{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:22:04.065442", "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": "2021-Jan-20_to_2021-Jan-25_118.5_48.5"}, "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": 2021010002347}, "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": "January 20 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 25 2021"}, "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": "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": 193052.81865383542}, "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", "Mongolia", "Russian Federation"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia", "Asia", "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": []}, "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": 48.5}, "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": 118.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "118.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 115.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 122.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 45.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 52.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[115.0, 48.25], [115.25, 48.146], [115.5, 48.25], [115.75, 48.146], [116.0, 48.25], [116.249, 48.146], [116.25, 48.146], [116.323, 48.177], [116.47, 48.53], [116.823, 48.677], [116.97, 49.03], [117.323, 49.177], [117.47, 49.53], [117.823, 49.677], [117.854, 49.75], [117.75, 50.0], [117.854, 50.25], [117.75, 50.5], [117.854, 50.75], [117.75, 51.0], [117.854, 51.25], [117.75, 51.5], [117.97, 52.03], [118.323, 52.177], [118.47, 52.53], [119.0, 52.75], [119.25, 52.646], [119.323, 52.677], [119.47, 53.03], [120.0, 53.25], [120.25, 53.146], [120.5, 53.25], [120.75, 53.146], [121.0, 53.25], [121.53, 53.03], [121.677, 52.677], [121.75, 52.646], [122.0, 52.75], [122.53, 52.53], [122.75, 52.0], [122.53, 51.47], [122.0, 51.25], [121.75, 51.354], [121.677, 51.323], [121.543, 51.0], [121.75, 50.5], [121.53, 49.97], [121.177, 49.823], [121.146, 49.75], [121.177, 49.677], [121.53, 49.53], [121.75, 49.0], [121.646, 48.75], [121.75, 48.5], [121.646, 48.25], [121.75, 48.0], [121.53, 47.47], [121.177, 47.323], [121.03, 46.97], [120.677, 46.823], [120.53, 46.47], [120.177, 46.323], [120.156, 46.274], [120.146, 46.25], [120.25, 46.0], [120.146, 45.75], [120.25, 45.5], [120.03, 44.97], [119.5, 44.75], [118.97, 44.97], [118.823, 45.323], [118.75, 45.354], [118.5, 45.25], [118.25, 45.354], [118.0, 45.25], [117.75, 45.354], [117.5, 45.25], [117.25, 45.354], [117.0, 45.25], [116.47, 45.47], [116.323, 45.823], [115.97, 45.97], [115.802, 46.375], [115.5, 46.25], [114.97, 46.47], [114.823, 46.823], [114.47, 46.97], [114.25, 47.5], [114.47, 48.03], [115.0, 48.25]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Siberia", "E.Asia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-01-20T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[117.75, 47.85355339059328], [117.5, 47.75], [116.96966991411009, 47.96966991411009], [116.75, 48.5], [116.96966991411009, 49.03033008588991], [117.5, 49.25], [117.75, 49.14644660940672], [117.82322330470336, 49.17677669529664], [117.96966991411009, 49.53033008588991], [118.5, 49.75], [118.75, 49.64644660940672], [119.0, 49.75], [119.25, 49.64644660940672], [119.5, 49.75], [120.03033008588991, 49.53033008588991], [120.25, 49.0], [120.03033008588991, 48.46966991411009], [119.67677669529664, 48.32322330470336], [119.53033008588991, 47.96966991411009], [119.0, 47.75], [118.75, 47.85355339059328], [118.5, 47.75], [118.25, 47.85355339059328], [118.0, 47.75], [117.75, 47.85355339059328]]]}, "2021-01-21T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[117.75, 47.85355339059328], [117.5, 47.75], [116.96966991411009, 47.96966991411009], [116.75, 48.5], [116.96966991411009, 49.03033008588991], [117.5, 49.25], [117.75, 49.14644660940672], [117.82322330470336, 