{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:49:00.693436", "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-Nov-24_to_2011-Dec-02_22.5_58.0"}, "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": 2011110002556}, "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 24 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 02 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": "Heat wave"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 51054.923003720716}, "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": ["Estonia", "Finland"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Europe"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Europe"]}, "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": ["Baltic Sea", "Gulf of Finland", "Gulf of Riga"]}, "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": 58.0}, "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": 22.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "22.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 20.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 27.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 57.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 60.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-11-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[21.47, 57.47], [21.25, 58.0], [21.47, 58.53], [22.0, 58.75], [22.25, 58.65], [22.5, 58.75], [22.75, 58.65], [23.0, 58.75], [23.25, 58.65], [23.5, 58.75], [24.03, 58.53], [24.25, 58.0], [24.03, 57.47], [23.5, 57.25], [23.25, 57.35], [23.0, 57.25], [22.75, 57.35], [22.5, 57.25], [22.25, 57.35], [22.0, 57.25], [21.47, 57.47]]]]}, "2011-11-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[21.47, 57.47], [21.25, 58.0], [21.47, 58.53], [22.0, 58.75], [22.25, 58.65], [22.5, 58.75], [22.75, 58.65], [23.0, 58.75], [23.25, 58.65], [23.5, 58.75], [23.75, 58.65], [24.0, 58.75], [24.53, 58.53], [24.75, 58.0], [24.65, 57.75], [24.75, 57.5], [24.53, 56.97], [24.0, 56.75], [23.75, 56.85], [23.5, 56.75], [22.97, 56.97], [22.82, 57.32], [22.75, 57.35], [22.5, 57.25], [22.25, 57.35], [22.0, 57.25], [21.47, 57.47]]]]}, "2011-11-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[21.47, 57.47], [21.25, 58.0], [21.47, 58.53], [22.0, 58.75], [22.25, 58.65], [22.5, 58.75], [22.75, 58.65], [23.0, 58.75], [23.25, 58.65], [23.5, 58.75], [23.75, 58.65], [24.0, 58.75], [24.53, 58.53], [24.75, 58.0], [24.65, 57.75], [24.75, 57.5], [24.53, 56.97], [24.0, 56.75], [23.75, 56.85], [23.5, 56.75], [22.97, 56.97], [22.82, 57.32], [22.75, 57.35], [22.5, 57.25], [22.25, 57.35], [22.0, 57.25], [21.47, 57.47]]]]}, "2011-11-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[21.47, 57.47], [21.25, 58.0], [21.47, 58.53], [22.0, 58.75], [22.25, 58.65], [22.5, 58.75], [22.75, 58.65], [23.0, 58.75], [23.25, 58.65], [23.5, 58.75], [23.75, 58.65], [24.0, 58.75], [24.53, 58.53], [24.75, 58.0], [24.65, 57.75], [24.75, 57.5], [24.53, 56.97], [24.0, 56.75], [23.75, 56.85], [23.5, 56.75], [22.97, 56.97], [22.82, 57.32], [22.75, 57.35], [22.5, 57.25], [22.25, 57.35], [22.0, 57.25], [21.47, 57.47]]]]}, "2011-11-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[22.97, 56.97], [22.75, 57.5], [22.97, 58.03], [23.5, 58.25], [23.75, 58.15], [24.0, 58.25], [24.53, 58.03], [24.75, 57.5], [24.53, 56.97], [24.0, 56.75], [23.75, 56.85], [23.5, 56.75], [22.97, 56.97]]]]}, "2011-11-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[20.47, 59.53], [20.82, 59.68], [20.97, 60.03], [21.5, 60.25], [21.75, 60.15], [22.0, 60.25], [22.25, 60.15], [22.5, 60.25], [22.75, 60.15], [23.0, 60.25], [23.25, 60.15], [23.5, 60.25], [23.75, 60.15], [24.0, 60.25], [24.53, 60.03], [24.75, 59.5], [24.53, 58.97], [24.18, 58.82], [24.15, 58.75], [24.18, 58.68], [24.53, 58.53], [24.75, 58.0], [24.65, 57.75], [24.75, 57.5], [24.53, 56.97], [24.0, 56.75], [23.75, 56.85], [23.5, 56.75], [22.97, 56.97], [22.82, 57.32], [22.75, 57.35], [22.5, 57.25], [22.25, 57.35], [22.18, 57.32], [22.03, 56.97], [21.5, 56.75], [20.97, 56.97], [20.75, 57.5], [20.85, 57.75], [20.82, 57.82], [20.47, 57.97], [20.25, 58.5], [20.35, 58.75], [20.25, 59.0], [20.47, 59.53]]]]}, "2011-11-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[20.47, 59.53], [20.82, 59.68], [20.97, 60.03], [21.5, 60.25], [21.75, 60.15], [22.0, 60.25], [22.25, 60.15], [22.5, 60.25], [22.75, 60.15], [23.0, 60.25], [23.25, 60.15], [23.32, 60.18], [23.47, 60.53], [24.0, 60.75], [24.25, 