The Site Averaged Flux Data: 1989 (Betts) data set contains the site-averaged product data collected by many PIs during the 1987-1989 FIFE experiment. Data are in 30-minute time intervals for 1989 only.
SITE AVERAGED FLUX DATA: 1989 (BETTS).
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Heat flux, soil heat budget, and soil heat flux.
This data set is a site-averaged product of the FLUX data collected by many PI's acquired during the 1987-1989 FIFE experiment. The raw data have been further edited before the site average was generated.
The center of the FIFE 15x15 km site is close to 39.05þN, 96.53þW. Most of the data comes from the FIFE CD ROM Volume 1; or was retrieved directly from the Oak Ridge DAAC. All the originating data should correspond to that in the group 8, "Surface Meteorological Measurements (i.e., SUR_MET)" or FIFE CD-ROM Volume 1, dated May 22, 1994, in directories sur_flux\30-min and sur_flux\basel_92 .
The one big exception is the 1988 Fritschen Flux data, which had been mostly lost before archive and was retrieved directly from Leo Fritschen, and reprocessed by Betts and Ball. Our special thanks to Leo Fritschen for coming out of retirement to retrieve this data. It is a key component in the 1988 data.
Alan K. Betts and John H. Ball
Atmospheric Research
Telephone: (802) 483-2087
Fax: (802) 483-6167
Email: akbetts@aol.com
FIFE Follow-On.
ORNL DAAC User Services Office
Oak Ridge National Laboratory
Telephone: 1-(865)-241-3952
Fax: 1-(865)-574-4665
Email: ornldaac@ornl.gov
You may use these files freely. Please send Alan Betts (akbetts@aol.com) an e-mail if you do, so he can notify you of any updates. Please notify both Alan Betts and the ORNL DAAC of any errors you find.
This data processing was supported by NASA under Contract NAS5-32356 to Alan Betts, and an acknowledgment of the years of work that went into the production of these files would be appreciated in publications based substantially on them.
The FIFE CD-ROM can be cited as D. E. Strebel, D. R. Landis, K. F. Huemmrich, and B. W. Meeson (1994), Collected Data of The First ISLSCP Field Experiment, Vol. 1: Surface Observations and Non-Image Data Sets.
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Ground-based.
Field Investigation.
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The center of the FIFE 15x15 km site is close to 39.05þN, 96.53þW.
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These are point data.
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The time interval of the year is broken down into 30-min intervals. There is one variable sample at each 30 minute time interval so in a LEAP YEAR (NOTE 1988) there are 366 x 48 = 17658 time intervals. This field in the data base in named "YSq#" (Yearly Sequence #) and makes a convenient linear time scale; in addition to day and UTC.
This data set is a time series of 30-minute average variables for the periods July 21-Aug 16, 1989.
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Table 1. contains a summary of the variables in this data set.
Table 1. Variable Description Variable Name Long Name SAS Type Description
1 Ysq_no 8 "Time interval of the year broken down into 30-minute intervals" 2 Rnet NET_RADTN 8 "Average net radiation (W/m2)" 3 Rnet_k 8 "Number of sites included in average net radiation (Rnet)" 4 Rnet_s 8 "Standard deviation of average net radiation (Rnet)" 5 LH LATENT_HEAT_FLUX 8 "Average latent heat flux (W/m2)" 6 LH_s 8 "Standard deviation of average latent heat flux (LH)" 7 LH_k 8 "Number of sites included in average latent heat flux (LH)" 8 SH SENSIBLE_HEAT_FLUX 8 "Average sensible heat flux (W/m2)" 9 SH_s 8 "Standard deviation of average sensible heat flux (SH)" 10 SH_k 8 "Number of sites included in average sensible heat flux (SH)" 11 Soil SOIL_HEAT_FLUX 8 "Average soil heat flux (W/m2)" 12 Soil_s 8 "Standard deviation of average soil heat flux (Soil)" 13 Soil_k 8 "Number of sites included in average soil heat flux (Soil)" 14 SolDn TOTAL_INCIDENT_RADTN 8 "Average total incident radiation (W/m2)" 15 SolDn_s 8 "Standard deviation of average total incident radiation (SolDn)" 16 SolDn_s 8 "Number of sites included in average total incident radiation (SolDn)" 17 SolRef SHORTWAVE_SOLAR_REFL 8 "Average shortwave solar reflectance (W/m2)" 18 SolRef_s 8 "Standard deviation of average shortwave solar reflectance (SolRef)" 19 SolRef_k 8 "Number of sites included in average shortwave solar reflectance (SolRef)" 20 LWDn LONG_WAVE_DOWN 8 "Average longwave down (W/m2)" 21 LWDn_s 8 "Standard deviation of average longwave down (LWDn)" 22 LWDn_k 8 "Number of sites included in average longwave down (LWDn)" 23 LWup LONG_WAVE_UP 8 "Average longwave up (W/m2)" 24 LWup_s 8 "Standard deviation of average longwave up (LWup)" 25 LWup_k 8 "Number of sites included in average longwave up (LWup)" 26 Jul_Date 8 "Julian date (day of year 1-366)" 27 UTC 8 "Decimal time" 28 obs_date 8 "Observation date (mm/dd/yyyy)" 29 obs_time 8 "Observation time (hhmm)"
Refer to Table 1.
