science
Photos and graphics relating to science and research.
Increase in number of hurricanes reaching CAT 4-5 by ocean basin
Changes in the numbers of tropical cyclones reaching category 4 or 5 for the 15-year periods of 1975-1989 and 1990-2004 for different ocean basins (adapted from Webster et al., 2005).
Increase in percent of hurricanes reaching CAT 4-5 by ocean basin
Changes in the percents of tropical cyclones reaching category 4 or 5 for the 15-year periods of 1975-1989 and 1990-2004 for different ocean basins (adapted from Webster et al., 2005).
North Pacific and North Atlantic PDIs compared to tropical SSTs
Annual PDI for the North Pacific and North Atlantic basins compared to annually averaged tropical SSTs (source: Emanual, 2005).
Cartoon graph of 20th century temperatures and the break-down of that curve into a natural cycle and a trend
Cartoon graph of 20th century temperatures (heavily smoothed; green), and the break-down of that curve into a cycle with an approximate period of 70 years (representing the AMO; purple) and a long-term trend (representing global warming; orange). This illustrates the possibility that both the AMO and global warming contributed to the observed temperatures of the 20th century, and presumably to hurricane intensity cycles.
Model Simulation of Trend in Hurricanes (from Knutson and Tuleya, 2004)
Hurricane intensity (mb) frequencies from 1296 modeling experiments. Open circles represent the control run, while filled circles represent the high CO2 experiments (source Knutson and Tuleya, 2004).
Servicing a weather station on the Greenland Ice Sheet
Jason Box servicing one of the PARCA automatic weather stations on the Greenland Ice Sheet.
A 3-D look at the recent retreat on the Quelccaya Ice Cap, Peru
Changes in ice extent on the tropical Quelccaya Ice Cap, Peru, from 1975 to 1998. This data set is presently unpublished, so please contact Todd before using this image.
Check out this 3-d view. It's a 2.4MB file, so be patient while it loads. You can view from any side.
