{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:10:45.793454", "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-13_to_2026-Mar-18_96.0_26.0"}, "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": 2026030000415}, "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 13 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 18 2026"}, "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": 69075.26113000257}, "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", "Myanmar"]}, "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": 26.0}, "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": 96.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "96.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 93.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 97.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 24.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 28.25}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[97.65, 25.25], [97.75, 25.0], [97.53, 24.47], [97.0, 24.25], [96.75, 24.35], [96.5, 24.25], [96.0, 24.46], [95.5, 24.25], [94.97, 24.47], [94.75, 25.0], [94.97, 25.53], [95.32, 25.68], [95.35, 25.75], [95.25, 26.0], [95.35, 26.25], [95.32, 26.32], [95.25, 26.35], [95.0, 26.25], [94.75, 26.35], [94.68, 26.32], [94.53, 25.97], [94.0, 25.75], [93.47, 25.97], [93.25, 26.5], [93.35, 26.75], [93.25, 27.0], [93.47, 27.53], [93.82, 27.68], [93.97, 28.03], [94.32, 28.18], [94.47, 28.53], [95.0, 28.75], [95.25, 28.65], [95.5, 28.75], [95.75, 28.65], [96.0, 28.75], [96.25, 28.65], [96.5, 28.75], [97.03, 28.53], [97.25, 28.0], [97.03, 27.47], [96.68, 27.32], [96.63, 27.2], [96.75, 27.15], [97.0, 27.25], [97.53, 27.03], [97.75, 26.5], [97.65, 26.25], [97.75, 26.0], [97.65, 25.75], [97.75, 25.5], [97.65, 25.25]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Tibetan-Plateau", "S.Asia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-03-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[95.25, 26.0], [95.47, 26.53], [96.0, 26.75], [96.53, 26.53], [96.7, 26.13], [97.0, 26.25], [97.53, 26.03], [97.75, 25.5], [97.65, 25.25], [97.75, 25.0], [97.53, 24.47], [97.0, 24.25], [96.47, 24.47], [96.25, 25.0], [96.03, 24.47], [95.5, 24.25], [94.97, 24.47], [94.75, 25.0], [94.97, 25.53], [95.38, 25.7], [95.25, 26.0]], [[96.35, 25.25], [96.3, 25.38], [96.13, 25.3], [96.25, 25.0], [96.35, 25.25]]]]}, "2026-03-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[93.25, 27.0], [93.47, 27.53], [93.82, 27.68], [93.97, 28.03], [94.32, 28.18], [94.47, 28.53], [95.0, 28.75], [95.25, 28.65], [95.5, 28.75], [95.75, 28.65], [96.0, 28.75], [96.53, 28.53], [96.75, 28.0], [96.65, 27.75], [96.75, 27.5], [96.63, 27.2], [96.75, 27.15], [97.0, 27.25], [97.53, 27.03], [97.75, 26.5], [97.65, 26.25], [97.75, 26.0], [97.65, 25.75], [97.75, 25.5], [97.65, 25.25], [97.75, 25.0], [97.53, 24.47], [97.0, 24.25], [96.75, 24.35], [96.5, 24.25], [96.0, 24.46], [95.5, 24.25], [94.97, 24.47], [94.75, 25.0], [94.97, 25.53], [95.32, 25.68], [95.35, 25.75], [95.25, 26.0], [95.35, 26.25], [95.32, 26.32], [95.25, 26.35], [95.0, 26.25], [94.75, 26.35], [94.68, 26.32], [94.53, 25.97], [94.0, 25.75], [93.47, 25.97], [93.25, 26.5], [93.35, 26.75], [93.25, 27.0]]]]}, "2026-03-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[93.25, 27.0], [93.47, 27.53], [93.82, 27.68], [93.97, 28.03], [94.32, 28.18], [94.47, 28.53], [95.0, 28.75], [95.25, 28.65], [95.5, 28.75], [95.75, 28.65], [96.0, 28.75], [96.25, 28.65], [96.5, 28.75], [97.03, 28.53], [97.25, 28.0], [97.03, 27.47], [96.68, 27.32], [96.63, 27.2], [96.75, 27.15], [97.0, 27.25], [97.53, 27.03], [97.75, 26.5], [97.65, 26.25], [97.75, 26.0], [97.65, 25.75], [97.75, 25.5], [97.65, 25.25], [97.75, 