{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:53:52.576549", "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": "2023-Jun-24_to_2023-Jun-29_59.0_22.5"}, "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": 2023060000897}, "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": "June 24 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 29 2023"}, "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": 74529.37599573427}, "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": ["Oman"]}, "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": ["Arabian Sea"]}, "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": 22.5}, "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": 59.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "59.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 57.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 59.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 20.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 23.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[56.47, 23.03], [56.82, 23.18], [56.85, 23.25], [56.75, 23.5], [56.97, 24.03], [57.5, 24.25], [58.03, 24.03], [58.18, 23.68], [58.25, 23.65], [58.5, 23.75], [59.03, 23.53], [59.18, 23.18], [59.25, 23.15], [59.5, 23.25], [60.03, 23.03], [60.25, 22.5], [60.15, 22.25], [60.25, 22.0], [60.03, 21.47], [59.68, 21.32], [59.53, 20.97], [59.18, 20.82], [59.03, 20.47], [58.68, 20.32], [58.53, 19.97], [58.0, 19.75], [57.75, 19.85], [57.5, 19.75], [56.97, 19.97], [56.75, 20.5], [56.85, 20.75], [56.82, 20.82], [56.47, 20.97], [56.25, 21.5], [56.35, 21.75], [56.25, 22.0], [56.35, 22.25], [56.25, 22.5], [56.47, 23.03]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Arabian-Peninsula", "Arabian-Sea"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-06-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[58.97, 22.53], [59.5, 22.75], [60.03, 22.53], [60.25, 22.0], [60.03, 21.47], [59.5, 21.25], [58.97, 21.47], [58.75, 22.0], [58.97, 22.53]]]]}, "2023-06-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[58.35, 22.25], [58.25, 22.5], [58.47, 23.03], [59.0, 23.25], [59.25, 23.15], [59.5, 23.25], [60.03, 23.03], [60.25, 22.5], [60.15, 22.25], [60.25, 22.0], [60.03, 21.47], [59.68, 21.32], [59.53, 20.97], [59.0, 20.75], [58.75, 20.85], [58.5, 20.75], [57.97, 20.97], [57.75, 21.5], [57.97, 22.03], [58.32, 22.18], [58.35, 22.25]]]]}, "2023-06-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[57.25, 22.0], [57.47, 22.53], [57.82, 22.68], [57.93, 22.93], [57.5, 22.75], [56.97, 22.97], [56.75, 23.5], [56.97, 24.03], [57.5, 24.25], [58.03, 24.03], [58.25, 23.5], [58.07, 23.07], [58.5, 23.25], [58.75, 23.15], [59.0, 23.25], [59.25, 23.15], [59.5, 23.25], [60.03, 23.03], [60.25, 22.5], [60.15, 22.25], [60.25, 22.0], [60.03, 21.47], [59.68, 21.32], [59.53, 20.97], [59.0, 20.75], [58.75, 20.85], [58.5, 20.75], [58.25, 20.85], [58.0, 20.75], [57.47, 20.97], [57.25, 21.5], [57.35, 21.75], [57.25, 22.0]]]]}, "2023-06-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[56.25, 22.0], [56.35, 22.25], [56.25, 22.5], [56.47, 23.03], [56.82, 23.18], [56.85, 23.25], [56.75, 23.5], [56.97, 24.03], [57.5, 24.25], [58.03, 24.03], [58.18, 23.68], [58.25, 23.65], [58.5, 23.75], [59.03, 23.53], [59.18, 23.18], [59.25, 23.15], [59.5, 23.25], [60.03, 23.03], [60.25, 22.5], [60.15, 22.25], [60.25, 22.0], [60.03, 21.47], [59.68, 21.32], [59.53, 20.97], [59.18, 20.82], [59.03, 20.47], [58.68, 20.32], [58.53, 19.97], [58.0, 19.75], [57.75, 19.85], [57.5, 19.75], [56.97, 19.97], [56.75, 20.5], [56.85, 20.75], [56.82, 20.82], [56.47, 20.97], [56.25, 21.5], [56.35, 21.75], [56.25, 22.0]]]]}, "2023-06-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[56.25, 22.0], [56.35, 22.25], [56.25, 22.5], [56.47, 23.03], [56.82, 23.18], [56.85, 23.25], [56.75, 23.5], [56.97, 24.03], [57.5, 24.25], [58.03, 24.03], [58.18, 23.68], [58.25, 23.65], [58.5, 23.75], [59.03, 23.53], [59.18, 23.18], [59.25, 23.15], [59.5, 23.25], [60.03, 23.03], [60.25, 22.5], [60.15, 22.25], [60.25, 22.0], [60.03, 21.47], [59.68, 21.32], [59.53, 20.97], [59.18, 20.82], [59.03, 20.47], [58.68, 20.32], [58.53, 19.97], [58.0, 19.75], [57.75, 19.85], [57.5, 19.75], [56.97, 19.97], [56.75, 20.5], [56.85, 20.75], [56.82, 20.82], [56.47, 20.97], [56.25, 21.5], [56.35, 21.75], [56.25, 22.0]]]]}, "2023-06-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[56.25, 22.0], [56.35, 22.25], [56.25, 22.5], [56.47, 23.03], [56.82, 23.18], [56.97, 23.53], [57.5, 23.75], [57.75, 23.65], [58.0, 23.75], [58.25, 23.65], [58.5, 23.75], [59.03, 23.53], [59.18, 23.18], [59.25, 23.15], [59.5, 23.25], [60.03, 23.03], [60.25, 22.5], [60.03, 21.97], [59.68, 21.82], [59.65, 21.75], [59.75, 21.5], [59.53, 20.97], [59.18, 20.82], [59.03, 20.47], [58.68, 20.32], [58.53, 19.97], [58.0, 19.75], [57.75, 19.85], [57.5, 19.75], [56.97, 19.97], [56.75, 20.5], [56.85, 20.75], [56.82, 20.82], [56.47, 20.97], [56.25, 21.5], [56.35, 21.75], [56.25, 22.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.731089967794048}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.4819488035945865}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [29.367821835130542, 30.10764368029112, 31.163794421856153, 31.52123974982038, 30.937323038182683, 31.16579973441793]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [29.367821835130542, 28.93252803493459, 28.893425371527087, 28.953595926959053, 28.43362067749706, 28.857765709929083]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.9971116773717768, -2.6539528235879573, -2.8458295633012964, -3.3089470056954267, -3.9003604143998873, -3.776510033341632]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.9971116773717768, -3.355255939912979, -3.4864633267692966, -4.20524806028385, -5.731089967794048, -5.076387568498035]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3384672064420542, -1.4835867928078457, -1.4896996986830013, -1.6691021820261336, -1.9555469033284558, -1.8897210264485853]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.3384672064420542, -1.7979407493766077, -1.7932446690553716, -2.2901275876877474, -2.4791502818206275, -2.315230184906967]}}