{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:10:42.211661", "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": "2026-Mar-04_to_2026-Mar-08_105.5_13.5"}, "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": 2026030000186}, "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": "March 04 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 08 2026"}, "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": 51166.45693254877}, "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": ["Cambodia", "Lao People's Democratic Republic", "Viet Nam"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia", "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": 13.5}, "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": 105.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "105.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 104.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 107.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 10.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 14.75}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[103.97, 12.53], [104.32, 12.68], [104.46, 13.0], [104.25, 13.5], [104.35, 13.75], [104.25, 14.0], [104.47, 14.53], [104.82, 14.68], [104.97, 15.03], [105.5, 15.25], [106.03, 15.03], [106.18, 14.68], [106.25, 14.65], [106.5, 14.75], [106.75, 14.65], [106.82, 14.68], [106.97, 15.03], [107.5, 15.25], [108.03, 15.03], [108.25, 14.5], [108.15, 14.25], [108.25, 14.0], [108.03, 13.47], [107.5, 13.25], [107.25, 13.35], [107.0, 13.25], [106.75, 13.35], [106.5, 13.25], [106.25, 13.35], [106.18, 13.32], [106.15, 13.25], [106.25, 13.0], [106.03, 12.47], [105.68, 12.32], [105.65, 12.25], [105.75, 12.0], [105.54, 11.5], [105.75, 11.0], [105.53, 10.47], [105.0, 10.25], [104.75, 10.35], [104.5, 10.25], [103.97, 10.47], [103.75, 11.0], [103.85, 11.25], [103.75, 11.5], [103.85, 11.75], [103.75, 12.0], [103.97, 12.53]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.E.Asia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-03-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[104.75, 13.5], [104.97, 14.03], [105.5, 14.25], [105.8, 14.13], [105.97, 14.53], [106.5, 14.75], [106.75, 14.65], [107.0, 14.75], [107.53, 14.53], [107.75, 14.0], [107.53, 13.47], [107.0, 13.25], [106.75, 13.35], [106.5, 13.25], [106.2, 13.37], [106.15, 13.25], [106.25, 13.0], [106.03, 12.47], [105.5, 12.25], [104.97, 12.47], [104.75, 13.0], [104.85, 13.25], [104.75, 13.5]]]]}, "2026-03-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[103.75, 11.5], [103.85, 11.75], [103.75, 12.0], [103.97, 12.53], [104.32, 12.68], [104.46, 13.0], [104.25, 13.5], [104.35, 13.75], [104.25, 14.0], [104.47, 14.53], [104.82, 14.68], [104.97, 15.03], [105.5, 15.25], [106.03, 15.03], [106.18, 14.68], [106.25, 14.65], [106.5, 14.75], [106.75, 14.65], [106.82, 14.68], [106.97, 15.03], [107.5, 15.25], [108.03, 15.03], [108.25, 14.5], [108.15, 14.25], [108.25, 14.0], [108.03, 13.47], [107.5, 13.25], [107.25, 13.35], [107.0, 13.25], [106.75, 13.35], [106.5, 13.25], [106.25, 13.35], [106.18, 13.32], [106.15, 13.25], [106.25, 13.0], [106.03, 12.47], [105.68, 12.32], [105.65, 12.25], [105.75, 12.0], [105.53, 11.47], [105.18, 11.32], [105.15, 11.25], [105.25, 11.0], [105.03, 10.47], [104.5, 10.25], [103.97, 10.47], [103.75, 11.0], [103.85, 11.25], [103.75, 11.5]]]]}, "2026-03-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[103.75, 11.5], [103.85, 