25.0], [97.53, 24.47], [97.0, 24.25], [96.75, 24.35], [96.5, 24.25], [96.0, 24.46], [95.5, 24.25], [94.97, 24.47], [94.75, 25.0], [94.97, 25.53], [95.32, 25.68], [95.35, 25.75], [95.25, 26.0], [95.35, 26.25], [95.32, 26.32], [95.25, 26.35], [95.0, 26.25], [94.75, 26.35], [94.68, 26.32], [94.53, 25.97], [94.0, 25.75], [93.47, 25.97], [93.25, 26.5], [93.35, 26.75], [93.25, 27.0]]]]}, "2026-03-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[93.25, 27.0], [93.47, 27.53], [93.82, 27.68], [93.97, 28.03], [94.32, 28.18], [94.47, 28.53], [95.0, 28.75], [95.25, 28.65], [95.5, 28.75], [95.75, 28.65], [96.0, 28.75], [96.25, 28.65], [96.5, 28.75], [97.03, 28.53], [97.25, 28.0], [97.03, 27.47], [96.68, 27.32], [96.63, 27.2], [96.75, 27.15], [97.0, 27.25], [97.53, 27.03], [97.75, 26.5], [97.65, 26.25], [97.75, 26.0], [97.65, 25.75], [97.75, 25.5], [97.65, 25.25], [97.75, 25.0], [97.53, 24.47], [97.0, 24.25], [96.75, 24.35], [96.5, 24.25], [95.97, 24.47], [95.82, 24.82], [95.47, 24.97], [95.25, 25.5], [95.35, 25.75], [95.25, 26.0], [95.35, 26.25], [95.32, 26.32], [95.25, 26.35], [95.0, 26.25], [94.75, 26.35], [94.68, 26.32], [94.53, 25.97], [94.0, 25.75], [93.47, 25.97], [93.25, 26.5], [93.35, 26.75], [93.25, 27.0]]]]}, "2026-03-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[94.47, 28.53], [95.0, 28.75], [95.25, 28.65], [95.5, 28.75], [95.75, 28.65], [96.0, 28.75], [96.25, 28.65], [96.5, 28.75], [97.03, 28.53], [97.25, 28.0], [97.03, 27.47], [96.5, 27.25], [96.75, 27.15], [97.0, 27.25], [97.53, 27.03], [97.75, 26.5], [97.65, 26.25], [97.75, 26.0], [97.65, 25.75], [97.75, 25.5], [97.65, 25.25], [97.75, 25.0], [97.53, 24.47], [97.0, 24.25], [96.75, 24.35], [96.5, 24.25], [95.97, 24.47], [95.82, 24.82], [95.47, 24.97], [95.25, 25.5], [95.35, 25.75], [95.25, 26.0], [95.35, 26.25], [95.25, 26.5], [95.43, 26.93], [95.0, 26.75], [94.75, 26.85], [94.5, 26.75], [93.97, 26.97], [93.75, 27.5], [93.97, 28.03], [94.32, 28.18], [94.47, 28.53]], [[96.25, 27.35], [96.0, 27.25], [96.25, 27.15], [96.5, 27.25], [96.25, 27.35]], [[95.75, 27.35], [95.68, 27.32], [95.57, 27.07], [96.0, 27.25], [95.75, 27.35]]]]}, "2026-03-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[95.47, 27.03], [96.0, 27.25], [96.53, 27.03], [96.75, 26.5], [96.65, 26.25], [96.75, 26.0], [96.53, 25.47], [96.0, 25.25], [95.47, 25.47], [95.25, 26.0], [95.35, 26.25], [95.25, 26.5], [95.47, 27.03]]], [[[95.25, 28.0], [95.47, 28.53], [96.0, 28.75], [96.53, 28.53], [96.75, 28.0], [96.53, 27.47], [96.0, 27.25], [95.47, 27.47], [95.25, 28.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.391733704846956}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.1428911886882904}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [21.179790751139308, 18.750317721896693, 18.17932500203449, 18.443897077772363, 18.366841888427757, 18.09920781453451]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.470196024576865, 15.544422403971396, 8.952153778076195, 8.701777394612634, 8.464498138427757, 16.32267786661788]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.5044817498500436, -3.1060857701388875, -3.3586963614058187, -3.0602425032967537, -3.154015904849931, -3.0883201077714375]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.698763342289965, -4.325430455375113, -4.391733704846956, -4.159778869804541, -4.214911473508039, -3.399401553520704]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3907077460923079, -1.8199617755241257, -1.9535407146650314, -1.705197708568929, -1.6890150515022924, -1.5029737364027997]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4494511879131438, -2.2813691512140184, -2.521765874718137, -2.3447861859818775, -2.081425944467815, -1.7322651551454518]}}