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Verification of Flux maps using in situ measurements

Verification of Flux maps using in situ measurements. June Marion MS Atmospheric Science. Intro. Flux map verification Heat budget Radiation balance. Comparison of PSD, APL, OAFlux , TropFlux , RAMA 80.5E,0N. 20N Eq 20S. APL. RAMA 80.5E, 0N.

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Verification of Flux maps using in situ measurements

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  1. Verification of Flux maps using in situ measurements June Marion MS Atmospheric Science

  2. Intro • Flux map verification • Heat budget • Radiation balance

  3. Comparison of PSD, APL, OAFlux, TropFlux, RAMA 80.5E,0N 20N Eq 20S APL RAMA 80.5E, 0N 40E 80E 120E Map courtesy of NOAA Climate Prediction Center/NCEP

  4. OAFlux Vs. TropFlux • TropFlux may be more sensitive than OAFlux in SHF • TropFlux and OAFlux agree well for LHF within the DYNAMO domain

  5. RAMA Vs. OAFlux and TROPflux 20N Eq 20S Y=1*x+0.01 Y=0.93*x+2.47 SHF • TropFlux captures RAMA flux magnitudes well for both SHF & LHF • OAFlux captures LHF magnitudes well, but underestimates SHF by ~25% Y=0.75*x+0.61 Y=0.97*x+3.36 LHF • TropFlux has higher correlation with RAMA than OAFlux 40E 80E 120E

  6. Heat Budget Northern, Southern and DYNAMO arrays Average over DYNAMO array TropFluxvsOAFlux • OAFlux and TropFlux agree well in the mean over the entire array • North/South array’s not correlated. TropFlux N./S. Arrays for SHF and LHF

  7. Dynamo array rad. Balance with sw,lw,H,LE for Oct-Dec Net Zonal tau Net Longwave Latent Sensible Net Solar • Stronger negative net heat in the Southern array • Both dampened solar and enhanced sensible, latent and longwave are required for neg net.

  8. Conclusions • OAFlux and TropFlux are strongly correlated with insitu measurements • OAFlux and TropFlux are well correlated over the DYNAMO domain • Point to point • In the mean • Northern and Southern arrays are not correlated • Stronger net heat radiation in Southern array

  9. Summer objectives Compute turbulent fluxes using OSU data Compare OSU, PSD, and U-Conn turbulent fluxes

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