{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:19:16.100925", "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": "2022-Apr-06_to_2022-Apr-09_110.5_-1.0"}, "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": 2022040000245}, "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": "April 06 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 09 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 64901.5726327845}, "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": ["Indonesia", "Malaysia"]}, "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": -1.0}, "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": 110.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "110.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 109.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 111.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -2.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 2.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[110.0, -2.75], [109.47, -2.53], [109.25, -2.0], [109.46, -1.5], [109.32, -1.18], [108.97, -1.03], [108.75, -0.5], [108.85, -0.25], [108.75, 0.0], [108.96, 0.5], [108.75, 1.0], [108.97, 1.53], [109.5, 1.75], [109.75, 1.65], [109.82, 1.68], [109.97, 2.03], [110.5, 2.25], [110.75, 2.15], [110.82, 2.18], [110.97, 2.53], [111.5, 2.75], [112.03, 2.53], [112.25, 2.0], [112.03, 1.47], [111.68, 1.32], [111.53, 0.97], [111.13, 0.8], [111.18, 0.68], [111.53, 0.53], [111.75, 0.0], [111.65, -0.25], [111.75, -0.5], [111.65, -0.75], [111.75, -1.0], [111.65, -1.25], [111.75, -1.5], [111.53, -2.03], [111.0, -2.25], [110.75, -2.15], [110.68, -2.18], [110.53, -2.53], [110.0, -2.75]]]]}}, "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": {"2022-04-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[109.25, -1.0], [109.47, -0.47], [110.0, -0.25], [110.25, -0.35], [110.5, -0.25], [111.03, -0.47], [111.25, -1.0], [111.03, -1.53], [110.63, -1.7], [110.75, -2.0], [110.53, -2.53], [110.0, -2.75], [109.47, -2.53], [109.25, -2.0], [109.46, -1.5], [109.25, -1.0]]]]}, "2022-04-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[108.75, 0.0], [108.96, 0.5], [108.75, 1.0], [108.97, 1.53], [109.5, 1.75], [109.75, 1.65], [109.82, 1.68], [109.97, 2.03], [110.5, 2.25], [110.75, 2.15], [110.82, 2.18], [110.97, 2.53], [111.5, 2.75], [112.03, 2.53], [112.25, 2.0], [112.03, 1.47], [111.68, 1.32], [111.53, 0.97], [111.13, 0.8], [111.18, 0.68], [111.53, 0.53], [111.75, 0.0], [111.65, -0.25], [111.75, -0.5], [111.65, -0.75], [111.75, -1.0], [111.65, -1.25], [111.75, -1.5], [111.53, -2.03], [111.0, -2.25], [110.75, -2.15], [110.68, -2.18], [110.53, -2.53], [110.0, -2.75], [109.47, -2.53], [109.25, -2.0], [109.46, -1.5], [109.32, -1.18], [108.97, -1.03], [108.75, -0.5], [108.85, -0.25], [108.75, 0.0]]]]}, "2022-04-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[108.75, 0.0], [108.96, 0.5], [108.75, 1.0], [108.97, 1.53], [109.5, 1.75], [109.75, 1.65], [109.82, 1.68], [109.97, 2.03], [110.5, 2.25], [110.75, 2.15], [110.82, 2.18], [110.97, 2.53], [111.5, 2.75], [112.03, 2.53], [112.25, 2.0], [112.03, 1.47], [111.68, 1.32], [111.53, 0.97], [111.13, 0.8], [111.18, 0.68], [111.53, 0.53], [111.75, 0.0], [111.65, -0.25], [111.75, -0.5], [111.65, -0.75], [111.75, -1.0], [111.65, -1.25], [111.75, -1.5], [111.53, -2.03], [111.0, -2.25], [110.75, -2.15], [110.68, -2.18], [110.53, -2.53], [110.0, -2.75], [109.47, -2.53], [109.25, -2.0], [109.46, -1.5], [109.32, -1.18], [108.97, -1.03], [108.75, -0.5], [108.85, -0.25], [108.75, 0.0]]]]}, "2022-04-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[108.75, 0.0], [108.96, 0.5], [108.75, 1.0], [108.97, 1.53], [109.5, 1.75], [109.75, 1.65], [109.82, 1.68], [109.97, 2.03], [110.5, 2.25], [110.75, 2.15], [110.82, 2.18], [110.97, 2.53], [111.5, 2.75], [112.03, 2.53], [112.25, 2.0], [112.03, 1.47], [111.68, 1.32], [111.53, 0.97], [111.13, 0.8], [111.18, 0.68], [111.53, 0.53], [111.75, 0.0], [111.65, -0.25], [111.75, -0.5], [111.65, -0.75], [111.75, -1.0], [111.65, -1.25], [111.75, -1.5], [111.53, -2.03], [111.0, -2.25], [110.75, -2.15], [110.68, -2.18], [110.53, -2.53], [110.0, -2.75], [109.47, -2.53], [109.25, -2.0], [109.46, -1.5], [109.32, -1.18], [108.97, -1.03], [108.75, -0.5], [108.85, -0.25], [108.75, 0.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.7175578987638573}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.264239491415206}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.44593833446646, 24.747270789832896, 24.75514216215123, 24.76421015871324]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.86030969774248, 22.57732629211796, 22.93720279974349, 22.75991578221368]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.963456515794879, -1.2811694895625172, -1.2775295878322617, -1.2769883933680284]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.0077412121348743, -1.5486458622800683, -1.7175578987638573, -1.6666711737538549]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.493251176194077, -1.7798420760981104, -1.8120881368517592, -1.768228590357557]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7861214201789475, -2.0760680851726545, -2.3667649685330416, -2.3261689293124843]}}