28953650.pdf

|  1. DATE - TIME GROUP | 2. LOCATION  |
| --- | --- |
|  26 Feb 53 | Greenland  |
|  3. SOURCE military | 10. CONCLUSION ORDER: WEATHER PHENOMENA  |
|  4. NUMBER OF OBJECTS one | Comments: Upon the interrogatin of the GCA operators, several discrepancies were found. It is believed that the radar target was caused by meteorological conditions or weather effects on radar.  |
|  5. LENGTH OF OBSERVATION 3 mins | 11. BRIEF SUMMARY AND ANALYSIS  |
|  6. TYPE OF OBSERVATION ground radar | Prominent blip emerged from normal clutter area of scope 4 miles SW from the station. Tracked for a distance of…

AF FORM 112
APPROVED 1 JUNE 1948

|  COUNTRY | USA-MATS  |
| --- | --- |
|  REPORT NO. | IR-255-53  |
|  LEAVES DIVISION | 21542654  |

# AIR INTELLIGENCE INFORMATION REPORT

## SUBJECT
(Restricted) Unidentified Radar Sightings In Greenland

## AREA REPORTED ON
Greenland

## DATE OF REPORT
27 March 1953

## DATE OF INFORMATION
26 February 1953

## TIME (Agency)
Air Intelligence Division
No Air Rescue Service
Washington D.C.

## COMMANY: (Under written summary of report. Give significance in final one-sentence paragraph. List inclosures at lower left. Begin text of report on AF Form 112—Part II…

AIR INTELLIGENCE INFORMATION REPORT

FROM (Agency) Air Intelligence Division
REPORT NO.
Hq Air Rescue Service
Washington 25, D. C.
IR-255-53
PAGE 5 OF 4 PAGES

8. On the upper air observations it was noted that a temperature inversion existed at an altitude of 3500 feet and possible also at the 7000 feet level. The following upper air temperatures indicate the intensity of the inversion:

a. Ground temperature - -37 degrees C (Centigrade)
b. At 1000 feet - -33 degrees C
c. At 3500 feet - -38 degrees C
d. At 4000 feet - -41 degrees C
e. At 5000 feet - -40 degrees C
f. Above 5000 feet - Constant…

UNCLASSIFIED
AF FORM 112—PART II
APPROVED 1 JUNE 1948
AIR INTELLIGENCE INFORMATION REPORT

|  FROM (Agency) Air Intelligence Division | REPORT NO. | PAGE 2 OF 4 PAGES  |
| --- | --- | --- |
|  Hq Air Rescue Service Washington 25, D. C. | IR-255-53 |   |

1. At 0550Z, 26 February 1953, an unidentified radar sighting on the GCA Planned Position Indicator (PPI) Scope was reported to this office and the Group Intelligence Officer. As soon as the observing personnel could be contacted, the interrogations were made. The information obtained is related below.

2. During the above time, S/Sgt George S…

UNCLASSIFIED
AF FORM 112—PART II
APPROVED: JUNE 1948
AIR INTELLIGENCE INFORMATION REPORT

|  FROM (Agency) Air Int | Hq Air Rescue Service | Washington 25, D. C.  |
| --- | --- | --- |
|  REPORT NO. | IR-255-53 | PAGE 4 OF 4 PAGES  |

and others could give unusual indications on radar scopes in rather strange patterns.

14. The above weather conditions coupled with the facts that AC&W had no indication of the sighting, discrepancies noted in the interrogations of OCA personnel, the fact that the C-124 crew did not notice any indication of the phenomena, leaves this office to believe that t…