{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:46:48.320264", "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": "2011-Feb-28_to_2011-Mar-08_124.5_-9.0"}, "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": 2011020001414}, "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 28 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 08 2011"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 9}, "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": 162266.02627949452}, "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", "Timor-Leste"]}, "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": ["Banda Sea", "Flores Sea", "Java Sea", "Savu 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": -9.0}, "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": 124.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "124.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 117.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 126.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -9.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -6.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-02-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[126.5, -6.75], [127.03, -6.97], [127.25, -7.5], [127.03, -8.03], [126.5, -8.25], [125.97, -8.03], [125.75, -7.5], [125.97, -6.97], [126.5, -6.75]]]]}, "2011-03-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[123.97, -7.47], [124.32, -7.32], [124.47, -6.97], [125.0, -6.75], [125.25, -6.85], [125.5, -6.75], [125.75, -6.85], [126.0, -6.75], [126.25, -6.85], [126.5, -6.75], [127.03, -6.97], [127.25, -7.5], [127.03, -8.03], [126.68, -8.18], [126.53, -8.53], [126.0, -8.75], [125.75, -8.65], [125.5, -8.75], [125.25, -8.65], [125.13, -8.7], [125.25, -9.0], [125.03, -9.53], [124.5, -9.75], [123.97, -9.53], [123.75, -9.0], [123.96, -8.5], [123.75, -8.0], [123.97, -7.47]]]]}, "2011-03-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[120.47, -8.53], [120.25, -8.0], [120.47, -7.47], [121.0, -7.25], [121.25, -7.35], [121.32, -7.32], [121.47, -6.97], [121.82, -6.82], [121.97, -6.47], [122.5, -6.25], [122.75, -6.35], [123.0, -6.25], [123.53, -6.47], [123.68, -6.82], [123.75, -6.85], [124.0, -6.75], [124.25, -6.85], [124.5, -6.75], [124.75, -6.85], [125.0, -6.75], [125.25, -6.85], [125.5, -6.75], [125.75, -6.85], [126.0, -6.75], [126.25, -6.85], [126.5, -6.75], [127.03, -6.97], [127.25, -7.5], [127.04, -8.0], [127.25, -8.5], [127.03, -9.03], [126.5, -9.25], [126.2, -9.13], [126.03, -9.53], [125.5, -9.75], [125.25, -9.65], [125.0, -9.75], [124.75, -9.65], [124.5, -9.75], [123.97, -9.53], [123.8, -9.13], [123.5, -9.25], [123.25, -9.15], [123.0, -9.25], [122.75, -9.15], [122.5, -9.25], [122.25, -9.15], [122.0, -9.25], [121.47, -9.03], [121.32, -8.68], [121.25, -8.65], [121.0, -8.75], [120.47, -8.53]]]]}, "2011-03-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[117.97, -6.47], [118.5, -6.25], [118.75, -6.35], [119.0, -6.25], [119.25, -6.35], [119.5, -6.25], [119.75, -6.35], [120.0, -6.25], [120.53, -6.47], [120.75, -7.0], [120.65, -7.25], [120.68, -7.32], [120.75, -7.35], [121.0, -7.25], [121.25, -7.35], [121.32, -7.32], [121.35, -7.25], [121.25, -7.0], [121.47, -6.47], [122.0, -6.25], [122.25, -6.35], [122.5, -6.25], [122.75, -6.35], [123.0, -6.25], [123.53, -6.47], [123.68, -6.82], [123.75, -6.85], [124.0, -6.75], [124.25, -6.85], [124.5, -6.75], [124.75, -6.85], [125.0, -6.75], [125.25, -6.85], [125.5, -6.75], [125.75, -6.85], [126.0, -6.75], [126.25, -6.85], [126.5, -6.75], [127.03, -6.97], [127.25, -7.5], [127.04, -8.0], [127.25, -8.5], [127.03, -9.03], [126.5, -9.25], [126.25, -9.15], [126.18, -9.18], [126