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Pages 1-7

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From page 1...
... entitled Earth and temporal coverage than obtained during the intensive Science and Applications from Space: National Imperatives field expeditions of the IGY. for the Next Decade and Beyond, also referred to as the The global view obtained routinely by observations from "decadal survey." Recognizing the increasing need for space space is unmatched in its ability to resolve the dynamics observations, the decadal survey identifies future directions and the variability of Earth processes.
From page 2...
... Inexpensive GPS receivers flow toward the sea has increased measurably in response are now taken for granted by consumers who are rapidly to climate change. The collapse of the Larsen B Ice Shelf becoming accustomed to GPS navigation on the road, on in Antarctica in 2002 -- captured only because of frequent the water, or in the air without realizing the enormous body coverage by satellite imagery -- dramatically illustrated the of science behind this technological achievement: accurate dynamics of ice sheets on astonishingly short timescales position information of the satellites, very stable clocks, and (Figure S.2)
From page 3...
... Quantita- satellite observations. The radiometer flown on Explorer 7 tive information from satellites provides data for modeling from 1959 to 1961 made it possible for the first time to efforts to predict coupled atmospheric chemical and climate directly measure the energy entering and leaving Earth.
From page 4...
... By assimilating satellite observations, SST record provided evidence for global warming as 80 per- which yield dramatically improved and continually updated cent of the excess heat is entering the ocean and also helped knowledge of the state of the atmosphere, meteorologists can improve understanding of the important climate-atmosphere devise models that project the weather into the future with feedbacks in the tropics that are also responsible for ENSO much improved accuracy compared to presatellite forecasts. events.
From page 5...
... Recent mitigate famines. satellite observations show a decrease in chlorine-containing Another example of an important societal benefit gained gases and the apparent beginning of an ozone recovery at from satellite observations is the continuous observation of midlatitudes, yielding increased confidence that the Montreal stratospheric ozone.
From page 6...
... As scientists 1. The daily synoptic global view of Earth, uniquely have gained experience in studying Earth through satel available from satellite observations, has revolutionized lite observations, they have defined new technological Earth studies and ushered in a new era of multidiscineeds, helped drive technological development to provide plinary Earth sciences, with an emphasis on ­dynamics at more quantitative and accurate measurements, and have all accessible spatial and temporal scales, even in remote advanced more sophisticated methods to interpret satellite areas.
From page 7...
... However, building a predictive capability relies losing the workforce and infrastructure built over the past strongly on the availability of intercalibrated long-term data decades. Given the many scientific challenges ahead, we records, which can only be maintained if subsequent genera- have seen only the beginning of an era of Earth observations tions of satellite sensors overlap with their predecessors.


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