May, Blue Marble Next Generation - related pdf preview placeholder

1 MB - PDF

May, Blue Marble Next Generation - related image preview

5400 x 2700
2 MB - JPEG

May, Blue Marble Next Generation - related image preview

5400 x 2700
8 MB - PNG

May, Blue Marble Next Generation - related image preview

21600 x 10800
20 MB - JPEG

May, Blue Marble Next Generation - related image preview

21600 x 10800
113 MB - PNG

May, Blue Marble Next Generation - related image preview

21600 x 21600
21 MB - JPEG

May, Blue Marble Next Generation - related image preview

21600 x 21600
176 MB - PNG

May, Blue Marble Next Generation - related image preview

21600 x 21600
5 MB - JPEG

May, Blue Marble Next Generation - related image preview

21600 x 21600
17 MB - PNG

May, Blue Marble Next Generation - related image preview

21600 x 21600
18 MB - JPEG

May, Blue Marble Next Generation - related image preview

21600 x 21600
185 MB - PNG

May, Blue Marble Next Generation - related image preview

21600 x 21600
16 MB - JPEG

May, Blue Marble Next Generation - related image preview

21600 x 21600
145 MB - PNG

May, Blue Marble Next Generation - related image preview

21600 x 21600
38 MB - JPEG

May, Blue Marble Next Generation - related image preview

21600 x 21600
394 MB - PNG

May, Blue Marble Next Generation - related image preview

21600 x 21600
11 MB - JPEG

May, Blue Marble Next Generation - related image preview

21600 x 21600
93 MB - PNG

May, Blue Marble Next Generation - related image preview

21600 x 21600
26 MB - JPEG

May, Blue Marble Next Generation - related image preview

21600 x 21600
235 MB - PNG

May, Blue Marble Next Generation - related image preview

21600 x 21600
13 MB - JPEG

May, Blue Marble Next Generation - related image preview

21600 x 21600
116 MB - PNG

May, Blue Marble Next Generation

Blue Marble: Next Generation offers greater spatial detail of the surface and spans a longer data collection period than the original. The original Blue Marble was a composite of four months of MODIS observations with a spatial resolution (level of detail) of 1 square kilometer per pixel. Blue Marble: Next Generation offers a years worth of monthly composites at a spatial resolution of 500 meters. These monthly images reveal seasonal changes to the land surface: the green-up and dying-back of vegetation in temperate regions such as North America and Europe, dry and wet seasons in the tropics, and advancing and retreating Northern Hemisphere snow cover. From a computer processing standpoint, the major improvement is the development of a new technique for allowing the computer to automatically recognize and remove cloud-contaminated or otherwise bad data—a process that was previously done manually.

Blue Marble: Next Generation improves the techniques for turning satellite data into digital images. Among the key improvements is greater detail in areas that usually appear very dark to the satellite (because a large amount of sunlight is being absorbed), for example in dense tropical forests. The ability to create a digital image that provides great detail in darker regions without washing out brighter regions, like glaciers, snow-covered areas, and deserts is one of the great challenges of visualizing satellite data. The new version also improves image clarity, and gives highly reflective land surfaces, such as salt flats, a more realistic appearance.

For more information, visit the Blue Marble on the Earth Observatory.


Reto Stöckli, NASA Earth Observatory

Published May 1, 2004
Data acquired May 1 - 31, 2004

Source:
Terra > MODIS
Collection:
Blue Marble