.03, -9.53], [125.5, -9.75], [125.25, -9.65], [125.0, -9.75], [124.75, -9.65], [124.5, -9.75], [124.25, -9.65], [124.0, -9.75], [123.47, -9.53], [123.32, -9.18], [123.25, -9.15], [123.0, -9.25], [122.75, -9.15], [122.5, -9.25], [122.25, -9.15], [122.0, -9.25], [121.75, -9.15], [121.5, -9.25], [120.97, -9.03], [120.82, -8.68], [120.75, -8.65], [120.5, -8.75], [120.25, -8.65], [120.0, -8.75], [119.75, -8.65], [119.5, -8.75], [119.25, -8.65], [119.0, -8.75], [118.75, -8.65], [118.5, -8.75], [118.25, -8.65], [118.0, -8.75], [117.47, -8.53], [117.25, -8.0], [117.47, -7.47], [117.88, -7.3], [117.75, -7.0], [117.97, -6.47]]]]}, "2011-03-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[117.97, -6.47], [118.5, -6.25], [118.75, -6.35], [119.0, -6.25], [119.25, -6.35], [119.5, -6.25], [119.75, -6.35], [120.0, -6.25], [120.53, -6.47], [120.68, -6.82], [120.75, -6.85], [121.0, -6.75], [121.3, -6.87], [121.47, -6.47], [122.0, -6.25], [122.25, -6.35], [122.5, -6.25], [122.75, -6.35], [123.0, -6.25], [123.53, -6.47], [123.68, -6.82], [123.75, -6.85], [124.0, -6.75], [124.25, -6.85], [124.5, -6.75], [125.03, -6.97], [125.18, -7.32], [125.25, -7.35], [125.5, -7.25], [126.03, -7.47], [126.18, -7.82], [126.25, -7.85], [126.5, -7.75], [127.03, -7.97], [127.25, -8.5], [127.03, -9.03], [126.5, -9.25], [126.25, -9.15], [126.18, -9.18], [126.03, -9.53], [125.5, -9.75], [125.25, -9.65], [125.0, -9.75], [124.75, -9.65], [124.5, -9.75], [124.25, -9.65], [124.0, -9.75], [123.47, -9.53], [123.32, -9.18], [123.25, -9.15], [123.0, -9.25], [122.75, -9.15], [122.5, -9.25], [122.25, -9.15], [122.0, -9.25], [121.75, -9.15], [121.5, -9.25], [120.97, -9.03], [120.82, -8.68], [120.75, -8.65], [120.5, -8.75], [120.25, -8.65], [120.0, -8.75], [119.75, -8.65], [119.5, -8.75], [119.25, -8.65], [119.0, -8.75], [118.75, -8.65], [118.5, -8.75], [118.25, -8.65], [118.0, -8.75], [117.47, -8.53], [117.25, -8.0], [117.47, -7.47], [117.88, -7.3], [117.75, -7.0], [117.97, -6.47]]]]}, "2011-03-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[126.53, -7.97], [126.75, -8.5], [126.53, -9.03], [126.0, -9.25], [125.47, -9.03], [125.25, -8.5], [125.47, -7.97], [126.0, -7.75], [126.53, -7.97]]], [[[118.5, -6.25], [118.75, -6.35], [119.0, -6.25], [119.25, -6.35], [119.5, -6.25], [119.75, -6.35], [120.0, -6.25], [120.53, -6.47], [120.68, -6.82], [120.75, -6.85], [121.0, -6.75], [121.3, -6.87], [121.47, -6.47], [122.0, -6.25], [122.25, -6.35], [122.5, -6.25], [122.75, -6.35], [123.0, -6.25], [123.53, -6.47], [123.68, -6.82], [123.75, -6.85], [124.0, -6.75], [124.53, -6.97], [124.68, -7.32], [125.03, -7.47], [125.25, -8.0], [125.15, -8.25], [125.25, -8.5], [125.15, -8.75], [125.25, -9.0], [125.03, -9.53], [124.5, -9.75], [124.25, -9.65], [124.0, -9.75], [123.47, -9.53], [123.32, -9.18], [123.25, -9.15], [123.0, -9.25], [122.75, -9.15], [122.5, -9.25], [122.25, -9.15], [122.0, -9.25], [121.75, -9.15], [121.5, -9.25], [120.97, -9.03], [120.82, -8.68], [120.75, -8.65], [120.5, -8.75], [120.25, -8.65], [120.0, -8.75], [119.75, -8.65], [119.5, -8.75], [119.25, -8.65], [119.0, -8.75], [118.75, -8.65], [118.5, -8.75], [118.25, -8.65], [118.0, -8.75], [117.47, -8.53], [117.25, -8.0], [117.47, -7.47], [117.88, -7.3], [117.75, -7.0], [117.97, -6.47], [118.5, -6.25]]]]}, "2011-03-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[126.53, -7.97], [126.75, -8.5], [126.53, -9.03], [126.0, -9.25], [125.47, -9.03], [125.25, -8.5], [125.47, -7.97], [126.0, -7.75], [126.53, -7.97]]], [[[118.5, -6.25], [118.75, -6.35], [119.0, -6.25], [119.25, -6.35], [119.5, -6.25], [119.75, -6.35], [120.0, -6.25], [120.53, -6.47], [120.68, -6.82], [120.75, -6.85