NASA Langley 5-Second/30-Second NAMMA Merges Version 5.0 - 7/22/08 NASA Langley Aerosol Group - Lee Thornhill Questions? Contact Lee Thornhill (kenneth.l.thornhill@nasa.gov) Merge data are 5-s or 30-s averages based on the takeoff and landing times and represent data in the NAMMA archive as of 7/22/08 Users are encouraged to look at the individual files for additional information on each measurement. Latest Revisions 1. (V5) Updated the parameter listing, used the latest available data, added several parameters (see below) 1. (V4) Added time lags to the CVI (-10s), CAS_LWC(-5s), and the DLH (-5s) to match up with the aerosol data 2. (V3) All Langley Aerosol data has been reprocessed to include corrections and time lags (see individual files for more info) 3. (V3) Added flags to the SSA calc 4. (V3) Took out the first 4 bins in the UHSAS integrated number density calculation to account for noise * = new inclusion since last revision Name Units Measurement Source ---------- ----- ----------- ------- Flight Flight Number Date YYYYMMDD Time(midpoint) s UTC seconds ICATS Nav data Sc450t Mm-1 Total Scatter at 450 nm Langley Aerosol Group Sc550t Mm-1 Total Scatter at 550 nm Langley Aerosol Group Sc700t Mm-1 Total Scatter at 700 nm Langley Aerosol Group AEscat(450/700) Angstrom Exponent for Scattering (450, 700 nm Total) Langley Aerosol Group B550/T550 Back Scatter to Total Scatter at 550 nm Ratio Langley Aerosol Group Sc535s Mm-1 Submicron Scatter at 535 nm Langley Aerosol Group Sub535/Tot550 Ratio of submicron to total scattering Langley Aerosol Group **** Abs470t Mm-1 Total Absorption at 470 nm Langley Aerosol Group Abs532t Mm-1 Total Absorption at 532 nm Langley Aerosol Group Abs660t Mm-1 Total Absorption at 660 nm Langley Aerosol Group Abs470s Mm-1 Submicron Absorption at 470 nm Langley Aerosol Group Abs532s Mm-1 Submicron Absorption at 532 nm Langley Aerosol Group Abs660s Mm-1 Submicron Absorption at 660 nm Langley Aerosol Group AEabs(470/660) Angstrom Exponent for Absorption (470, 660 nm Total) Langley Aerosol Group BC(532) ug/m3 Black Carbon Mass from Total Absorption at 532 nm Langley Aerosol Group SSA470 Single Scatter Albedo at 470 nm Langley Aerosol Group SSA532 Single Scatter Albedo at 532 nm Langley Aerosol Group SSA660 Single Scatter Albedo at 660 nm Langley Aerosol Group SSA532(sub) Single Scatter Albedo at 532 nm - Submicron Langley Aerosol Group TotalCN(cm-3) cm-3 Total CN Concentration >4 nm Langley Aerosol Group coldCN(cm-3) cm-3 unheated CN Concentration >10nm Langley Aerosol Group hotCN(cm-3) cm-3 heated CN concentration >10nm (300 deg C) Langley Aerosol Group hotCN/coldCN heated to unheated CN ratio Langley Aerosol Group ufCNC(cm-3) cm-3 ultrafine CN Concentrations, (4 to 10 nm) Langley Aerosol Group nUHSAS(<0.7um) cm-3 UHSAS Number concentration (<0.7um) Langley Aerosol Group nAPS(>=0.7um) cm-3 APS Number concentration (>0.7um) Langley Aerosol Group sUHSAS(<0.7um) um2/cm3 UHSAS Aerosol Surface Area (<0.7um) Langley Aerosol Group sAPS(>=0.7um) um2/cm3 APS Aerosol Surface Area (>0.7um) Langley Aerosol Group vUHSAS(<0.7um) um3/cm3 UHSAS Aerosol Volume Density (<0.7um) Langley Aerosol Group vAPS(>=0.7um) um3/cm3 APS Aerosol