Benchmark Climates

WE TEST EVERYTHING UNDER THE SUN ®

It is not practical to determine the weathering characteristics of materials in all of the world's climates. Therefore, benchmark climates selected for exposure testing are based on their known severity for the weathering of materials and the anticipated market of the product. The major marketing area of the materials should be taken into consideration when selecting suitable climates and sites for weathering tests.

Sub Tropical

For over 75 years, the Miami region of southern Florida has been a benchmark for outdoor testing of material's durability. High levels of ultraviolet radiation, humidity and temperature combine to provide a subtropical environment widely specified for outdoor exposure testing. Companies worldwide use Atlas' outdoor exposure site for exposure testing of paints, coatings , textiles, plastics and other various products.

Atlas utilizes the latest technology in weather reporting instrumentation, such as total solar (Ultraviolet, Visible and Infrared), total UV and narrow-band UV radiometers and pyrheliometers. Both sites also employ instruments for monitoring ambient temperature and humidity, rainfall, total wet-time and wind speed. All instruments are directly traceable to national and international standards, including the World Radiometric Reference (WRR) and the National Institute of Standards and Technology (NIST).

Florida

Local informations 
Location:
Latitude25° 52' North
Longitude80° 27' West
Elevation3 meters (10 ft)
Distance From Ocean27 km (17 miles)
Temperature: 
Average High34°C / 93°F (Summer), 26°C / 79°F (Winter)
Average Low23°C / 73°F (Summer), 13°C / 55°F (Winter)
Relative Humidity: 
Annual Mean78%
Annual Precipitation (Rain)1685 mm / 66 inches
Solar Radiant Exposure*: 
Total6588 MJ/m2
UV280 MJ/m2

*Radiant Exposure measured at latitude tilt angle (26° South)

Av. Monthly UV and Total Radiant Exposure for Southern Florida (MJ/m2)

MONTHUV*TOTAL
January20.0505
February22.5545
March26.5545
April28.0612
May28.0609
June25.7543
July24.7532
August24.0543
September22.3540
October21.7555
November18.0490
December18.6496
YEARLY TOTAL280.06588
Desert

Along with southern Florida, Arizona has long been considered a benchmark for outdoor exposure testing. Both sites, posses high levels of solar radiation and elevated temperatures, two crucial factors in weathering processes. Unlike southern Florida, however, Arizona has low relative humidity (approximately 30%) that can have a distinct effect on materials durability.

Atlas' Arizona desert site is located at approximately 50km (30mi) north of metropolitan Phoenix in an unpolluted environment. Since 1948, DSET has offered desert exposure testing suitable for materials used in a wide range of industries, including automotive, construction and consumer products.

Arizona

Local informations 
Location:
 
Latitude33° 54' North
Longitude112° 08' West
Elevation610 meters (2000 ft)
Temperature: 
Average High39°C / 102°F (Summer), 24°C / 75°F (Winter)
Average Low20°C / 68°F (Summer), 8°C / 46°F (Winter)
Relative Humidity: 
Annual Mean37%
Annual Precipitation (Rain)255 mm / 10 inches
Solar Radiant Exposure*: 
Total8004 MJ/m2
UV334 MJ/m2

* Radiant Exposure measured at latitude titl angle (34° South)

Av. Monthly UV and Total Radiant Exposure for Central Arizona (MJ/m2)

MONTHUV*TOTAL
January20.1490
February19.8546
March24.7633
April33.3755
May38.6786
June36.8770
July35.1745
August32.5756
September29.3711
October25.8705
November19.2582
December18.3525
YEARLY TOTAL333.58004
Mediterranean

The Bandol region of France possesses a typical Mediterranean climate. With 3,000 hours of sunlight per year, an elevation of 110 m (361 ft), average wet time of 2,700 hours and a proximity to the Mediterranean Sea of only 4 km, the site is used by many Eurpoean companies to test a wide range of materials.

 

 

 

Sanary, France

Local informations 
Location:
 
Latitude43° 08' North
Longitude5° 49' East
Elevation110 meters
Temperature: 
Annual Avg. Temperature13° C (55° F)
Relative Humidity: 
Avg. Relative Humidity76%
Total Rain700 mm
Total UV 295-385 nm382.4 MJ/m2*
Total Radiant Energy 295-3000 nm5500 MJ/m2

*Data measured from 300-400 nm