], [121.0, -6.75], [121.3, -6.87], [121.47, -6.47], [122.0, -6.25], [122.25, -6.35], [122.5, -6.25], [122.75, -6.35], [123.0, -6.25], [123.53, -6.47], [123.68, -6.82], [123.75, -6.85], [124.0, -6.75], [124.53, -6.97], [124.68, -7.32], [125.03, -7.47], [125.25, -8.0], [125.15, -8.25], [125.25, -8.5], [125.15, -8.75], [125.25, -9.0], [125.03, -9.53], [124.5, -9.75], [124.25, -9.65], [124.0, -9.75], [123.47, -9.53], [123.32, -9.18], [123.25, -9.15], [123.0, -9.25], [122.75, -9.15], [122.5, -9.25], [122.25, -9.15], [122.0, -9.25], [121.75, -9.15], [121.5, -9.25], [120.97, -9.03], [120.82, -8.68], [120.75, -8.65], [120.5, -8.75], [120.25, -8.65], [120.0, -8.75], [119.75, -8.65], [119.5, -8.75], [119.25, -8.65], [119.0, -8.75], [118.75, -8.65], [118.5, -8.75], [118.25, -8.65], [118.0, -8.75], [117.47, -8.53], [117.25, -8.0], [117.47, -7.47], [117.88, -7.3], [117.75, -7.0], [117.97, -6.47], [118.5, -6.25]]]]}, "2011-03-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[119.75, -8.0], [119.97, -7.47], [120.5, -7.25], [120.75, -7.35], [121.0, -7.25], [121.25, -7.35], [121.5, -7.25], [121.75, -7.35], [122.0, -7.25], [122.25, -7.35], [122.5, -7.25], [122.75, -7.35], [123.0, -7.25], [123.25, -7.35], [123.5, -7.25], [123.75, -7.35], [124.0, -7.25], [124.25, -7.35], [124.5, -7.25], [125.03, -7.47], [125.25, -8.0], [125.04, -8.5], [125.25, -9.0], [125.03, -9.53], [124.5, -9.75], [124.25, -9.65], [124.0, -9.75], [123.47, -9.53], [123.25, -9.0], [123.38, -8.7], [123.25, -8.65], [123.18, -8.68], [123.03, -9.03], [122.5, -9.25], [122.0, -9.04], [121.5, -9.25], [120.97, -9.03], [120.82, -8.68], [120.75, -8.65], [120.5, -8.75], [119.97, -8.53], [119.75, -8.0]]], [[[125.47, -9.03], [125.25, -8.5], [125.47, -7.97], [126.0, -7.75], [126.53, -7.97], [126.75, -8.5], [126.53, -9.03], [126.0, -9.25], [125.47, -9.03]]]]}, "2011-03-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[119.97, -8.53], [119.75, -8.0], [119.97, -7.47], [120.5, -7.25], [120.75, -7.35], [121.0, -7.25], [121.53, -7.47], [121.75, -8.0], [121.53, -8.53], [121.0, -8.75], [120.75, -8.65], [120.5, -8.75], [119.97, -8.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.3557338576432585}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -0.9280649464846095}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.56903142937375, 25.693743006033742, 25.694424121711506, 25.582120637491244, 25.718042809479925, 25.78076887279508, 25.85327046076293, 25.937616760652645, 26.33270563650251]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.56903142937375, 25.284360431174093, 22.338767505336648, 22.398914026249088, 22.454877695587413, 24.857060507425558, 24.51240796133368, 24.966031002747684, 26.24014201588966]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.73291748573115, -0.8811181464912718, -0.8001809762137375, -1.0270980252956137, -0.8994048688730226, -1.002222018112581, -0.9390562573167719, -0.7779712233662914, -0.8145973606937105]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-0.73291748573115, -1.0153047382719933, -1.1585488137421294, -1.3468695409843008, -1.3557338576432585, -1.296485352300806, -1.2866876834206096, -0.971854476765543, -0.8531825863406652]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.400883729389227, -1.6862153523921792, -1.4911637997269267, -1.9612003360254484, -1.7100498716324692, -1.8380678074213794, -1.6903864107245499, -1.4011672665003958, -1.3902440564338217]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.400883729389227, -2.015626121491127, -1.9865039422681416, -2.5677721398183815, -2.508117296569668, -2.3337716344945476, -2.3109438831294367, -1.7614178143663413, -1.4775999247289724]}}