Volume Density (>0.7um) Langley Aerosol Group nAPS cm-3 APS Number concentration (total) Langley Aerosol Group nUHSAS cm-3 UHSAS Number concentration (total) Langley Aerosol Group nOPC cm-3 OPC Number concentration (total) Langley Aerosol Group OPC_Ch1 cm-3 OPC Bin 1 Number concentration Langley Aerosol Group **** OPC_Ch2 cm-3 OPC Bin 1 Number concentration Langley Aerosol Group **** OPC_Ch3 cm-3 OPC Bin 1 Number concentration Langley Aerosol Group **** OPC_Ch4 cm-3 OPC Bin 1 Number concentration Langley Aerosol Group **** OPC_Ch5 cm-3 OPC Bin 1 Number concentration Langley Aerosol Group **** OPC_Ch6 cm-3 OPC Bin 1 Number concentration Langley Aerosol Group **** OPC_Ch7 cm-3 OPC Bin 1 Number concentration Langley Aerosol Group **** OPC_Ch8 cm-3 OPC Bin 1 Number concentration Langley Aerosol Group **** nCAS cm-3 integrated Number Concentration from the CAS(0.35-50um) NCAR - Heymsfield LWC_CAS g/m3 derived Liquid Water Content from the CAS NCAR - Heymsfield nCAS(<1) cm-3 integrated Number Concentration from the CAS(<1 um) NCAR - Heymsfield **** nCAS(1-2) cm-3 integrated Number Concentration from the CAS(1-2 um) NCAR - Heymsfield **** nCAS(2-3) cm-3 integrated Number Concentration from the CAS(2-3 um) NCAR - Heymsfield **** nCAS(>3) cm-3 integrated Number Concentration from the CAS(>3 um) NCAR - Heymsfield **** nCIP cm-3 integrated Number Concentration from the CIP(50-1550um) NCAR - Heymsfield IWC_CIP g/m3 derived Ice Water Content from the CAS NCAR - Heymsfield CO ppbv Carbon Monoxide Concentration COBALT - Podolske O3 ppbv TECO Ozone Concentration Langley Aerosol Group H2O ppmv Water Vapor Concentration DLH - Diskin RH(ICE) % DLH Derived RH(ICE) LARGE and DLH **** RH(H2O) % DLH Derived RH(H2O) LARGE and DLH **** Tdew(DLH) deg DLH and MMS Derived Dew Point/Frost Point LARGE, MMS, and DLH **** CVI_CWC g/m3 Cloud Water Content OSU - Twohy Latitude deg GPS Latitude ICATS Nav data Longitude deg GPS Longitude ICATS Nav data Pitch deg Aircraft Pitch Angle ICATS Nav data Roll deg Aircraft Roll Angle ICATS Nav data Wind Speed m/s Wind Speed ICATS Nav data Wind Direction deg Wind Direction ICATS Nav data True Air Speed m/s Aircraft True Air Speed ICATS Nav data Ground Speed m/s Aircraft Ground Speed ICATS Nav data True Heading deg Aircraft True Heading ICATS Nav data Press Altitude ft Pressure Altitude ICATS Nav data Radar Altitude ft Radar Altitude ICATS Nav data Tdew(1011) deg C Dew/Frost Point from the GE 1011 ICATS Nav data Static Air Temp deg C Static Air Temperature ICATS Nav data IR Surface Temp deg C IR Surface Temperature ICATS Nav data Cabin Altitude ft Cabin Altitude ICATS Nav data Pressure mb Static Pressure ICATS Nav data Mach Number Mach Number ICATS Nav data GPS_alt_msl ft GPS Altitude (above mean sea level) ICATS Nav data Static Pressure mb Static Pressure MMS Data Static Air Temp K Static Air Temperature MMS Data Theta K Potential Temperature MMS Data u m/s East West Wind MMS Data v m/s North South Wind MMS Data w m/s Vertical Wind MMS Data Data Flags: -999: Data missing -888 = Scatter less than 0.2 and psap greater than 0.5 Mm-1 (in the SSA calc only) -777 = Scatter greater than 0.2 and psap less than 0.5 Mm-1 (in the SSA calc only)