{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:13:20.186196", "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": "2020-May-14_to_2020-May-16_64.0_30.5"}, "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": 2020050000382}, "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": "May 14 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 16 2020"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 81709.45489381542}, "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": ["Afghanistan"]}, "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": []}, "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": 30.5}, "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": 64.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "64.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 62.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 65.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 30.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 33.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[61.854, 32.25], [61.75, 32.5], [61.854, 32.75], [61.75, 33.0], [61.97, 33.53], [62.5, 33.75], [63.03, 33.53], [63.177, 33.177], [63.25, 33.146], [63.5, 33.25], [63.75, 33.146], [64.0, 33.25], [64.25, 33.146], [64.5, 33.25], [65.03, 33.03], [65.177, 32.677], [65.53, 32.53], [65.677, 32.177], [66.03, 32.03], [66.25, 31.5], [66.146, 31.25], [66.25, 31.0], [66.03, 30.47], [65.677, 30.323], [65.646, 30.25], [65.75, 30.0], [65.53, 29.47], [65.0, 29.25], [64.75, 29.354], [64.5, 29.25], [63.97, 29.47], [63.823, 29.823], [63.75, 29.854], [63.5, 29.75], [63.25, 29.854], [63.0, 29.75], [62.47, 29.97], [62.25, 30.5], [62.354, 30.75], [62.323, 30.823], [61.97, 30.97], [61.75, 31.5], [61.854, 31.75], [61.75, 32.0], [61.854, 32.25]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.C.Asia", "S.Asia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-05-14T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[61.85355339059328, 31.75], [61.75, 32.0], [61.85355339059328, 32.25], [61.75, 32.5], [61.85355339059328, 32.75], [61.75, 33.0], [61.96966991411009, 33.53033008588991], [62.5, 33.75], [63.03033008588991, 33.53033008588991], [63.17677669529664, 33.17677669529664], [63.25, 33.14644660940672], [63.5, 33.25], [63.75, 33.14644660940672], [64.0, 33.25], [64.25, 33.14644660940672], [64.5, 33.25], [65.03033008588991, 33.03033008588991], [65.17677669529664, 32.67677669529664], [65.53033008588991, 32.53033008588991], [65.67677669529664, 32.17677669529664], [66.03033008588991, 32.03033008588991], [66.25, 31.5], [66.14644660940672, 31.25], [66.25, 31.0], [66.03033008588991, 30.46966991411009], [65.67677669529664, 30.32322330470336], [65.64644660940672, 30.25], [65.75, 30.0], [65.53033008588991, 29.46966991411009], [65.0, 29.25], [64.75, 29.353553390593273], [64.5, 29.25], [63.96966991411009, 29.46966991411009], [63.82322330470336, 29.82322330470336], [63.75, 29.853553390593273], [63.5, 29.75], [63.25, 29.853553390593273], [63.0, 29.75], [62.46966991411009, 29.96966991411009], [62.25, 30.5], [62.35355339059328, 30.75], [62.32322330470336, 30.82322330470336], [61.96966991411009, 30.96966991411009], [61.75, 31.5], [61.85355339059328, 31.75]]]}, "2020-05-15T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[61.85355339059328, 31.75], [61.75, 32.0], [61.85355339059328, 32.25], [61.75, 32.5], [61.85355339059328, 32.75], [61.75, 33.0], [61.96966991411009, 33.53033008588991], [62.5, 33.75], [63.03033008588991, 33.53033008588991], [63.17677669529664, 33.17677669529664], [63.25, 33.14644660940672], [63.5, 33.25], [63.75, 33.14644660940672], [64.0, 33.25], [64.25, 33.14644660940672], [64.5, 33.25], [65.03033008588991, 33.03033008588991], [65.17677669529664, 32.67677669529664], [65.53033008588991, 32.53033008588991], [65.67677669529664, 32.17677669529664], [66.03033008588991, 32.03033008588991], [66.25, 31.5], [66.14644660940672, 31.25], [66.25, 31.0], [66.03033008588991, 30.46966991411009], [65.67677669529664, 30.32322330470336], [65.64644660940672, 30.25], [65.75, 30.0], [65.53033008588991, 29.46966991411009], [65.0, 29.25], [64.75, 29.353553390593273], [64.5, 29.25], [63.96966991411009, 29.46966991411009], [63.82322330470336, 29.82322330470336], [63.75, 29.853553390593273], [63.5, 29.75], [63.25, 29.853553390593273], [63.0, 29.75], [62.46966991411009, 29.96966991411009], [62.25, 30.5], [62.35355339059328, 30.75], [62.32322330470336, 30.82322330470336], [61.96966991411009, 30.96966991411009], [61.75, 31.5], [61.85355339059328, 31.75]]]}, "2020-05-16T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[61.85355339059328, 31.75], [61.75, 32.0], [61.85355339059328, 32.25], [61.75, 32.5], [61.85355339059328, 32.75], [61.75, 33.0], [61.96966991411009, 33.53033008588991], [62.5, 33.75], [63.03033008588991, 33.53033008588991], [63.17677669529664, 33.17677669529664], [63.25, 33.14644660940672], [63.5, 33.25], [63.75, 33.14644660940672], [64.0, 33.25], [64.25, 33.14644660940672], [64.5, 33.25], [65.03033008588991, 33.03033008588991], [65.17677669529664, 32.67677669529664], [65.53033008588991, 32.53033008588991], [65.67677669529664, 32.17677669529664], [66.03033008588991, 32.03033008588991], [66.25, 31.5], [66.14644660940672, 31.25], [66.25, 31.0], [66.03033008588991, 30.46966991411009], [65.67677669529664, 30.32322330470336], [65.64644660940672, 30.25], [65.75, 30.0], [65.53033008588991, 29.46966991411009], [65.0, 29.25], [64.75, 29.353553390593273], [64.5, 29.25], [63.96966991411009, 29.46966991411009], [63.82322330470336, 29.82322330470336], [63.75, 29.853553390593273], [63.5, 29.75], [63.25, 29.853553390593273], [63.0, 29.75], [62.46966991411009, 29.96966991411009], [62.25, 30.5], [62.35355339059328, 30.75], [62.32322330470336, 30.82322330470336], [61.96966991411009, 30.96966991411009], [61.75, 31.5], [61.85355339059328, 31.75]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.264222479830664}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.5731046481951605}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.595523506204984, 24.448620042084713, 24.82035683527897]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [18.934989301917028, 18.316923636754325, 18.209450972333286]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.551494578624367, -4.754402974824214, -4.4134163911368995]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.264222479830664, -5.158342390214386, -4.885836632312362]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5658070496916967, -1.641864004091515, -1.551847498623538]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7785562533724613, -1.8046707709385577, -1.7406345901716709]}}