49.17677669529664], [117.96966991411009, 49.53033008588991], [118.5, 49.75], [118.75, 49.64644660940672], [119.0, 49.75], [119.25, 49.64644660940672], [119.5, 49.75], [120.03033008588991, 49.53033008588991], [120.25, 49.0], [120.03033008588991, 48.46966991411009], [119.67677669529664, 48.32322330470336], [119.53033008588991, 47.96966991411009], [119.0, 47.75], [118.75, 47.85355339059328], [118.5, 47.75], [118.25, 47.85355339059328], [118.0, 47.75], [117.75, 47.85355339059328]]]}, "2021-01-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[114.46966991411009, 46.96966991411009], [114.25, 47.5], [114.46966991411009, 48.03033008588991], [115.0, 48.25], [115.25, 48.14644660940672], [115.5, 48.25], [115.75, 48.14644660940672], [116.0, 48.25], [116.25, 48.14644660940672], [116.32322330470336, 48.17677669529664], [116.46966991411009, 48.53033008588991], [116.82322330470336, 48.67677669529664], [116.96966991411009, 49.03033008588991], [117.5, 49.25], [117.75, 49.14644660940672], [117.82322330470336, 49.17677669529664], [117.96966991411009, 49.53033008588991], [118.5, 49.75], [118.75, 49.64644660940672], [119.0, 49.75], [119.25, 49.64644660940672], [119.5, 49.75], [119.75, 49.64644660940672], [120.0, 49.75], [120.25, 49.64644660940672], [120.5, 49.75], [120.75, 49.64644660940672], [121.0, 49.75], [121.53033008588991, 49.53033008588991], [121.75, 49.0], [121.64644660940672, 48.75], [121.75, 48.5], [121.64644660940672, 48.25], [121.75, 48.0], [121.53033008588991, 47.46966991411009], [121.17677669529664, 47.32322330470336], [121.03033008588991, 46.96966991411009], [120.5, 46.75], [120.25, 46.85355339059328], [120.17677669529664, 46.82322330470336], [120.14644660940672, 46.75], [120.25, 46.5], [120.03033008588991, 45.96966991411009], [119.5, 45.75], [118.96966991411009, 45.96966991411009], [118.82322330470336, 46.32322330470336], [118.75, 46.35355339059328], [118.5, 46.25], [118.25, 46.35355339059328], [118.17677669529664, 46.32322330470336], [118.03033008588991, 45.96966991411009], [117.67677669529664, 45.82322330470336], [117.53033008588991, 45.46966991411009], [117.0, 45.25], [116.46966991411009, 45.46966991411009], [116.25, 46.0], [116.35355339059328, 46.25], [116.32322330470336, 46.32322330470336], [116.0, 46.457106781186546], [115.5, 46.25], [114.96966991411009, 46.46966991411009], [114.82322330470336, 46.82322330470336], [114.46966991411009, 46.96966991411009]]], [[[120.53033008588991, 50.46966991411009], [120.0, 50.25], [119.46966991411009, 50.46966991411009], [119.25, 51.0], [119.46966991411009, 51.53033008588991], [120.0, 51.75], [120.53033008588991, 51.53033008588991], [120.75, 51.0], [120.53033008588991, 50.46966991411009]]]]}, "2021-01-23T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[114.82322330470336, 46.82322330470336], [114.46966991411009, 46.96966991411009], [114.25, 47.5], [114.46966991411009, 48.03033008588991], [115.0, 48.25], [115.25, 48.14644660940672], [115.5, 48.25], [115.75, 48.14644660940672], [116.0, 48.25], [116.25, 48.14644660940672], [116.32322330470336, 48.17677669529664], [116.46966991411009, 48.53033008588991], [116.82322330470336, 48.67677669529664], [116.96966991411009, 49.03033008588991], [117.32322330470336, 49.17677669529664], [117.46966991411009, 49.53033008588991], [117.82322330470336, 49.67677669529664], [117.85355339059328, 49.75], [117.75, 50.0], [117.85355339059328, 50.25], [117.75, 50.5], [117.85355339059328, 50.75], [117.75, 51.0], [117.85355339059328, 51.25], [117.75, 51.5], [117.96966991411009, 52.03033008588991], [118.32322330470336, 52.17677669529664], [118.46966991411009, 52.53033008588991], [119.0, 52.75], [119.25, 52.64644660940672], [119.32322330470336, 52.67677669529664], [119.46966991411009, 53.03033008588991], [120.0, 53.25], [120.25, 53.14644660940672], [120.5, 53.25], [120.75, 53.14644660940672], [121.0, 53.25], [121.53033008588991, 53.03033008588991], [121.67677669529664, 