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observed tmin vs. modeled tmin for NV vs. CA

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bdmorri2@...
observed tmin vs. modeled tmin for NV vs. CA

Hello,

 

I’m working with this CCSM model run: b40.20th.track1.2deg.001.cam2.h0

 

My project involves downscaling some variables (surface tmin, tmax, tave, precip) of this model run to 30 meter resolution for the Western United States, but I’ve found a rather large inconsistency between the output CCSM climate data for Nevada and recorded weather station data. I bilinearly interpolated the modeled climate data for CA, OR, WA, and NV to 30m resolution from this run for the years 1975-2005 and extracted the climate data using the same date and location as my observed NOAA weather station data. In the plot attached you can see that the California locations relationship between modeled minimum temperature and weather station minimum temperature makes sense (close to 1:1 ratio), however, the same relationship for Nevada doesn’t. The data was extracted as one large raster for all states, and we found no error in the extraction process. We’re hoping that someone could help to provide and explanation as to why the same model can be so inconsistent between these two states? For example, is this a climate modeling issue related to topographic complexity or something else? I can provide more information if needed.

 

 

 Thank you,

Bailey Morrison

PhD Student

NASA Earth and Space Science Fellow

University of Illinois at Urbana-Champaign

 

 

Attachment: 

Bailey Morrison
University of Illinois at Urbana-Champaign
PhD Student
Global Environmental Analysis and Remote Sensing (GEARS) Laboratory

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