By Christo Georgiev, Visit Amazon's Patrick Santurette Page, search results, Learn about Author Central, Patrick Santurette,
Weather research and Forecasting: using satellite tv for pc Water Vapor Imagery and strength Vorticity research, moment Edition, is a step by step crucial education handbook for forecasters in meteorological providers around the world, and a worthy textual content for graduate scholars in atmospheric physics and satellite tv for pc meteorology. during this sensible advisor, P. Santurette, C.G. Georgiev, and okay. Maynard exhibit tips on how to interpret water vapor styles by way of dynamical tactics within the surroundings and their relation to diagnostics on hand from numerical climate prediction types. particularly, they be aware of the shut dating among satellite tv for pc imagery and the capability vorticity fields within the top troposphere and reduce stratosphere. those purposes are illustrated with colour pictures in accordance with actual meteorological occasions over mid-latitudes, subtropical and tropical areas.
- Presents interpretation of the water vapor channels 6.2 and 7.3µm in addition to advances in keeping with satellite tv for pc info to enhance knowing of atmospheric thermodynamics
- Improves through new schemes the certainty of upper-level dynamics, midlatitudes cyclogenesis and fronts over quite a few geographical components
- Provides research of deep convective phenomena to higher comprehend the advance of robust thunderstorms and to enhance forecasting of critical convective events
- Includes effective operational forecasting tools for interpretation of information from NWP models
- Offers info on satellite tv for pc water vapor photos and capability vorticity fields to examine and forecast convective phenomena and thunderstorms
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The information content of the MSG WV channels can be illustrated in Fig. 11 for three different moisture profiles by considering images and the corresponding upper-air soundings in Fig. 10. As seen in Fig. 10B, the upper-air sounding at De-Bilt, Belgium, shows a moisture profile with the following features: • • Dry air in the layer 500e300 hPa Saturated air from the Earth’s surface up to 550 hPa In this location (brown arrow in the images), Fig. 8 mm brightness temperature À15 C, which is representative of the temperature of the cloud top, located at 550 hPa, as seen by the sounding data in Fig.
7B). 2 mm image as an irregular gray shade pattern consistent with the cloudiness below the 400 hPa level. 8 Vertical cross-section of relative humidity (%) from the ARPEGE NWP model along the lines (A) AA and (B) BB depicted in Fig. 7. • At the blue arrow in Fig. 1) and dry air above. 3 mm channels. The ability of each one of the two WV channels to reflect complex moisture patterns in a real troposphere depends on the specific moisture stratification as illustrated below. 2 mm image (Fig. 7B) as a distinct dark band because the relative humidity is less than 10% in the whole layer of sufficiently large sensitivity for this channel (250e500 hPa).
9. As the radiation in WV channels can originate from different tropospheric layers and can be absorbed by WV at different altitudes before reaching the satellite, different types of arrow lines and colors are used as follows: • • • • • Red lines for radiation coming from low-level moisture (from the surface up to 700 hPa). Green lines for radiation coming from mid-level moisture (from 700 up to 400 hPa). Blue lines for radiation coming from upper-level moisture (from 400 up to 200 hPa). Dashed-line arrows, which begin from or below a moist layer and end at the top of the atmosphere, denote radiation coming from below and absorbed partially by moisture in an upper layer, located anywhere in the troposphere.