52.67677669529664], [121.75, 52.64644660940672], [122.0, 52.75], [122.53033008588991, 52.53033008588991], [122.75, 52.0], [122.53033008588991, 51.46966991411009], [122.0, 51.25], [121.75, 51.35355339059328], [121.67677669529664, 51.32322330470336], [121.54289321881346, 51.0], [121.75, 50.5], [121.53033008588991, 49.96966991411009], [121.17677669529664, 49.82322330470336], [121.14644660940672, 49.75], [121.17677669529664, 49.67677669529664], [121.53033008588991, 49.53033008588991], [121.75, 49.0], [121.64644660940672, 48.75], [121.75, 48.5], [121.64644660940672, 48.25], [121.75, 48.0], [121.53033008588991, 47.46966991411009], [121.17677669529664, 47.32322330470336], [121.03033008588991, 46.96966991411009], [120.67677669529664, 46.82322330470336], [120.53033008588991, 46.46966991411009], [120.17677669529664, 46.32322330470336], [120.14644660940672, 46.25], [120.25, 46.0], [120.14644660940672, 45.75], [120.25, 45.5], [120.03033008588991, 44.96966991411009], [119.5, 44.75], [118.96966991411009, 44.96966991411009], [118.82322330470336, 45.32322330470336], [118.75, 45.35355339059328], [118.5, 45.25], [118.25, 45.35355339059328], [118.0, 45.25], [117.75, 45.35355339059328], [117.5, 45.25], [117.25, 45.35355339059328], [117.0, 45.25], [116.46966991411009, 45.46966991411009], [116.32322330470336, 45.82322330470336], [115.96966991411009, 45.96966991411009], [115.80177669529664, 46.375], [115.5, 46.25], [114.96966991411009, 46.46966991411009], [114.82322330470336, 46.82322330470336]]]}, "2021-01-24T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[114.82322330470336, 46.82322330470336], [114.46966991411009, 46.96966991411009], [114.25, 47.5], [114.46966991411009, 48.03033008588991], [115.0, 48.25], [115.25, 48.14644660940672], [115.5, 48.25], [115.75, 48.14644660940672], [116.0, 48.25], [116.25, 48.14644660940672], [116.32322330470336, 48.17677669529664], [116.46966991411009, 48.53033008588991], [116.82322330470336, 48.67677669529664], [116.96966991411009, 49.03033008588991], [117.32322330470336, 49.17677669529664], [117.46966991411009, 49.53033008588991], [117.82322330470336, 49.67677669529664], [117.85355339059328, 49.75], [117.75, 50.0], [117.85355339059328, 50.25], [117.75, 50.5], [117.85355339059328, 50.75], [117.75, 51.0], [117.85355339059328, 51.25], [117.75, 51.5], [117.96966991411009, 52.03033008588991], [118.32322330470336, 52.17677669529664], [118.46966991411009, 52.53033008588991], [119.0, 52.75], [119.25, 52.64644660940672], [119.32322330470336, 52.67677669529664], [119.46966991411009, 53.03033008588991], [120.0, 53.25], [120.25, 53.14644660940672], [120.5, 53.25], [120.75, 53.14644660940672], [121.0, 53.25], [121.53033008588991, 53.03033008588991], [121.67677669529664, 52.67677669529664], [121.75, 52.64644660940672], [122.0, 52.75], [122.53033008588991, 52.53033008588991], [122.75, 52.0], [122.53033008588991, 51.46966991411009], [122.0, 51.25], [121.75, 51.35355339059328], [121.67677669529664, 51.32322330470336], [121.54289321881346, 51.0], [121.75, 50.5], [121.53033008588991, 49.96966991411009], [121.17677669529664, 49.82322330470336], [121.14644660940672, 49.75], [121.17677669529664, 49.67677669529664], [121.53033008588991, 49.53033008588991], [121.75, 49.0], [121.64644660940672, 48.75], [121.75, 48.5], [121.64644660940672, 48.25], [121.75, 48.0], [121.53033008588991, 47.46966991411009], [121.17677669529664, 47.32322330470336], [121.03033008588991, 46.96966991411009], [120.67677669529664, 46.82322330470336], [120.53033008588991, 46.46966991411009], [120.17677669529664, 46.32322330470336], [120.14644660940672, 46.25], [120.25, 46.0], [120.14644660940672, 45.75], [120.25, 45.5], [120.03033008588991, 44.96966991411009], [119.5, 44.75], [118.96966991411009, 44.96966991411009], [118.82322330470336, 45.32322330470336], [118.75, 45.35355339059328], [118.5, 45.25], [118.25, 45.35355339059328], [118.0, 45.25], [117.75, 45.35355339059328], [117.5, 