68], [92.53, 24.53], [92.68, 24.18], [93.03, 24.03], [93.25, 23.5], [93.03, 22.97], [92.68, 22.82], [92.53, 22.47], [92.0, 22.25], [91.47, 22.47], [91.32, 22.82], [90.97, 22.97], [90.8, 23.38], [90.5, 23.25], [90.25, 23.35], [90.0, 23.25], [89.47, 23.47], [89.25, 24.0], [89.35, 24.25], [89.32, 24.32], [88.97, 24.47], [88.75, 25.0]]]]}, "2015-09-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[89.25, 25.5], [89.47, 26.03], [89.82, 26.18], [89.97, 26.53], [90.5, 26.75], [91.03, 26.53], [91.25, 26.0], [91.15, 25.75], [91.18, 25.68], [91.53, 25.53], [91.68, 25.18], [92.03, 25.03], [92.25, 24.5], [92.03, 23.97], [91.5, 23.75], [90.97, 23.97], [90.82, 24.32], [90.75, 24.35], [90.5, 24.25], [89.97, 24.47], [89.82, 24.82], [89.47, 24.97], [89.25, 25.5]]]]}, "2015-09-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[89.25, 25.5], [89.47, 26.03], [89.82, 26.18], [89.97, 26.53], [90.5, 26.75], [91.03, 26.53], [91.25, 26.0], [91.15, 25.75], [91.18, 25.68], [91.53, 25.53], [91.75, 25.0], [91.53, 24.47], [91.0, 24.25], [90.75, 24.35], [90.5, 24.25], [89.97, 24.47], [89.82, 24.82], [89.47, 24.97], [89.25, 25.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.5577285874243216}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.8197678978006915}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.3487707630822, 26.501322380487352, 26.12815437568372, 26.23370538901503, 25.719498807788625]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.21621001830073, 24.322218096736776, 24.31662686895976, 24.619375408297742, 24.332331641098108]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.8365297617592546, -1.6607677710811874, -1.9093471562626225, -1.6806449804354127, -2.0730290047665108]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.323278489090228, -2.2471599799977184, -2.4640283146576394, -1.8135051432024625, -2.5577285874243216]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7910539376768044, -1.6076089633668948, -1.8037444800711309, -1.4976445512565328, -1.8733302326224273]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.201343418127658, -2.0203490919052385, -2.236102140657585, -1.5743020741326617, -2.2538060726274907]}}