60.65], [24.5, 60.75], [24.75, 60.65], [25.0, 60.75], [25.25, 60.65], [25.5, 60.75], [25.75, 60.65], [26.0, 60.75], [26.25, 60.65], [26.5, 60.75], [26.75, 60.65], [27.0, 60.75], [27.53, 60.53], [27.75, 60.0], [27.53, 59.47], [27.0, 59.25], [26.75, 59.35], [26.5, 59.25], [26.25, 59.35], [26.0, 59.25], [25.75, 59.35], [25.5, 59.25], [25.25, 59.35], [25.0, 59.25], [24.75, 59.35], [24.68, 59.32], [24.53, 58.97], [24.18, 58.82], [24.15, 58.75], [24.18, 58.68], [24.53, 58.53], [24.75, 58.0], [24.53, 57.47], [24.18, 57.32], [24.03, 56.97], [23.5, 56.75], [22.97, 56.97], [22.82, 57.32], [22.75, 57.35], [22.5, 57.25], [22.25, 57.35], [22.18, 57.32], [22.03, 56.97], [21.5, 56.75], [20.97, 56.97], [20.75, 57.5], [20.85, 57.75], [20.82, 57.82], [20.47, 57.97], [20.25, 58.5], [20.35, 58.75], [20.25, 59.0], [20.47, 59.53]]]]}, "2011-12-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[20.47, 59.53], [20.82, 59.68], [20.97, 60.03], [21.5, 60.25], [21.75, 60.15], [22.0, 60.25], [22.25, 60.15], [22.5, 60.25], [22.75, 60.15], [23.0, 60.25], [23.25, 60.15], [23.32, 60.18], [23.47, 60.53], [24.0, 60.75], [24.25, 60.65], [24.5, 60.75], [24.75, 60.65], [25.0, 60.75], [25.25, 60.65], [25.5, 60.75], [25.75, 60.65], [26.0, 60.75], [26.25, 60.65], [26.5, 60.75], [26.75, 60.65], [27.0, 60.75], [27.53, 60.53], [27.75, 60.0], [27.53, 59.47], [27.0, 59.25], [26.75, 59.35], [26.5, 59.25], [26.25, 59.35], [26.0, 59.25], [25.75, 59.35], [25.5, 59.25], [25.25, 59.35], [25.0, 59.25], [24.75, 59.35], [24.68, 59.32], [24.53, 58.97], [24.18, 58.82], [24.15, 58.75], [24.18, 58.68], [24.53, 58.53], [24.75, 58.0], [24.53, 57.47], [24.0, 57.25], [23.75, 57.35], [23.5, 57.25], [23.25, 57.35], [23.0, 57.25], [22.75, 57.35], [22.5, 57.25], [22.25, 57.35], [22.18, 57.32], [22.03, 56.97], [21.5, 56.75], [20.97, 56.97], [20.75, 57.5], [20.85, 57.75], [20.82, 57.82], [20.47, 57.97], [20.25, 58.5], [20.35, 58.75], [20.25, 59.0], [20.47, 59.53]]]]}, "2011-12-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[21.47, 59.53], [21.82, 59.68], [21.97, 60.03], [22.5, 60.25], [22.75, 60.15], [23.0, 60.25], [23.25, 60.15], [23.32, 60.18], [23.47, 60.53], [24.0, 60.75], [24.25, 60.65], [24.5, 60.75], [24.75, 60.65], [25.0, 60.75], [25.25, 60.65], [25.5, 60.75], [25.75, 60.65], [26.0, 60.75], [26.25, 60.65], [26.5, 60.75], [26.75, 60.65], [27.0, 60.75], [27.53, 60.53], [27.75, 60.0], [27.53, 59.47], [27.0, 59.25], [26.75, 59.35], [26.5, 59.25], [26.25, 59.35], [26.0, 59.25], [25.75, 59.35], [25.5, 59.25], [25.25, 59.35], [25.0, 59.25], [24.75, 59.35], [24.68, 59.32], [24.53, 58.97], [24.18, 58.82], [24.15, 58.75], [24.18, 58.68], [24.53, 58.53], [24.75, 58.0], [24.53, 57.47], [24.0, 57.25], [23.75, 57.35], [23.5, 57.25], [23.25, 57.35], [23.0, 57.25], [22.75, 57.35], [22.5, 57.25], [22.25, 57.35], [22.0, 57.25], [21.75, 57.35], [21.5, 57.25], [20.97, 57.47], [20.75, 58.0], [20.97, 58.53], [21.38, 58.7], [21.25, 59.0], [21.47, 59.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 5.7445458252771004}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 4.134569042700165}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [7.678362127852495, 8.041171254646827, 7.064811370927771, 8.525065787182257, 6.761712597801193, 7.087106533985377, 7.11530957513304, 6.768184708031242, 6.039942237131299]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [8.223717325522102, 8.472090327635385, 7.353279823209789, 8.983951793384733, 6.875311616998317, 7.657786455559403, 7.953170540646454, 7.782842833385132, 7.078612096739732]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [3.6943364457336116, 4.412200736910036, 3.634004209753446, 5.336017662292842, 4.026573022072341, 3.8640374355464018, 4.3309587325036665, 4.1864932904357675, 3.860511729652474]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [4.017397979498526, 4.766266536392095, 4.041509971035509, 5.7445458252771004, 4.257348128915737, 4.592770780180842, 5.0364431803439516, 4.648622477551896, 4.214222760253392]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4451329058951188, 1.6088654058078622, 1.263858584705891, 1.7954981368715812, 1.2467578812865887, 1.3199184982088994, 1.445727447054349, 1.387264962147746, 1.2612508996372132]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.571311830176233, 1.684665521941125, 1.3148226853706033, 1.897717778712754, 1.2552129501183136, 1.437587347204659, 1.5942848801662746, 1.5743729143581617, 1.3447859742603674]}}