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Space Physics, Solar Physics and Astronomy Data from Space Physics Data System

Entry ID: SPDS-General

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Summary

Abstract: The Space Physics Data System (SPDS) ( http://spdf.gsfc.nasa.gov/ )
serves the four science disciplines encompassed within the programs
of the NASA Space Physics Division, namely:

- Cosmic and Heliospheric Physics;
- Ionospheric, Thermospheric and Mesospheric Physics;
- Magnetospheric Physics; and
- Solar Physics.

Space ...

Related URL

Link: GET DATA

Description: Access to the Space Physics Data Facility

Geographic Coverage

(Click for Interactive Map)

Spatial coordinates

N: 90.0

S: -90.0

E: 180.0

W: -180.0

Data Set Citation

Dataset Originator/Creator: NASA Space Physics Data Facility

Dataset Title: Space Physics, Solar Physics and Astronomy Data from Space Physics Data System

Dataset Release Place: Greenbelt, MD

Dataset Publisher: NASA/GSFC

Online Resource: http://spdf.gsfc.nasa.gov/

Location Keywords

SPACE > SOLAR REGION > CHROMOSPHERE

SPACE > SOLAR REGION > CORONA

Science Keywords

SUN-EARTH INTERACTIONS > SOLAR ENERGETIC PARTICLE FLUX > ALPHA PARTICLE FLUX

SUN-EARTH INTERACTIONS > IONOSPHERE/MAGNETOSPHERE DYNAMICS > AURORAE

ISO Topic Category

GEOSCIENTIFIC INFORMATION

IMAGERY/BASE MAPS/EARTH COVER

Platform

ACE > Advanced Composition Explorer (ACE)

AE-C > Atmosphere Explorer C (Explorer 51)

