{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:13:29.618488", "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": "2021-Sep-20_to_2021-Sep-22_122.0_-0.5"}, "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": 2021090000684}, "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": "September 20 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 22 2021"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 135876.3440058179}, "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"]}, "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": ["Celebes Basin", "Celebes Sea", "Molucca 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": -0.5}, "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": 122.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "122.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 121.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 125.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -0.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 4.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[121.5, 0.75], [121.75, 0.65], [121.88, 0.7], [121.82, 0.82], [121.47, 0.97], [121.25, 1.5], [121.47, 2.03], [121.82, 2.18], [121.85, 2.25], [121.75, 2.5], [121.85, 2.75], [121.82, 2.82], [121.47, 2.97], [121.32, 3.32], [120.97, 3.47], [120.75, 4.0], [120.97, 4.53], [121.5, 4.75], [121.75, 4.65], [122.0, 4.75], [122.25, 4.65], [122.5, 4.75], [123.03, 4.53], [123.2, 4.13], [123.5, 4.25], [123.75, 4.15], [124.0, 4.25], [124.25, 4.15], [124.32, 4.18], [124.47, 4.53], [125.0, 4.75], [125.53, 4.53], [125.75, 4.0], [125.65, 3.75], [125.68, 3.68], [126.03, 3.53], [126.25, 3.0], [126.15, 2.75], [126.25, 2.5], [126.03, 1.97], [125.5, 1.75], [125.25, 1.85], [125.18, 1.82], [125.03, 1.47], [124.68, 1.32], [124.53, 0.97], [124.0, 0.75], [123.75, 0.85], [123.68, 0.82], [123.65, 0.75], [123.75, 0.5], [123.65, 0.25], [123.75, 0.0], [123.53, -0.53], [123.18, -0.68], [123.03, -1.03], [122.5, -1.25], [122.25, -1.15], [122.0, -1.25], [121.75, -1.15], [121.5, -1.25], [120.97, -1.03], [120.75, -0.5], [120.85, -0.25], [120.75, 0.0], [120.97, 0.53], [121.5, 0.75]]]]}}, "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": {"2021-09-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[120.75, 0.0], [120.97, 0.53], [121.5, 0.75], [121.75, 0.65], [121.88, 0.7], [121.82, 0.82], [121.47, 0.97], [121.25, 1.5], [121.47, 2.03], [121.82, 2.18], [121.85, 2.25], [121.75, 2.5], [121.85, 2.75], [121.82, 2.82], [121.47, 2.97], [121.32, 3.32], [120.97, 3.47], [120.75, 4.0], [120.97, 4.53], [121.5, 4.75], [121.75, 4.65], [122.0, 4.75], [122.25, 4.65], [122.5, 4.75], [123.03, 4.53], [123.2, 4.13], [123.5, 4.25], [123.75, 4.15], [124.0, 4.25], [124.25, 4.15], [124.32, 4.18], [124.47, 4.53], [125.0, 4.75], [125.53, 4.53], [125.75, 4.0], [125.65, 3.75], [125.68, 3.68], [126.03, 3.53], [126.25, 3.0], [126.15, 2.75], [126.25, 2.5], [126.03, 1.97], [125.5, 1.75], [125.25, 1.85], [125.18, 1.82], [125.03, 1.47], [124.68, 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4.25], [124.25, 4.15], [124.32, 4.18], [124.47, 4.53], [125.0, 4.75], [125.53, 4.53], [125.75, 4.0], [125.65, 3.75], [125.68, 3.68], [126.03, 3.53], [126.25, 3.0], [126.15, 2.75], [126.25, 2.5], [126.03, 1.97], [125.5, 1.75], [125.25, 1.85], [125.18, 1.82], [125.03, 1.47], [124.68, 1.32], [124.53, 0.97], [124.0, 0.75], [123.75, 0.85], [123.68, 0.82], [123.65, 0.75], [123.75, 0.5], [123.65, 0.25], [123.75, 0.0], [123.53, -0.53], [123.18, -0.68], [123.03, -1.03], [122.5, -1.25], [122.25, -1.15], [122.0, -1.25], [121.75, -1.15], [121.5, -1.25], [120.97, -1.03], [120.75, -0.5], [120.85, -0.25], [120.75, 0.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.6525697163315272}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.1454666307437444}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.462751028893138, 26.45802680713274, 26.379283855489007]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.162813630753476, 24.828305328324006, 24.71120006143002]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.100699870747864, -1.1247955188848302, -1.2109045025985394]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.6525697163315272, -1.6206448344235014, -1.5744127814299418]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.881061733100595, -1.9362645466875146, -2.086999959454346]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.5791449828233306, -2.934943483609151, -2.616915018259495]}}