Search results
Results from the WOW.Com Content Network
Pre-1998 results published by UAH showed no warming of the atmosphere. In a 1998 paper, Wentz and Schabel showed this (along with other discrepancies) was due to the orbital decay of the NOAA satellites. [12] With these errors corrected, the UAH data showed a 0.07 °C/decade increase in lower troposphere temperature.
Christy et al. (2007) claimed that tropical temperature trends from radiosondes matches closest with his v5.2 UAH dataset. [36] Furthermore, they asserted there was a discrepancy between RSS and sonde trends beginning in 1992, when the NOAA-12 satellite was launched.
As a result, different groups that have analyzed the satellite data have produced differing temperature datasets. The satellite time series is not homogeneous. It is constructed from a series of satellites with similar but not identical sensors. The sensors also deteriorate over time, and corrections are necessary for orbital drift and decay.
From November 1978 through March 2011, Earth's atmosphere has warmed at an average rate of about 0.14 C per decade, according to the UAH satellite record. Christy was a lead author of a section of the 2001 report by the IPCC [7] and the U.S. CCSP report Temperature Trends in the Lower Atmosphere – Understanding and Reconciling Differences. [5]
Roy Warren Spencer (born December 20, 1955) [1] is an American meteorologist and climate scientist. [2] He is a principal research scientist at the University of Alabama in Huntsville, and the U.S. Science Team leader for the Advanced Microwave Scanning Radiometer (AMSR-E) on NASA's Aqua satellite.
Doubts had been raised as early as 2000 about the UAH analysis by the work of Prabhakara et al., [1] which minimised errors due to satellite drift. They found a trend of 0.13 °C/decade, in reasonable agreement with surface trends.
A 2014 study introduced a more sophisticated method of Kriging from the UAH satellite dataset, and found that this considerably reduced the hiatus. [59] Global (land and ocean) surface temperature anomaly time series with new analysis (solid black) versus no corrections for time-dependent biases (blue).
The United States Satellite Analysis Branch, part of National Oceanic and Atmospheric Administration (NOAA)'s National Environmental Satellite, Data, and Information Service's Satellite Services Division, is the operational focal point for real-time imagery products within NESDIS. It is also responsible for doing Dvorak technique intensity fixes on tropical cyclones. Its roots lie in the ...