{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:53:40.980305", "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-05_to_2023-Jun-11_104.5_15.0"}, "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": 2023060000274}, "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 05 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 11 2023"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": 59870.491302875234}, "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", "Thailand"]}, "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": 15.0}, "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": 104.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "104.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 103.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 107.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 13.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 15.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[102.97, 15.53], [103.5, 15.75], [103.75, 15.65], [104.0, 15.75], [104.25, 15.65], [104.32, 15.68], [104.47, 16.03], [105.0, 16.25], [105.53, 16.03], [105.75, 15.5], [105.65, 15.25], [105.68, 15.18], [105.75, 15.15], [106.0, 15.25], [106.25, 15.15], [106.5, 15.25], [107.03, 15.03], [107.18, 14.68], [107.53, 14.53], [107.75, 14.0], [107.53, 13.47], [107.0, 13.25], [106.75, 13.35], [106.68, 13.32], [106.53, 12.97], [106.0, 12.75], [105.47, 12.97], [105.32, 13.32], [105.25, 13.35], [105.0, 13.25], [104.75, 13.35], [104.5, 13.25], [104.25, 13.35], [104.0, 13.25], [103.47, 13.47], [103.32, 13.82], [102.97, 13.97], [102.75, 14.5], [102.85, 14.75], [102.75, 15.0], [102.97, 15.53]]]]}}, "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": {"2023-06-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[102.75, 15.0], [102.97, 15.53], [103.5, 15.75], [103.75, 15.65], [104.0, 15.75], [104.25, 15.65], 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[104.5, 13.25], [104.25, 13.35], [104.0, 13.25], [103.47, 13.47], [103.32, 13.82], [102.97, 13.97], [102.75, 14.5], [102.85, 14.75], [102.75, 15.0]]]]}, "2023-06-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[102.75, 15.0], [102.97, 15.53], [103.5, 15.75], [103.75, 15.65], [104.0, 15.75], [104.25, 15.65], [104.32, 15.68], [104.47, 16.03], [105.0, 16.25], [105.53, 16.03], [105.75, 15.5], [105.65, 15.25], [105.68, 15.18], [105.75, 15.15], [106.0, 15.25], [106.25, 15.15], [106.5, 15.25], [107.03, 15.03], [107.18, 14.68], [107.53, 14.53], [107.75, 14.0], [107.53, 13.47], [107.0, 13.25], [106.75, 13.35], [106.68, 13.32], [106.53, 12.97], [106.0, 12.75], [105.47, 12.97], [105.32, 13.32], [105.25, 13.35], [105.0, 13.25], [104.75, 13.35], [104.5, 13.25], [104.25, 13.35], [104.0, 13.25], [103.47, 13.47], [103.32, 13.82], [102.97, 13.97], [102.75, 14.5], [102.85, 14.75], [102.75, 15.0]]]]}, "2023-06-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[103.5, 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over entire duration", "value": -2.523906418014178}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.795779251261171}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.567322418891422, 26.26539438680129, 26.109352626222517, 26.49832029056404, 26.586240711902633, 26.928659993712017, 26.867013866075922]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.488296581971156, 25.04898594633073, 24.72132694079704, 25.138503993376673, 25.195641428166994, 26.212556605461145, 26.31240365793542]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.920015957949848, -1.8394505836182957, -2.0079833532226674, -1.5128573747002216, -1.5840474655367036, -1.6671931197655852, -1.6948979094057108]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.523906418014178, -2.2093180169849234, -2.4424448327143296, -1.8088492113457733, -2.062774249287145, -1.7014941647138926, -1.9009984484367237]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6907131031097833, -1.6813272891723952, -1.8207977911150768, -1.3783036381989973, -1.3757679934586053, -1.349521813677355, -1.2998593173319168]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.179880871997762, -2.0622045214043343, -2.1181240464578392, -1.5290759612934242, -1.6657154987180587, -1.3595312652374678, -1.4207238885386162]}}