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The Gateway to Astronaut Photography of Earth
(NASA Crew Earth Observations)
Astronaut Photography of Earth - Display Record
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IdentificationMission: ISS039 Roll: E Frame: 18541 Mission ID on the Film or image: ISS039
Country or Geographic Name: USA-NEW YORK
Features: NEW YORK CITY
Center Point: Latitude: 40.7 Longitude: -74.0 (Negative numbers indicate south for latitude and west for longitude)
Stereo: (Yes indicates there is an adjacent picture of the same area)
ONC Map ID: JNC Map ID:
CameraCamera Tilt: 42
Camera Focal Length: 800mm
Camera: N5: Nikon D3S
Film: 4256E : 4256 x 2832 pixel CMOS sensor, 36.0mm x 23.9mm, total pixels: 12.87 million, Nikon FX format.
Percentage of Cloud Cover: 10 (0-10)
GMT Date: 20140505 (YYYYMMDD) GMT Time: 195319 (HHMMSS)
Nadir Point Latitude: 38.6, Longitude: -71.4 (Negative numbers indicate south for latitude and west for longitude)
Nadir to Photo Center Direction: Northwest
Sun Azimuth: 256 (Clockwise angle in degrees from north to the sun measured at the nadir point)
Spacecraft Altitude: 223 nautical miles (413 km)
Sun Elevation Angle: 43 (Angle in degrees between the horizon and the sun, measured at the nadir point)
CaptionsNew York City
This detailed image reveals the narrow shape of Manhattan located between the Hudson River and the East River, a feature familiar to crews on the International Space Station. The ragged line of shadow cast by the Palisades cliff crosses the bottom of the image. Wharves jut into the rivers, bridges are visible mainly because of the shadows they cast, and the grid pattern of major roads stands out. On the island of Manhattan itself the main visual features are Central Park (with playing fields as white dots) and two darker zones where the tallest buildings in Midtown East and the Financial District cast strong shadows, even in this early afternoon view.
Rivers and parks reduce the effect of the urban heat island – the local zone of higher surface and atmospheric temperatures generated by storage and later release of heat by city materials such as concrete and tarmac. Rivers provide pathways for wind and the cooling effect of parks is detectable by instruments on spacecraft that can measure the temperature of the ground surface. Tall buildings have a more complex effect. Shadowed zones in the “urban canyons” between tall buildings – as shown in this image – receive fewer hours of direct sun per day. But where the sun can reach canyon floors, the sun’s energy is reflected back up at the walls of the buildings where it is absorbed and later released as heat. This is especially the case at night when urban canyons retain more heat than those sections of the city with shorter buildings.
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Recommended Citation: Earth Science and Remote Sensing Unit, NASA-Johnson Space Center. "The Gateway to Astronaut Photography of Earth." .