of the wind direction.
Wind-speed is symbolised by diagonal lines at the end of the barb; a long line represents 5 m/s, a short line 2.5 m/s and a triangle represents 25 m/s.
Temperature forecast:
Temperature levels are shown over the Atlantic Ocean in degrees Celsius (°C) at an altitude of about 1,500 m above the ocean surface. This altitude equates to an air pressure of 850 hPa
/weather/articles/nr/1218
shows the direction of the wind, which blows toward the point of the barb. Wind-speed is symbolized by diagonal lines at the end of the barb; for instance, a short line represents 2.5 m/s, a long line 5 m/s and a triangle represents 25 m/s.
Mean sea level pressure is shown in solid lines, the contour interval is 2 hPa.
The sliding bar below the map is used to change the validity time
/weather/articles/nr/1211
6University of Washington,
Seattle, WA 98195, USA. 7NOAA Geophysical Fluid
Dynamics Laboratory, Princeton, NJ 08540, USA.
*Author for correspondence. E-mail: cmilly@usgs.gov.
An uncertain future challenges water planners.
Published by AAAS
on July 12, 201
1
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1 FEBRUARY 2008 VOL 319 SCIENCE www.sciencemag.org574
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/media/loftslag/Milly_etal-2008-Stationarity-dead-Science.pdf
usually between 1 and +1. Note that
contrary to most applications, non-zero values on the diagonal
are considered here.
The next state of the concepts (the state vector) can be
calculated by a matrix calculation A E = B. This multiplication can
be repeated as often as desired.
2.4. Hypothetical example
A hypothetical example can illustrate the procedure of a
dynamic Fuzzy Cognitive Map. Consider
/media/loftslag/Kok_JGEC658_2009.pdf
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The hydrological simulations were performed with the Wa-
tershed Simulation and Forecasting System (WSFS) developed
and operated in the Finnish Environment Institute (Vehviläinen
et al., 2005). The WSFS is used in Finland for operational hydrolog-
ical forecasting and flood warnings (www.environment.fi/water-
forecast/), regulation planning and research purposes
(Vehviläinen and Huttunen, 1997
/media/ces/Journal_of_Hydrology_Veijalainen_etal.pdf