45.25], [117.25, 45.35355339059328], [117.0, 45.25], [116.46966991411009, 45.46966991411009], [116.32322330470336, 45.82322330470336], [115.96966991411009, 45.96966991411009], [115.80177669529664, 46.375], [115.5, 46.25], [114.96966991411009, 46.46966991411009], [114.82322330470336, 46.82322330470336]]]}, "2021-01-25T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[115.85355339059328, 46.75], [115.75, 47.0], [115.85355339059328, 47.25], [115.75, 47.5], [115.96966991411009, 48.03033008588991], [116.32322330470336, 48.17677669529664], [116.46966991411009, 48.53033008588991], [116.82322330470336, 48.67677669529664], [116.96966991411009, 49.03033008588991], [117.32322330470336, 49.17677669529664], [117.46966991411009, 49.53033008588991], [117.82322330470336, 49.67677669529664], [117.85355339059328, 49.75], [117.75, 50.0], [117.85355339059328, 50.25], [117.75, 50.5], [117.85355339059328, 50.75], [117.75, 51.0], [117.85355339059328, 51.25], [117.75, 51.5], [117.96966991411009, 52.03033008588991], [118.32322330470336, 52.17677669529664], [118.46966991411009, 52.53033008588991], [119.0, 52.75], [119.25, 52.64644660940672], [119.32322330470336, 52.67677669529664], [119.46966991411009, 53.03033008588991], [120.0, 53.25], [120.25, 53.14644660940672], [120.5, 53.25], [120.75, 53.14644660940672], [121.0, 53.25], [121.53033008588991, 53.03033008588991], [121.67677669529664, 52.67677669529664], [121.75, 52.64644660940672], [122.0, 52.75], [122.53033008588991, 52.53033008588991], [122.75, 52.0], [122.53033008588991, 51.46966991411009], [122.0, 51.25], [121.75, 51.35355339059328], [121.67677669529664, 51.32322330470336], [121.54289321881346, 51.0], [121.75, 50.5], [121.53033008588991, 49.96966991411009], [121.17677669529664, 49.82322330470336], [121.14644660940672, 49.75], [121.25, 49.5], [121.14644660940672, 49.25], [121.25, 49.0], [121.14644660940672, 48.75], [121.25, 48.5], [121.14644660940672, 48.25], [121.25, 48.0], [121.14644660940672, 47.75], [121.25, 47.5], [121.03033008588991, 46.96966991411009], [120.67677669529664, 46.82322330470336], [120.53033008588991, 46.46966991411009], [120.17677669529664, 46.32322330470336], [120.14644660940672, 46.25], [120.25, 46.0], [120.14644660940672, 45.75], [120.25, 45.5], [120.03033008588991, 44.96966991411009], [119.5, 44.75], [118.96966991411009, 44.96966991411009], [118.82322330470336, 45.32322330470336], [118.75, 45.35355339059328], [118.5, 45.25], [118.25, 45.35355339059328], [118.0, 45.25], [117.75, 45.35355339059328], [117.5, 45.25], [117.25, 45.35355339059328], [117.0, 45.25], [116.46966991411009, 45.46966991411009], [116.32322330470336, 45.82322330470336], [115.96966991411009, 45.96966991411009], [115.75, 46.5], [115.85355339059328, 46.75]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 12.147575975908921}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 8.147213709267557}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-15.78229243192061, -16.891914813042433, -15.260115855886568, -15.325084862882761, -13.650837493546135, -15.178794838585702]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-14.903922109752443, -15.97006363549059, -12.960757666774327, -10.681833684791457, -9.438277286792754, -11.924495091195638]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [8.05730364710644, 6.76360684921292, 6.845459369109982, 7.893502711913905, 9.427054281764189, 7.866719585909507]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [8.369582995419933, 6.996508471652845, 8.023711816292177, 11.00479657099197, 12.147575975908921, 10.328099366842963]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5980947522108315, 1.3167305216828367, 1.3194797467876969, 1.5981377790563545, 1.9717162901185301, 1.6563623792099482]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.6336497437926771, 1.3535610907013766, 1.5381206473799447, 2.060414315864386, 2.8387143344215438, 2.1839659311990514]}}