Southern California Bight 2008 Regional Monitoring Survey

Section 2: Data Quality Information

2 Data Quality Information -- a general assessment of the quality of the data set. (Recommendations on information to be reported and tests to be performed are found in "Spatial Data Quality," which is chapter 3 of part 1 in Department of Commerce, 1992, Spatial Data Transfer Standard (SDTS) (Federal Information Processing Standard 173): Washington, Department of Commerce, National Institute of Standards and Technology.)

2.1 Attribute Accuracy -- an assessment of the accuracy of the identification of entities and assignment of attribute values in the data set.

2.1.1 Attribute Accuracy Report -- an explanation of the accuracy of the identification of the entities and assignments of values in the data set and a description of the tests used.

Standard Data Exchange Format Requirements: From field methods manual

2.1.2 Quantitative Attribute Accuracy Assessment -- a value assigned to summarize the accuracy of the identification of the entities and assignments of values in the data set and the identification of the test that yielded the value. Repeat as necessary.

2.1.2.1 Attribute Accuracy Value -- an estimate of the accuracy of the identification of the entities and assignments of attribute values in the data set.

2.1.2.2 Attribute Accuracy Explanation -- the identification of the test that yielded the Attribute Accuracy Value.

2.4 Positional Accuracy -- an assessment of the accuracy of the positions of spatial objects.

2.4.1 Horizontal Positional Accuracy -- an estimate of accuracy of the horizontal positions of the spatial objects.

2.4.1.1 Horizontal Positional Accuracy Report -- an explanation of the accuracy of the horizontal coordinate measurements and a description of the tests used.

2.4.1.2 Quantitative Horizontal Positional Accuracy Assessment -- numeric value assigned to summarize the accuracy of the horizontal coordinate measurements and the identification of the test that yielded the value.

2.4.1.2.1 Horizontal Positional Accuracy Value -- an estimate of the accuracy of the horizontal coordinate measurements in the data set expressed in (ground) meters.

2.4.1.2.2 Horizontal Positional Accuracy Explanation -- the identification of the test that yielded the Horizontal Positional Accuracy Value.

2.4.2 Vertical Positional Accuracy -- an estimate of accuracy of the vertical positions in the data set.

2.4.2.1 Vertical Positional Accuracy Report -- an explanation of the accuracy of the vertical coordinate measurements and a description of the tests used.

2.4.2.2 Quantitative Vertical Positional Accuracy Assessment -- numeric value assigned to summarize the accuracy of vertical coordinate measurements and the identification of the test that yielded the value.

2.4.2.2.1 Vertical Positional Accuracy Value -- an estimate of the accuracy of the vertical coordinate measurements in the data set expressed in (ground) meters.

2.4.2.2.2 Vertical Positional Accuracy Explanation -- the identification of the test that yielded the Vertical Positional Accuracy Value.

BDP2.5.1.2.1 Methodology Keyword Thesaurus--Reference to a formally registered thesaurus or a similar authoritative source of methodology keywords.2.5.1 Source Information -- list of sources and a short discussion of the information contributed by each. Repeat as needed.

BDP2.5.1.2.2 Methodology Keyword--The name of a method used in the field or laboratory work. Repeat as needed.

BDP2.5.1.3 Methodology Description--Equivalent to "Materials and Methods" in a journal article. Describe the physical methods used to gather data, the experimental design, sample frequency, treatments or strata, statistical and spatial design of the sampling, and sample completeness, representativeness, and biases. For example, in a bird survey, relevant elements would include the methods used to detect species occurrences (casual sightings, transects, focal point surveys, vocalizations, mist nets), whether or not evidence of breeding activity was required, descriptions of the habitat strata in a stratified design, and known biases (e.g., non territorial birds were under sampled, and some juveniles could not be identified to species.)

Standard Data Exchange Format Requirements: describe application of methods

BDP2.5.1.4 Methodology Citation-- Information referencing the methods used.

2.5.1.1 Source Citation -- reference for a source data set.

2.5.1.2 Source Scale Denominator -- the denominator of the representative fraction on a map (for example, on a 1:24,000-scale map, the Source Scale Denominator is 24000). Repeat as needed.

2.5.1.3 Type of Source Media -- the medium of “digital database file” “ field notes” “photographic print” “printed table” “visually observed or measured”

2.5.1.4 Source Time Period of Content -- time period(s) for which the source data set corresponds to the ground.

2.5.1.4.1 Source Currentness Reference -- the basis on which the source time period of content information of the source data set is determined.

2.5.1.5 Source Citation Abbreviation -- short-form alias for the source citation.

2.5.1.6 Source Contribution -- brief statement identifying the information contributed by the source to the data set.

2.5.2.2 Source Used Citation Abbreviation -- the Source Citation Abbreviation of a data set used in the processing step. Repeat as needed.

2.5.2.4 Process Time -- the time when the event was completed.

2.5.2.6 Process Contact -- the party responsible for the processing step information.

2.6 Cloud Cover -- area of a data set obstructed by clouds, expressed as a percentage of the spatial extent.