Amazon Observation Tower

The USGS High Dynamic Range All-Sky Imaging System (HDR-ASIS) is installed on top of a 148-foot (45-meter) observation tower to monitor changes in atmospheric conditions and the solar radiation available for photosynthesis.  The tower is located in the Amazon tropical forest near Santarém, Brazil.  Data from the system are being used by USGS Geographer Dennis Dye and his U.S., Brazilian and Australian collaborators to improve understanding of how photosynthesis in tropical forests responds to seasonal variations in climate.  Tapajós National Forest, near Santarém, Pará, Brazil Location: , Santarém, Brazil Photographer: Dennis Dye , USGS
The USGS High Dynamic Range All-Sky Imaging System (HDR-ASIS) is installed on top of a 148-foot (45-meter) observation tower to monitor changes in atmospheric conditions and the solar radiation available for photosynthesis. The tower is located in the Amazon tropical forest near Santarém, Brazil. Data from the system are being used by USGS Geographer Dennis Dye and his U.S., Brazilian and Australian collaborators to improve understanding of how photosynthesis in tropical forests responds to seasonal variations in climate.
Tapajós National Forest, near Santarém, Pará, Brazil
Location: , Santarém, Brazil
Photographer: Dennis Dye , USGS
USGS collaborator Scott Saleska (University of Arizona) makes adjustments to a remote sensing system before installation near the top of a 213-foot (65-meter) tower at the Amazon forest study site near Santarém, Brazil.    Data from the system are being used by Saleska, USGS Geographer Dennis Dye and their U.S., Brazilian and Australian collaborators to improve understanding of how photosynthesis in tropical forests responds to seasonal variations in climate.      Tapajós National Forest, near Santarém, Pará, Brazil Location: , Santarém, Brazil Photographer: Dennis Dye , USGS
USGS collaborator Scott Saleska (University of Arizona) makes adjustments to a remote sensing system before installation near the top of a 213-foot (65-meter) tower at the Amazon forest study site near Santarém, Brazil. Data from the system are being used by Saleska, USGS Geographer Dennis Dye and their U.S., Brazilian and Australian collaborators to improve understanding of how photosynthesis in tropical forests responds to seasonal variations in climate.
Tapajós National Forest, near Santarém, Pará, Brazil
Location: , Santarém, Brazil
Photographer: Dennis Dye , USGS
Sensors installed on this 213-foot (65-meter) tower  near Santarém, Brazil are used by USGS Geographer Dennis Dye and his U.S., Brazilian and Australian collaborators to improve understanding of how seasonal variations in climate affects photosynthesis and the uptake of atmospheric carbon dioxide by tropical forests. Tapajós National Forest, near Santarém, Pará, Brazil Location: , Santarém, Brazil Photographer: Dennis Dye , USGS
Sensors installed on this 213-foot (65-meter) tower near Santarém, Brazil are used by USGS Geographer Dennis Dye and his U.S., Brazilian and Australian collaborators to improve understanding of how seasonal variations in climate affects photosynthesis and the uptake of atmospheric carbon dioxide by tropical forests.
Tapajós National Forest, near Santarém, Pará, Brazil
Location: , Santarém, Brazil
Photographer: Dennis Dye , USGS
Observation tower at the Amazon forest study site near Santarém, Brazil. A USGS instrument installed at the top of the 148-foot (45-meter) tower monitors changes in atmospheric conditions and the solar radiation available for photosynthesis. Data from the system are being used by USGS Geographer Dennis Dye and his U.S., Brazilian and Australian collaborators to improve understanding of how photosynthesis in tropical forests responds to seasonal variations in climate.      Tapajós National Forest, near Santarém, Pará, Brazil Location: , Santarém, Brazil Photographer: Valeriy Ivanov , University of Michigan
Observation tower at the Amazon forest study site near Santarém, Brazil. A USGS instrument installed at the top of the 148-foot (45-meter) tower monitors changes in atmospheric conditions and the solar radiation available for photosynthesis. Data from the system are being used by USGS Geographer Dennis Dye and his U.S., Brazilian and Australian collaborators to improve understanding of how photosynthesis in tropical forests responds to seasonal variations in climate.
Tapajós National Forest, near Santarém, Pará, Brazil
Location: , Santarém, Brazil
Photographer: Valeriy Ivanov , University of Michigan

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