{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:02:17.810531", "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-Feb-15_to_2015-Feb-20_81.0_6.5"}, "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": 2015020000626}, "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": "February 15 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 20 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": 64356.17290088914}, "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": ["Sri Lanka"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Bay-of-Bengal", "Equatorial.Indian-Ocean", "S.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": ["Bay of Bengal", "Laccadive 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": 6.5}, "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": 81.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "81.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 79.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 81.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 5.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 9.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-02-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[81.53, 7.53], [81.68, 7.18], [82.03, 7.03], [82.25, 6.5], [82.03, 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"2015-02-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[79.46, 7.0], [79.25, 7.5], [79.35, 7.75], [79.25, 8.0], [79.35, 8.25], [79.25, 8.5], [79.35, 8.75], [79.25, 9.0], [79.47, 9.53], [80.0, 9.75], [80.25, 9.65], [80.5, 9.75], [81.03, 9.53], [81.18, 9.18], [81.53, 9.03], [81.75, 8.5], [81.65, 8.25], [81.68, 8.18], [82.03, 8.03], [82.25, 7.5], [82.15, 7.25], [82.25, 7.0], [82.15, 6.75], [82.25, 6.5], [82.03, 5.97], [81.5, 5.75], [81.25, 5.85], [81.18, 5.82], [81.03, 5.47], [80.5, 5.25], [80.25, 5.35], [80.0, 5.25], [79.47, 5.47], [79.25, 6.0], [79.35, 6.25], [79.25, 6.5], [79.46, 7.0]]]]}, "2015-02-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[79.46, 7.0], [79.25, 7.5], [79.35, 7.75], [79.25, 8.0], [79.35, 8.25], [79.25, 8.5], [79.35, 8.75], [79.25, 9.0], [79.47, 9.53], [80.0, 9.75], [80.25, 9.65], [80.5, 9.75], [81.03, 9.53], [81.18, 9.18], [81.53, 9.03], [81.75, 8.5], [81.65, 8.25], [81.68, 8.18], [82.03, 8.03], [82.25, 7.5], [82.15, 7.25], 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"description": "The daily evolution of mean t2m anomalies.", "value": [-1.3850107498416508, -1.5874909403118482, -1.8119438392109775, -1.6594799071882156, -1.4483431261812658, -1.3288859587605373]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.469921749096386, -2.991345631254319, -2.7188286875839935, -2.277147414964702, -2.2298253444812417, -1.6640415060531382]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.717594234688684, -1.899952862987088, -2.2555249574273866, -2.054455606559545, -1.7810056386841577, -1.5536788689912466]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.493391697179332, -3.0416371707599463, -3.3584712323889496, -2.772145601651616, -2.3913753191048683, -1.7793706405479772]}}