Queries and document

gistfile1.txt

Query with function score set to 'none' - returns the hit but scoring is reverse of what's desired:

{
  "size" : 100,
  "query" : {
    "function_score" : {
      "filter" : {
        "bool" : {
          "must" : [ {
            "geo_bbox" : {
              "location" : {
                "top_left" : [ -119.2, 34.3 ],
                "bottom_right" : [ -119.0, 34.1 ]
              }
            }
          }, {
            "exists" : {
              "field" : "visibilityDistanceSm"
            }
          } ]
        }
      },
      "functions" : [ {
        "field_value_factor" : {
          "field" : "visibilityDistanceSm",
          "modifier" : "none"
        }
      } ]
    }
  }
}

Query with 'reciprocal', 'log', 'ln' and most other functions - does not return the document.
{
  "size" : 100,
  "query" : {
    "function_score" : {
      "filter" : {
        "bool" : {
          "must" : [ {
            "geo_bbox" : {
              "location" : {
                "top_left" : [ -119.2, 34.3 ],
                "bottom_right" : [ -119.0, 34.1 ]
              }
            }
          }, {
            "exists" : {
              "field" : "visibilityDistanceSm"
            }
          } ]
        }
      },
      "functions" : [ {
        "field_value_factor" : {
          "field" : "visibilityDistanceSm",
          "modifier" : "reciprocal"
        }
      } ]
    }
  }
}


The document in question, note the value we are looking at is less than one (0.5):
{
"id": "KNTD",
"text": "KNTD 251616Z 07006KT 1 1/2SM BR BKN003 22/20 A2990 RMK AO2 T02220200 $",
"temperatureC": 22,
"tempDewpointSpread": 2,
"pressureHg": 29.9,
"densityAltitudeFt": 1172,
"relativeHumidity": 88,
"visibilityUnrestricted": null,
"visibilityDistanceSm": 0.5,
"visibilityDistanceQualifier": null,
"windSpeedKts": 6,
"gustSpeedKts": null,
"windFrom": 70,
"windTo": null,
"windIsVariable": false,
"periodStart": null,
"periodEnd": null,
"flightRules": "LIFR",
"cloudLayers": [
{
"coverage": "bkn",
"type": null,
"altitudeFt": 300,
"ceiling": true,
"altitudeQualifier": null
}
],
"ceilingAltitudeFt": 300,
"ceilingCoverage": "BKN",
"totalRunwayLength": 16604,
"longestRunway": 11102,
"location": {
"lat": 34.119274471739864,
"lon": -119.11958509529566
},
"issuedDate": "2015-09-25T16:16:00.000Z",
"type": "WeatherConditionsMarker"
}