{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:18:30.856948", "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": "2018-Nov-19_to_2018-Dec-01_123.0_-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": 2018110000648}, "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": "November 19 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 01 2018"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 13}, "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": 82186.46672084005}, "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": ["N.Australia", "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": ["Flores Sea", "Savu Sea", "Timor 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": 123.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "123.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 120.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 126.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -11.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -8.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-11-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[124.47, -11.53], [124.25, -11.0], [124.47, -10.47], [125.0, -10.25], [125.5, -10.46], [126.0, -10.25], [126.53, -10.47], [126.75, -11.0], [126.53, -11.53], [126.0, -11.75], [125.5, -11.54], [125.0, -11.75], [124.47, -11.53]]]]}, "2018-11-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[123.75, -11.0], [123.97, -10.47], [124.5, -10.25], [124.75, -10.35], [125.0, -10.25], [125.25, -10.35], [125.5, -10.25], [125.75, -10.35], [126.0, -10.25], [126.53, -10.47], [126.75, -11.0], [126.53, -11.53], [126.18, -11.68], [126.03, -12.03], [125.5, -12.25], [125.25, -12.15], [125.0, -12.25], [124.47, -12.03], [124.32, -11.68], [123.97, -11.53], [123.75, -11.0]]]]}, "2018-11-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[123.75, -11.0], [123.97, -10.47], [124.32, -10.32], [124.47, -9.97], [125.0, -9.75], [125.25, -9.85], [125.5, -9.75], [126.03, -9.97], [126.18, -10.32], [126.53, -10.47], [126.75, -11.0], [126.53, -11.53], [126.18, -11.68], [126.03, -12.03], [125.5, -12.25], [125.25, -12.15], [125.0, -12.25], [124.47, -12.03], [124.32, -11.68], [123.97, -11.53], [123.75, -11.0]]]]}, "2018-11-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[123.25, -10.5], [123.47, -9.97], [124.0, -9.75], [124.25, -9.85], [124.5, -9.75], [124.75, -9.85], [125.0, -9.75], [125.25, -9.85], [125.5, -9.75], [126.03, -9.97], [126.18, -10.32], [126.53, -10.47], [126.75, -11.0], [126.53, -11.53], [126.18, -11.68], [126.03, -12.03], [125.5, -12.25], [125.25, -12.15], [125.0, -12.25], [124.47, -12.03], [124.32, -11.68], [123.97, -11.53], [123.82, -11.18], [123.47, -11.03], [123.25, -10.5]]]]}, "2018-11-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[122.75, -10.5], [122.97, -9.97], [123.5, -9.75], [123.75, -9.85], [124.0, -9.75], [124.25, -9.85], [124.5, -9.75], [124.75, -9.85], [125.0, -9.75], [125.25, -9.85], [125.5, -9.75], [126.03, -9.97], [126.25, -10.5], [126.03, -11.03], [125.5, -11.25], [125.25, -11.15], [125.0, -11.25], [124.75, -11.15], [124.5, -11.25], [124.25, -11.15], [124.0, -11.25], [123.75, -11.15], [123.5, -11.25], [122.97, -11.03], [122.75, -10.5]]], [[[122.47, -9.53], [122.25, -9.0], [122.47, -8.47], [123.0, -8.25], [123.53, -8.47], [123.75, -9.0], [123.53, -9.53], [123.0, -9.75], [122.47, -9.53]]]]}, "2018-11-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