{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:12:32.997310", "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-Apr-19_to_2018-Apr-22_120.0_29.0"}, "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": 2018040002245}, "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": "April 19 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 22 2018"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 79584.93340219415}, "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": ["China"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["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": ["Eastern 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": 29.0}, "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": 120.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "120.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 118.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 121.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 28.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 32.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-04-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[120.0, 29.75], [120.53, 29.53], [120.75, 29.0], [120.53, 28.47], [120.0, 28.25], [119.47, 28.47], [119.25, 29.0], [119.47, 29.53], [120.0, 29.75]]]]}, "2018-04-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[118.82, 31.68], [118.85, 31.75], [118.75, 32.0], [118.97, 32.53], [119.32, 32.68], [119.47, 33.03], [120.0, 33.25], [120.25, 33.15], [120.5, 33.25], [120.75, 33.15], [121.0, 33.25], [121.25, 33.15], [121.5, 33.25], [122.03, 33.03], [122.25, 32.5], [122.03, 31.97], [121.63, 31.8], [121.68, 31.68], [122.03, 31.53], [122.25, 31.0], [122.03, 30.47], [121.63, 30.3], [121.75, 30.0], [121.53, 29.47], [121.18, 29.32], [121.03, 28.97], [120.68, 28.82], [120.53, 28.47], [120.0, 28.25], [119.75, 28.35], [119.5, 28.25], [118.97, 28.47], [118.75, 29.0], [118.85, 29.25], [118.75, 29.5], [118.85, 29.75], [118.82, 29.82], [118.75, 29.85], [118.5, 29.75], [117.97, 29.97], [117.75, 30.5], [117.97, 31.03], [118.32, 31.18], [118.47, 31.53], [118.82, 31.68]]]]}, "2018-04-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[118.82, 31.68], [118.85, 31.75], [118.75, 32.0], [118.97, 32.53], [119.32, 32.68], [119.47, 33.03], [120.0, 33.25], [120.25, 33.15], [120.5, 33.25], [120.75, 33.15], [121.0, 33.25], [121.25, 33.15], [121.5, 33.25], [122.03, 33.03], [122.25, 32.5], [122.03, 31.97], [121.63, 31.8], [121.68, 31.68], [122.03, 31.53], [122.25, 31.0], [122.03, 30.47], [121.63, 30.3], [121.75, 30.0], [121.53, 29.47], [121.18, 29.32], [121.03, 28.97], [120.68, 28.82], [120.53, 28.47], [120.0, 28.25], [119.75, 28.35], [119.5, 28.25], [118.97, 28.47], [118.75, 29.0], [118.85, 29.25], [118.75, 29.5], [118.85, 29.75], [118.82, 29.82], [118.75, 29.85], [118.5, 29.75], [117.97, 29.97], [117.75, 30.5], [117.97, 31.03], [118.32, 31.18], [118.47, 31.53], [118.82, 31.68]]]]}, "2018-04-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[118.82, 31.68], [118.85, 31.75], [118.75, 32.0], [118.97, 32.53], [119.32, 32.68], [119.47, 33.03], [120.0, 33.25], [120.25, 33.15], [120.5, 33.25], [120.75, 33.15], [121.0, 33.25], [121.25, 33.15], [121.5, 33.25], [122.03, 33.03], [122.25, 32.5], [122.03, 31.97], [121.63, 31.8], [121.68, 31.68], [122.03, 31.53], [122.25, 31.0], [122.03, 30.47], [121.63, 30.3], [121.75, 30.0], [121.53, 29.47], [121.18, 29.32], [121.03, 28.97], [120.68, 28.82], [120.53, 28.47], [120.0, 28.25], [119.75, 28.35], [119.5, 28.25], [118.97, 28.47], [118.75, 29.0], [118.85, 29.25], [118.75, 29.5], [118.85, 29.75], [118.82, 29.82], [118.75, 29.85], [118.5, 29.75], [117.97, 29.97], [117.75, 30.5], [117.97, 31.03], [118.32, 31.18], [118.47, 31.53], [118.82, 31.68]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 7.771790553072151}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 5.596629572045386}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.14280318516512, 22.317613882081787, 22.772598287209973, 23.21965807371913]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.14280318516512, 24.686725735448647, 25.22535830935152, 26.213323846220703]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [4.452421048401618, 5.090600442599563, 5.622543940194131, 6.114884617463925]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [4.452421048401618, 6.243931353070877, 7.009489680922059, 7.771790553072151]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.2928868239346465, 1.53940849405942, 1.7207006895840697, 1.9216550674556145]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.2928868239346465, 1.8094028788662384, 1.93343998702616, 2.497115618961132]}}