D Q R Report

DQRID : D050714.3

Start Date	Start Time	End Date	End Time	Data Quality Metric
07/13/2005	0620	07/15/2005	1900	Incorrect

Subject:	TWP/SKYRAD/C1 - Apparent logger problem
DataStreams:	twpskyrad1duttC1.c1, twp15swfanalskyrad1longC1.c1, twpskyradC1.00, twp1swfanalskyrad1longC1.c1, twpskyrad60sC1.b1, twpskyrad20sC1.a1
Description:	Beginning at 0620Z on 13 July, all Manus SKYRAD measurements deviated wildly from expected values. The longwave fluxes climbed to well over the expected maximum of 500 W/m^2 to values over 1000 W/m^2. At the same time, shortwave flux components developed large inconsistancies and night-time offsets. Values had somewhat returned to normal ranges by 2200Z on 14 July but again developed internal inconsistancies between 0430 and 1900Z on 15 July. The instruments appeared to be working normally once again as of 1900Z on 15 July. It is not known what caused this period of faulty values but it is thought that an electrical surge - perhaps from a lightning storm (though none was reported) may have caused the temporary problems.
Suggestions:	Data between 0620Z on 13 July and 2200 Z on 14 July are unusable. Data between 2200 Z on 14 July and 1900 Z on 15 July should be used with caution.
Measurements:	twpskyrad60sC1.b1: down_short_diffuse_hemisp_min down_long_hemisp_shaded2_min lat down_short_hemisp pirs_sd psp1_sd irt1_min down_long_hemisp_shaded_min down_short_diffuse_hemisp down_long_hemisp_shaded2_std alt logger_temp sky_ir_temp_max lon down_long_hemisp_shaded_std uvb_mean down_uvb_max external_voltage down_long_hemisp_shaded nip_max pirs_mean down_uvb_min down_uvb_std short_direct_normal_min pir1_sd down_uvb down_long_hemisp_unshaded_min sky_ir_temp down_short_diffuse_hemisp_std psp1_mean psp1_max down_short_hemisp_max pir1_min down_long_hemisp_shaded1_max uvb_max bit_data short_direct_normal_std pirs_max irt1_max sky_ir_temp_std down_long_hemisp_unshaded_std nip_sd down_short_diffuse_hemisp_max pir1_max uvb_sd down_short_hemisp_std internal_voltage down_long_hemisp_shaded_max down_long_hemisp_unshaded pir1_mean nip_mean psps_min short_direct_normal filename sky_ir_temp_min psps_mean down_long_hemisp_shaded2_max uvb_min down_long_hemisp_shaded1_min pirs_min nip_min psp1_min down_long_hemisp_shaded1 down_long_hemisp_shaded2 irt1_mean down_long_hemisp_shaded1_std irt1_sd time_offset short_direct_normal_max down_long_hemisp_unshaded_max psps_max base_time down_short_hemisp_min psps_sd more twp15swfanalskyrad1longC1.c1: difswfluxdn_clearskyfit sswfluxdn_measured dirfluxdn_measured difratiodn_clearskyfit base_time nsamples_cloudfraction lat alt nsamples_clearsky_detection guvbdn_clearskyfit time_offset dirfluxdn_clearskyfit gswfluxdn_measured sswfluxdn_cloudeffect nsamples_gswfluxdn_clearskyfit difratiodn_measured time_offset_LST difswfluxdn_cloudeffect solar_cos_z albedosw_measured base_time_LST sswfluxdn_clearskyfit guvbdn_measured gswfluxdn_cloudeffect site albedosw_clearskyfit cloudfraction sun_earth_distance difratiodn_measured_stdev difswfluxdn_measured lon difcloudeffect_normalized gswfluxdn_clearskyfit nsamples_sswfluxdn_measured more twp1swfanalskyrad1longC1.c1: coef_clearsky_albedo_b coef_clearsky_albedo_a lat alt solar_cos_z sswfluxdn_cloudeffect guvbdn_measured gswfluxdn_measured albedosw_clearskyfit dirfluxdn_clearskyfit albedosw_measured difswfluxdn_cloudeffect sun_earth_distance lon flag_clearsky_detection difswfluxdn_clearskyfit time_offset_LST coef_clearsky_ssw_b base_time gswfluxdn_clearskyfit coef_clearsky_ssw_a difratiodn_measured gswfluxdn_cloudeffect difswfluxdn_measured coef_clearsky_gsw_b coef_clearsky_gsw_a sswfluxdn_measured time_offset coef_clearsky_difratio_a coef_clearsky_difratio_b site dirfluxdn_measured coef_clearsky_dsw_c coef_clearsky_dsw_b base_time_LST coef_clearsky_dsw_a difratiodn_clearskyfit guvbdn_clearskyfit coef_date sswfluxdn_clearskyfit sun_earth_distance_dailyaverage coef_clearsky_guvb_b coef_clearsky_guvb_a more twpskyradC1.00: Raw data stream - documentation not supported more twpskyrad20sC1.a1: lon pir2_dome_therm inst_down_long_unshaded_case_resist base_time inst_down_long_shaded_case_resist pir2_uncorr_irradiance filename inst_down_long_hemisp_unshaded_tp uvb_temp inst_down_long_shaded2_case_resist inst_down_long_shaded2_dome_resist inst_down_long_unshaded_dome_resist pir1_case_therm pir2_case_therm uvb_uncorr_irradiance inst_down_long_shaded_dome_resist inst_down_long_hemisp_shaded2_tp pir1_uncorr_irradiance alt time_offset inst_down_uvb_temp inst_down_long_shaded1_case_resist inst_down_uvb_irradiance pir1_dome_therm inst_down_long_hemisp_shaded1_tp lat inst_down_long_hemisp_shaded_tp inst_down_long_shaded1_dome_resist more twpskyrad1duttC1.c1: down_short_diffuse_hemisp_uncorrected base_time down_long_hemisp_backup_max dsdh_best_estimate dsdh_detector_corrected up_long_dome_temperature up_long_hemisp_max wind_speed_1 wind_speed_2 up_short_hemisp_max air_temperature down_short_diffuse_hemisp_uncorrected_max up_short_hemisp down_long_hemisp_backup down_long_dome_temperature_backup short_direct_normal_std down_long_case_temperature_backup short_direct_normal_min up_long_hemisp status_dsdh_detector_corrected down_short_hemisp_uncorrected_std down_long_hemisp_std down_short_hemisp_uncorrected down_short_hemisp_uncorrected_min wind_direction_1 wind_direction_2 lon down_long_hemisp_min vap_pres up_long_hemisp_std bar_pres down_long_hemisp_max detector_flux_backup down_short_diffuse_hemisp_uncorrected_std zenith effective_temperature status_dsdh_full_corrected down_long_hemisp_backup_min cos_zenith status_rayleigh_limit up_long_hemisp_min up_long_case_temperature dsdh_full_corrected_mode rh up_short_hemisp_min dsdh_full_corrected down_short_diffuse_hemisp_uncorrected_min down_short_hemisp_sum lat alt dsdh_detector_corrected_mode status_down_short_hemisp_sum precip short_direct_normal up_short_hemisp_std down_long_case_temperature down_long_hemisp time_offset time detector_flux short_direct_normal_max down_long_dome_temperature rayleigh_limit down_long_hemisp_backup_std down_short_hemisp_uncorrected_max more

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