[122.75, -10.5], [122.97, -9.97], [123.5, -9.75], [123.75, -9.85], [124.0, -9.75], [124.25, -9.85], [124.5, -9.75], [124.75, -9.85], [125.0, -9.75], [125.53, -9.97], [125.75, -10.5], [125.53, -11.03], [125.0, -11.25], [124.75, -11.15], [124.5, -11.25], [124.25, -11.15], [124.0, -11.25], [123.75, -11.15], [123.5, -11.25], [122.97, -11.03], [122.75, -10.5]]], [[[122.25, -9.0], [122.47, -8.47], [123.0, -8.25], [123.53, -8.47], [123.75, -9.0], [123.53, -9.53], [123.0, -9.75], [122.47, -9.53], [122.25, -9.0]]], [[[120.47, -7.97], [121.0, -7.75], [121.25, -7.85], [121.5, -7.75], [122.03, -7.97], [122.25, -8.5], [122.03, -9.03], [121.5, -9.25], [121.25, -9.15], [121.0, -9.25], [120.47, -9.03], [120.25, -8.5], [120.47, -7.97]]]]}, "2018-11-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[120.47, -9.03], [120.25, -8.5], [120.47, -7.97], [121.0, -7.75], [121.25, -7.85], [121.5, -7.75], [122.03, -7.97], [122.18, -8.32], [122.5, -8.46], [123.0, -8.25], [123.53, -8.47], [123.75, -9.0], [123.65, -9.25], [123.68, -9.32], [124.03, -9.47], [124.18, -9.82], [124.53, -9.97], [124.75, -10.5], [124.53, -11.03], [124.0, -11.25], [123.75, -11.15], [123.5, -11.25], [122.97, -11.03], [122.82, -10.68], [122.75, -10.65], [122.5, -10.75], [121.97, -10.53], [121.82, -10.18], [121.47, -10.03], [121.25, -9.5], [121.35, -9.25], [121.32, -9.18], [121.25, -9.15], [121.0, -9.25], [120.47, -9.03]]]]}, "2018-11-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[120.47, -9.03], [120.25, -8.5], [120.47, -7.97], [121.0, -7.75], [121.25, -7.85], [121.5, -7.75], [122.03, -7.97], [122.18, -8.32], [122.5, -8.46], [123.0, -8.25], [123.53, -8.47], [123.75, -9.0], [123.65, -9.25], [123.68, -9.32], [123.75, -9.35], [124.0, -9.25], [124.53, -9.47], [124.75, -10.0], [124.65, -10.25], [124.75, -10.5], [124.53, -11.03], [124.0, -11.25], [123.75, -11.15], [123.5, -11.25], [122.97, -11.03], [122.82, -10.68], [122.75, -10.65], [122.5, -10.75], [122.25, -10.65], [122.0, -10.75], [121.47, -10.53], [121.25, -10.0], [121.35, -9.75], [121.25, -9.5], [121.35, -9.25], [121.32, -9.18], [121.25, -9.15], [121.0, -9.25], [120.47, -9.03]]]]}, "2018-11-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[120.75, -9.5], [120.97, -8.97], [121.32, -8.82], [121.47, -8.47], [122.0, -8.25], [122.53, -8.47], [122.68, -8.82], [122.75, -8.85], [123.0, -8.75], [123.53, -8.97], [123.68, -9.32], [123.75, -9.35], [124.0, -9.25], [124.53, -9.47], [124.75, -10.0], [124.65, -10.25], [124.75, -10.5], [124.53, -11.03], [124.0, -11.25], [123.75, -11.15], [123.5, -11.25], [122.97, -11.03], [122.82, -10.68], [122.75, -10.65], [122.5, -10.75], [122.25, -10.65], [122.0, -10.75], [121.47, -10.53], [121.32, -10.18], [120.97, -10.03], [120.75, -9.5]]]]}, "2018-11-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[123.75, -9.35], [124.0, -9.25], [124.53, -9.47], [124.75, -10.0], [124.53, -10.53], [124.0, -10.75], [123.75, -10.65], [123.5, -10.75], [122.97, -10.53], [122.75, -10.0], [122.97, -9.47], [123.5, -9.25], [123.75, -9.35]]], [[[120.97, -8.97], [121.5, -8.75], [122.03, -8.97], [122.18, -9.32], [122.53, -9.47], [122.75, -10.0], [122.53, -10.53], [122.0, -10.75], [121.47, -10.53], [121.32, -10.18], [120.97, -10.03], [120.75, -9.5], [120.97, -8.97]]]]}, "2018-11-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[120.97, -8.47], [121.5, -8.25], [121.75, -8.35], [122.0, -8.25], [122.25, -8.35], [122.5, -8.25], [122.75