Meteorological Station.
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Ysq_no, Rnet, Rnet_k, Rnet_s, LH, LH_s, LH_k, SH, SH_s, SH_k, Soil, Soil_s, Soil_k, SolDn, SolDn_s, SolDn_s, SolRef, SolRef_s, SolRef_k, LWDn, LWDn_s, LWDn_k, LWup, LWup_s, LWup_k, Jul_Date, UTC, obs_date, obs_time
9650, ., ., 0, ., ., 0, ., ., 0, ., ., 0, ., 0, 0, ., ., 0, ., ., ., ., ., ., 202, 0.75, 07/21/1989, 0045 9651, ., ., 0, ., ., 0, ., ., 0, ., ., 0, ., 0, 0, ., ., 0, ., ., ., ., ., ., 202, 1.25, 07/21/1989, 0115 9652, ., ., 0, ., ., 0, ., ., 0, ., ., 0, ., 0, 0, ., ., 0, ., ., ., ., ., ., 202, 1.75, 07/21/1989, 0145 9653, ., ., 0, ., ., 0, ., ., 0, ., ., 0, 0, 14, 14, 0, 0, 14, ., ., ., ., ., ., 202, 2.25, 07/21/1989, 0215
File names size (bytes) ffoflx89.dat 151501
This data set is a time series of 30 minute average variables for the periods July 21-Aug 16, 1989.
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The quality of the flux data is quite good. Each variable (for all sites), together with the site-average and standard deviation were then examined graphically and manually (and iteratively) edited to eliminate bad data; and generate a cleaned-up site average for each variable. Some bad data has escaped this process; often this is indicated by a solitary extreme standard deviation. However the heterogeneity between sites is considerable; from valleys to ridgetop. When there are only a few sites such as July 24-Aug 3,1987, the "quality" of the site-average is poorer.
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Following discussions with the PI (Leo Fritschen), some late July, early August, 1987 data has been rejected , as well as all the data from Fritschen station #34 (3479-BRL) in 1987 which was on a slope and had shadowing problems. In 1988 and 1989 all stations have been included.
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There are no plans to revisit this data; but let us know of errors.
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ORNL DAAC User Services
Oak Ridge National Laboratory
Telephone: (865) 241-3952
FAX: (865) 574-4665
Email: ornldaac@ornl.gov
Users may place requests by telephone, electronic mail, or FAX. Data is also available via the World Wide Web at http://daac.ornl.gov.
FIFE data are available from the ORNL DAAC. Please contact the ORNL DAAC User Services Office for the most current information about these data.
This data set is available online via the World Wide Web at http://daac.ornl.gov/, or telnet ornlims.ornl.gov 6493 (128.219.24.108 6493), or eosims.ornl.gov 12345 (128.219.24.108 12345)
Betts and Ball, 1996: FIFE surface climate and site-average data set 1987-1989, Submitted to J. Atmos. Sci. (3rd FIFE special issue)
Betts, A.K., J.H. Ball, and A.C.M. Beljaars, 1993: Comparison between the land surface response of the European Centre model and the FIFE-1987 data. Q.J.R.M.S., 119, 975-1001.
Betts, A.K. and J.H. Ball, 1994: Budget analysis of FIFE-1987 sonde data. J.G.R., 99, 3655-3666.
Betts, A.K. and J.H. Ball, 1995: The FIFE surface diurnal cycle climate. J.G.R. 100, 25679-25693.
Betts A. K. And J. H. Ball, 1997: FIFE surface climate and site-average dataset: 1987-1989. (FIFE special issue 3 J.Atmos. Sci. in press)
Strebel, D. E., D. R. Landis, K. F. Huemmrich, and B. W. Meeson, 1994: Collected data of the First ISLSCP Field Experiment, in Surface Observations and Non-Image Data Sets., Vol 1, CD-ROM, NASA GSFC, Greenbelt, MD 20771
The First FIFE special issue in JGR, 97, (November, 1992) contains many important refs by the PI's who collected this data
Contact the EOS Distributed Active Archive Center (DAAC) at Oak Ridge National Laboratory (ORNL), Oak Ridge, Tennessee (see the Data Center Identification Section). Documentation about using the archive and/or online access to the data at the ORNL DAAC is not available at this revision.
A general glossary for the DAAC is located at http://cdiac.esd.ornl.gov/cdiac/glossary.html.
A general list of acronyms for the DAAC is available at http://daac.ornl.gov/acronyms.html.
December 4, 1996 (citation revised on October 1, 2002)
May 13, 1997
FIFE_FFOFLX89
Cite this data set as follows (citation revised on October 1, 2002):
Betts, A. K. 1994. Site Averaged Flux Data: 1989 (Betts). Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. doi:10.3334/ORNLDAAC/95.
DAAC Staff
ornldaac@ornl.gov