NaN found at output of tmpbeis361.f (SMOKE-BEIS Version 4.8)

SMOKE
1

Good Afternoon

May you give me a hand regarding a NaN situation.

We ran smoke-beis version 4.8 and found NaN from line 1190 EMSIL in tmpbeis361. Also, there wasn’t NaN in output of normbeis361. Any suggestions where the NaN may generated?

TIA, Xiao

2

Check met file(s). Also send your logfile output from tmpbeis3.

3

Hello Jeff,

Thanks a lot for your response and helpful tips.

We solved the issue after finding a precision bug in zenith angle calculation source code (…/src/biog/czangle.f) under SMOKE-beis version 4.8. We declare all related parameters that involved in zenith angle calculation with double precision/real8 to replace the original single precision/real4. Then, the calculation reflect correctly and NaN disappear.

V/R, Xiao

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