, -8.35], [123.0, -8.25], [123.25, -8.35], [123.5, -8.25], [124.03, -8.47], [124.25, -9.0], [124.03, -9.53], [123.5, -9.75], [123.25, -9.65], [123.18, -9.68], [123.03, -10.03], [122.5, -10.25], [122.25, -10.15], [122.0, -10.25], [121.75, -10.15], [121.5, -10.25], [120.97, -10.03], [120.75, -9.5], [120.85, -9.25], [120.75, -9.0], [120.97, -8.47]]]]}, "2018-11-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[120.97, -8.47], [121.5, -8.25], [121.75, -8.35], [122.0, -8.25], [122.25, -8.35], [122.5, -8.25], [122.75, -8.35], [123.0, -8.25], [123.25, -8.35], [123.5, -8.25], [124.03, -8.47], [124.25, -9.0], [124.03, -9.53], [123.5, -9.75], [123.25, -9.65], [123.18, -9.68], [123.03, -10.03], [122.5, -10.25], [122.25, -10.15], [122.0, -10.25], [121.75, -10.15], [121.5, -10.25], [120.97, -10.03], [120.75, -9.5], [120.85, -9.25], [120.75, -9.0], [120.97, -8.47]]]]}, "2018-12-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[120.97, -8.47], [121.5, -8.25], [121.75, -8.35], [122.0, -8.25], [122.25, -8.35], [122.5, -8.25], [122.75, -8.35], [123.0, -8.25], [123.25, -8.35], [123.5, -8.25], [124.03, -8.47], [124.25, -9.0], [124.03, -9.53], [123.5, -9.75], [123.25, -9.65], [123.18, -9.68], [123.03, -10.03], [122.5, -10.25], [122.25, -10.15], [122.0, -10.25], [121.75, -10.15], [121.5, -10.25], [120.97, -10.03], [120.75, -9.5], [120.85, -9.25], [120.75, -9.0], [120.97, -8.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.4596295124506469}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.0728545645870662}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.803439010701993, 27.625348451344337, 27.521911905477452, 27.537190796246705, 27.42767793798936, 26.705842732339022, 26.83326316788788, 26.680034488212925, 26.78994251966884, 26.6122272427628, 26.872999596750162, 26.435648690963774, 26.6257887621328]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [27.796063894696317, 27.46131194785579, 27.297819331978303, 27.330322055613863, 27.16565464249652, 24.42916027183361, 24.296342917218624, 24.38060198592035, 25.27416581984386, 25.4445766861337, 26.505614393247413, 26.012656418108747, 26.255631804770815]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.9160068223180247, -1.1018609615523758, -1.1395943580936319, -1.050363414918536, -0.9440978346090484, -1.0924360228048775, -0.9385322646911618, -1.0383051298930022, -1.157638170252137, -1.0519774482393984, -0.9329645487618876, -1.3428871198508574, -1.1461851883484542]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-0.9623199529205522, -1.2509810455336492, -1.3774027927157704, -1.2099847728612758, -1.027615972541355, -1.401115893887095, -1.1356176217752818, -1.2810486695166219, -1.4505368240758685, -1.217309477696233, -1.0441815839461697, -1.4596295124506469, -1.361137774758845]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5442492642337715, -1.758505628967549, -1.7544312127893302, -1.6512617462991597, -1.5512379431352754, -1.711725291143019, -1.5428626515606234, -1.664311892736075, -1.7976571294516992, -1.5000948937088934, -1.5035327685283697, -2.1460543548992983, -1.8405955947116082]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5981051348120212, -1.9437772976626935, -2.061430824442911, -1.9028499694025307, -1.69832727031369, -2.1042431360560205, -1.758089651837538, -1.9495374654411863, -2.0996473560375115, -1.662578910837817, -1.6617438938515148, -2.3544608178102306, -2.11950315653284]}}