11.75], [103.75, 12.0], [103.97, 12.53], [104.32, 12.68], [104.46, 13.0], [104.25, 13.5], [104.35, 13.75], [104.25, 14.0], [104.47, 14.53], [104.82, 14.68], [104.97, 15.03], [105.5, 15.25], [106.03, 15.03], [106.18, 14.68], [106.25, 14.65], [106.5, 14.75], [106.75, 14.65], [106.82, 14.68], [106.97, 15.03], [107.5, 15.25], [108.03, 15.03], [108.25, 14.5], [108.15, 14.25], [108.25, 14.0], [108.03, 13.47], [107.5, 13.25], [107.25, 13.35], [107.0, 13.25], [106.75, 13.35], [106.5, 13.25], [106.25, 13.35], [106.18, 13.32], [106.15, 13.25], [106.25, 13.0], [106.03, 12.47], [105.68, 12.32], [105.65, 12.25], [105.75, 12.0], [105.54, 11.5], [105.75, 11.0], [105.53, 10.47], [105.0, 10.25], [104.75, 10.35], [104.5, 10.25], [103.97, 10.47], [103.75, 11.0], [103.85, 11.25], [103.75, 11.5]]]]}, "2026-03-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[103.75, 11.5], [103.85, 11.75], [103.75, 12.0], [103.97, 12.53], [104.32, 12.68], [104.46, 13.0], [104.25, 13.5], [104.35, 13.75], [104.25, 14.0], [104.47, 14.53], [104.82, 14.68], [104.97, 15.03], [105.5, 15.25], [106.03, 15.03], [106.18, 14.68], [106.25, 14.65], [106.5, 14.75], [106.75, 14.65], [106.82, 14.68], [106.97, 15.03], [107.5, 15.25], [108.03, 15.03], [108.25, 14.5], [108.15, 14.25], [108.25, 14.0], [108.03, 13.47], [107.5, 13.25], [107.25, 13.35], [107.0, 13.25], [106.75, 13.35], [106.5, 13.25], [106.25, 13.35], [106.18, 13.32], [106.15, 13.25], [106.25, 13.0], [106.03, 12.47], [105.68, 12.32], [105.65, 12.25], [105.75, 12.0], [105.54, 11.5], [105.75, 11.0], [105.53, 10.47], [105.0, 10.25], [104.75, 10.35], [104.5, 10.25], [103.97, 10.47], [103.75, 11.0], [103.85, 11.25], [103.75, 11.5]]]]}, "2026-03-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[103.75, 11.5], [103.85, 11.75], [103.75, 12.0], [103.97, 12.53], [104.32, 12.68], [104.46, 13.0], [104.25, 13.5], [104.35, 13.75], [104.25, 14.0], [104.47, 14.53], [104.82, 14.68], [104.97, 15.03], [105.5, 15.25], [106.03, 15.03], [106.18, 14.68], [106.25, 14.65], [106.5, 14.75], [107.03, 14.53], [107.25, 14.0], [107.03, 13.47], [106.5, 13.25], [106.25, 13.35], [106.18, 13.32], [106.15, 13.25], [106.25, 13.0], [106.03, 12.47], [105.68, 12.32], [105.65, 12.25], [105.75, 12.0], [105.54, 11.5], [105.75, 11.0], [105.53, 10.47], [105.0, 10.25], [104.75, 10.35], [104.5, 10.25], [103.97, 10.47], [103.75, 11.0], [103.85, 11.25], [103.75, 11.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.0485904132061705}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.511918187345511}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.89869079589846, 25.222531890869163, 26.679345104741174, 26.721622496960208, 27.324522363571873]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.522673543294275, 21.5342791239421, 22.011285400390648, 22.243978118896507, 25.63009923299154]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.3372157762517105, -3.6221741916337074, -2.2006593618384414, -2.190015472674879, -2.0618081701158695]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.6919219653265714, -5.0485904132061705, -3.092411575889514, -2.9310806984726696, -2.8362932070407965]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4711618419036239, -2.278012692266707, -1.4408573557165492, -1.5065354607577859, -1.5346744467096778]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.645979351254993, -3.038781541953203, -1.675802902022997, -1.7791233497739298, -1.9394013418566636]}}