NIM/MWRP/M1 - IRT Sensor Calibration

Discrepancies between the MWRP and Skyrad IRT were observed in January. The MWRP IRT 
readings were constantly higher than those of the skyrad IRT. Some changes were introduced to 
the MWRP IRT to address the problem (see DQR D060602.2). On May 3, the IRT mirror was 
replaced. After the change in the mirror, the MWRP IRT readings became about 5-8 C lower. On 
June 3 the agreement between MWRP and Skyrad IRT became satisfactory (2-5 degree C 
difference).

It is hard to numerically quantify the difference in the IRT readings caused by the change 
in the mirror. We can only warn the user that between January 1 and June 3 the MWRP 
readings are 8 to 15 degree higher than the skyrad IRT.

• Raw data stream - documentation not supported(raw)

• Zenith-pointing infrared temperature at 10um(infraredTemperature)

• Raw data stream - documentation not supported(raw)

NIM/ECOR/M1 - Data Suspect for NW and East Wind Directions

problem will remain for the entire extend of the NIM deployment.

• rotated covariance uw(cvar_rot_uw)
• vw covariance(cvar_vw)
• rotated covariance wc(cvar_rot_wc)
• mean value of out of range values and spikes of t -9999 if no spikes(mean_spk_t)
• CO2 flux(fc)
• mean sonic temperature (t), i.e. virtual temperature(mean_t)
• corrected sensible heat flux(h)
• latent heat flux(lv_e)
• rotated covariance vw(cvar_rot_vw)
• rotated mean w(mean_rot_w)
• mean water vapor concentration (q)(mean_q)
• covariance wq(cvar_wq)
• rotated covariance wt(cvar_rot_wt)
• rotated covariance wq(cvar_rot_wq)
• mean value of out of range values and spikes of q -9999 if no spikes(mean_spk_q)
• momentum flux (dynamic)(k)
• mean co2 concentration (c)(mean_c)
• uw covariance(cvar_uw)
• covariance wc(cvar_wc)
• mean value of \spike\ w samples(mean_spk_w)
• wT covariance(cvar_wt)
• mean w (vertical) wind component(mean_w)
• friction velocity(ustar)
• mean value of out of range values and spikes of c -9999 if no spikes(mean_spk_c)