Cordova


Index

Map of Cordova area
Cordova station history
Cordova temperature history


Map of Cordova


Cordova area, USGS Cordova map sheet, 1959 with limited revisions in 1982. Squares are townships, 6 miles on a side; elevations in feet.

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Cordova Station History

Located on the east shore of Orca Inlet, a shallow fjord opening directly off the Gulf of Alaska, with mountains reaching 2000 to 3000 feet elevation nearby. Current coordinates 60 degrees 30' N, 145 degrees 30' W, elevation 41 feet. Current listed longitude suggests actual site is "Merle K (Mudhole) Smith Airport" (Cordova Airport) on the Copper River Delta, a flat area with direct exposure to the Gulf of Alaska to the south

Established 5/7/1909 at 60 degrees 32' N,145 degrees 42' W, elevation 30 feet, no record of instrumentation. Standard insturments with temperature measured at 5 feet as of 1/19/1917. Station move (and name change to Cordova Mile 7) 4.3 miles ESE and 10 feet lower 6/7/29; new coordinates 60 degrees 31' N and 145 degrees 36' W, elevation 20 feet. Temperature measured at 6 feet. Cordova reopened at original latitude and longitude but elevation of 67 feet after move of 4.3 miles WNW 6/16/33. Temperature shown at 34 feet, so probably on roof. Move to site 18 feet higher but no horizontal move 9/27/38; instrument height lowered to 13 feet. Station move to current coordinates but 40 feet elevation, move of 9.7 miles ESE, temperature 6 feet above ground, 6/11/42. Became USWB/USWS station 9/1/45. Move 0.1 mile N and 1 foot uphill 8/9/63. Observer change to FAA 11/15/64, hygrothermometer HO6 type installed at that time. Hygrothermometer changed to HO8 series 8/14/89, instruments moved at that time but no information on how far.

Obsevation time initially 5 pm. Change to 8 pm March 1 1923, and 4 pm March 7 1929. Change to 3 pm June 16 1933, and to midnight June 11 1942. Observation time remained at midnight through present, aside from effect of time zone change which makes observations 11 pm in 150 WMT (original time zone) since Nov 1 1983.

Record length good, station continuity fair since 1942 but poor earlier in record, data completeness good since early 40's. Examination of the precipitation record suggests that the 1942 move led to a discontinuity in preciptitation.


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Cordova Temperature History



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Geophysical InstituteInt'l Arctic Research Center