1. Menglin Jin Department of Meteorology, San Jośe State University The Use of Satellite Observation

2. Ways to use 1.Understand physical processes Example. Land Surface Temperature 2. Validate Climate Model Outputs

3. Prof. Menglin Jin (1-α)S d +LW d -εσT skin 4 +SH+LE + G= 0 Examine Urbanization Effect Land Surface Energy Budget:

4. (1-α)S d +LW d -εσT skin 4 +SH+LE + G= 0 Urbanization Modifies Surface Energy Budget: Urban add new physical processes

5. MODIS image for Chen Du, China (source: NASA) An application: Urbanization - the satellite view

6. 50km Urban heat island effect Daytime Nighttime 50km MODIS (Jin, Dickinson et al. 2005, J. of Climate)

7. Urbanization changes surface albedo (MODIS) (Jin, Dickinson, and Zhang 2005, J. of Climate)

8. Urbanization changes surface emissivity (MODIS)

9. (Jin, Dickinson, et al. 2005) MODIS Observed Global urban heat island effect

10. 1.At the edges ice is melt and T skin can be higher than 287K. simulation is colder than observed in July MODIS Obs. July CCSM Simulation Land Surface Skin Temperature 2. Over the central peak parts, simulation is warmer than observations 2. validation on NCAR model

11. Where does GFS overestimate T skin ? Nighttime Up to 5 degree higher in GFS than in MODIS along coast and high elevated area GFS Tskin Oct 2007 (10:30 pm) MODIS Tskin Oct 2007 (10:30 pm)

12. Antarctica T skin study for a region:

13. Spatial pattern of T skin Spatial variation of T skin follows elevation pattern Tskin Elevaiton