{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:02:06.439661", "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": "2015-Jan-20_to_2015-Jan-25_108.0_-2.5"}, "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": 2015010000956}, "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": "January 20 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 25 2015"}, "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": 89538.65049975048}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.E.Asia"]}, "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": ["Java Sea", "South China 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": -2.5}, "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": 108.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "108.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 106.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 109.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -4.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -0.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-01-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[108.0, -1.75], [108.53, -1.97], [108.75, -2.5], [108.53, -3.03], [108.0, -3.25], [107.47, -3.03], [107.25, -2.5], [107.47, -1.97], [108.0, -1.75]]]]}, "2015-01-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[106.35, -3.25], [106.25, -3.0], [106.35, -2.75], [106.25, -2.5], [106.47, -1.97], [107.0, -1.75], [107.25, -1.85], [107.5, -1.75], [107.75, -1.85], [108.0, -1.75], [108.53, -1.97], [108.75, -2.5], [108.53, -3.03], [108.18, -3.18], [108.15, -3.25], [108.25, -3.5], [108.15, -3.75], [108.25, -4.0], [108.03, -4.53], [107.5, -4.75], [107.25, -4.65], [107.0, -4.75], [106.47, -4.53], [106.25, -4.0], [106.35, -3.75], [106.25, -3.5], [106.35, -3.25]]]]}, "2015-01-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[105.85, -1.75], [105.75, -1.5], [105.97, -0.97], [106.5, -0.75], [106.75, -0.85], [107.0, -0.75], [107.25, -0.85], [107.5, -0.75], [108.03, -0.97], [108.25, -1.5], [108.15, -1.75], [108.18, -1.82], [108.53, -1.97], [108.75, -2.5], [108.63, -2.8], [109.03, -2.97], [109.25, -3.5], [109.03, -4.03], [108.5, -4.25], [108.25, -4.15], [108.18, -4.18], [108.03, -4.53], [107.5, -4.75], [107.25, -4.65], [107.0, -4.75], [106.47, -4.53], [106.32, -4.18], [105.97, -4.03], [105.75, -3.5], [105.96, -3.0], [105.75, -2.5], [105.85, -2.25], [105.75, -2.0], [105.85, -1.75]]]]}, "2015-01-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[105.85, -1.75], [105.75, -1.5], [105.97, -0.97], [106.5, -0.75], [106.75, -0.85], [107.0, -0.75], [107.25, -0.85], [107.5, -0.75], [108.0, -0.96], [108.32, -0.82], [108.47, -0.47], [109.0, -0.25], [109.53, -0.47], [109.75, -1.0], [109.53, -1.53], [109.18, -1.68], [109.15, -1.75], [109.18, -1.82], [109.53, -1.97], [109.68, -2.32], [110.03, -2.47], [110.25, -3.0], [110.03, -3.53], [109.68, -3.68], [109.53, -4.03], [109.0, -4.25], [108.75, -4.15], [108.5, -4.25], [108.25, -4.15], [108.18, -4.18], [108.03, -4.53], [107.5, -4.75], [107.25, -4.65], [107.0, -4.75], [106.47, -4.53], [106.32, -4.18], [105.97, -4.03], [105.75, -3.5], [105.96, -3.0], [105.75, -2.5], [105.85, -2.25], [105.75, -2.0], [105.85, -1.75]]]]}, "2015-01-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[105.85, -1.75], [105.75, -1.5], [105.97, -0.97], [106.5, -0.75], [106.75, -0.85], [107.0, -0.75], [107.25, -0.85], [107.5, -0.75], [108.0, -0.96], [108.32, -0.82], [108.47, -0.47], [109.0, -0.25], [109.53, -0.47], [109.75, -1.0], [109.53, -1.53], [109.18, -1.68], [109.15, -1.75], [109.18, -1.82], [109.53, -1.97], [109.68, -2.32], [110.03, -2.47], [110.25, -3.0], [110.03, -3.53], [109.68, -3.68], [109.53, -4.03], [109.0, -4.25], [108.75, -4.15], [108.5, -4.25], [108.25, -4.15], [108.0, -4.25], [107.75, -4.15], [107.5, -4.25], [107.25, -4.15], [107.0, -4.25], [106.75, -4.15], [106.5, -4.25], [105.97, -4.03], [105.75, -3.5], [105.96, -3.0], [105.75, -2.5], [105.85, -2.25], [105.75, -2.0], [105.85, -1.75]]]]}, "2015-01-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[107.82, -1.32], [107.97, -0.97], [108.32, -0.82], [108.47, 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"evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.86073793839853, 25.761212438152086, 25.49556419832004, 25.34344775376212, 25.466743552781793, 25.877303075787268]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.7586336714982167, -0.6842535169409353, -0.9938689559494228, -0.9713991761467253, -0.9188181862496619, -0.8364308000883227]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-0.7586336714982167, -0.8673021116565565, -1.2273567524172222, -1.127487840308163, -1.2653100593920499, -0.990435691515188]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.389145733027176, -1.4013827272018047, -1.9824275416918598, -1.9302000082142161, -1.792456546434345, -1.621899906297109]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.389145733027176, -1.6823863629994693, -2.5135610171970075, -2.2904530619349366, -2.482773491327033, -1.931378027024836]}}