Project

NERR > National Estuarine Research Reserve

Quality ATTRIBUTE ACCURACY REPORT: Limits of Detection A method detection limit (MDL), the lowest concentration of a parameter an analytical procedure can reliably detect, has been established by the IES Analytical Laboratory for each parameter. The MDL is determined as three times the standard deviation of a minimum of 10 replicates of a single low concentration sample. These values are reviewed and ... revised periodically. The current MDLs are listed below. Parameter Variable MDL Ammonium NH4F 0.02 mg/L as N Nitrate NO3F 0.004 mg/L as N * Orthophosphate PO4F 0.0006 mg/L as P Chlorophyll a CHLA_N 0.2 ug/L ** Phaeophytin PHEA_N 0.2 ug/L *NITRATE IS NOT ANALYZED DOWN TO THE DETECTION LIMIT; HUDNERR HAS BEEN USING 0.128 mg/L NO3 (ion) AS THE CONCENTRATION OF THE LOWEST NITRATE STANDARD FOR SAMPLE ANALYSIS SINCE 1991. THEREFORE, THE MINIMUM REPORTED CONCENTRATION (MRC) OF NITRATE AS NITROGEN IS 0.029 mg/L. **MDLs for CHLA ANALYSIS ARE STILL BEING TESTED/VERIFIED Reporting of Missing Data and Data with Concentrations Lower than Method Detection Limits Comment codes and definitions are provided in the following table (Table 1). Explanations for samples that were never collected are reported below. Missing data from collected samples are denoted by a blank cell “ ” and commented coded with an “M”. Laboratories in the NERRS System submit data that are censored at a lower detection rate limit, called the Method Detection Limit or MDL. MDL’s for specific parameters are listed in the Laboratory Methods and Detection Limits Section (Section II, Part 12) of this document. Concentrations that are less than this limit are denoted by a –9999 and comment coded with a “B” in the variable code comment column. Calculated parameters are comment coded with a “C” and if any of the components used in the calculation are below the MDL, the calculated variable is denoted by –9999 and also comment coded with a “B”. If a calculated value is negative, the value is reported as a -9999. Table 1. Variable comment codes table. Comment Code Definition A Value above upper limit of method detection B Value below method detection limit C Calculated value D Data deleted or calculated value could not be determined due to deleted data, see metadata for details H Sample held beyond specified holding time K Check metadata for further details M Data missing, sample never collected or calculated value could not be determined due to missing data P Significant precipitation (reserve defined, see metadata for further details) U Lab analysis from unpreserved sample S Data suspect, see metadata for further details Missing data events during the 2003 sampling period: a) Grab Sampling: January 2003: Monthly grab samples were not collected at all sites (SK, SC, TS, TN) due to winter conditions preventing safe access. February 2003: Monthly grab samples were not collected at all sites (SK, SC, TS, TN) due to winter conditions preventing safe access. April 2003: Suspended solids (TSS) data for TS on 4/23/2003 are missing, the filters stuck to the weighing tins and final dry weights could not be determined. May 2003: Suspended solids (TSS) data for TN, Rep 2 on 5/20/2003 are missing, the filter stuck to the weighing tin and a final dry weight could not be determined. b) Diel Sampling: June 2003: Suspended solids (TSS) data are missing for 22:30 on 6/3/2003, 8:30, 11:00, 13:30, 16:00, 18:30, 21:00, 23:30 on 6/4/2003, and 2:00 on 6/5/2003 because the volume filtered was not recorded. December 2003: Samples were not collected at 07:15 on 12/4/2003 and at 03:15, 05:45, and 08:15 on 12/5/2003 due to a frozen sample collection tube. Other notable events during the 2003 sampling period: a) Grab sampling (Comment “P”) September 2003: Heavy rains occurred for 2 days prior to the monthly grab sampling at SK, TS, TN, SC on 9/29/2003. Measured concentrations may have been affected by this rainfall. b) Diel sampling None 15. QA/QC programs a) Precision i) Field variability At each monitored site, monthly duplicate grab samples are true replicates, collected separately and sequentially, not simultaneously. During diel sampling at Tivoli South Bay, two samples are collected at each time, but one is acidified for ammonium analysis. Therefore, diel samples do not have replicates. ii) Laboratory variability At each monitored site, duplicate monthly grab samples are analyzed for NO3F, PO4F, and NH4F, providing two true replicates for each parameter. CHLA_N and PHEA_N are also analyzed as true replicates, one from each grab sample. Diel samples are analyzed for NO3F, PO4F, NH4F, CHLA_N and PHEA_N, but only one replicate is analyzed for each parameter. Analytical QA/QC procedures include periodic duplicate analysis of the same sample in order to verify precision of the analytical instrumentation. iii) Inter-organizational Splits None. b) Accuracy i) Sample Spikes Site % Recovery of Parameter NH4 NO23 DIN PO4 TS 75 90 90 90 SK 75 90 90 90 TN 75 75 80 75 SC 70 90 90 90 ii) Standard Reference Material Analysis TBD. iii) Cross Calibration Exercises None. QA/QC Programs a) Precision i) Field variability At each monitored site, monthly duplicate grab samples are true replicates, collected separately and sequentially, not simultaneously. During diel sampling at Tivoli South Bay, two samples are collected at each time, but one is acidified for ammonium analysis. Therefore, diel samples do not have replicates. ii) Laboratory variability At each monitored site, duplicate monthly grab samples are analyzed for NO3F, PO4F, and NH4F, providing two true replicates for each parameter. CHLA_N and PHEA_N are also analyzed as true replicates, one from each grab sample. Diel samples are analyzed for NO3F, PO4F, NH4F, CHLA_N and PHEA_N, but only one replicate is analyzed for each parameter. Analytical QA/QC procedures include periodic duplicate analysis of the same sample in order to verify precision of the analytical instrumentation. iii) Inter-organizational Splits None. b) Accuracy i) Sample Spikes Site % Recovery of Parameter NH4 NO23 DIN PO4 TS 75 90 90 90 SK 75 90 90 90 TN 75 75 80 75 SC 70 90 90 90 ii) Standard Reference Material Analysis TBD. iii) Cross Calibration Exercises None. LOGICAL CONSISTENCY REPORT: NACOMPLETENESS REPORT: Data collection period Monthly grab samples have been collected at the four monitored sites of the Tivoli Bays since 06/17/1991. Diel sampling at Tivoli South Bay began in June 2002. The exact dates and times for the 2003 Nutrient Data collection period are listed below. Data collection is hampered during the winter months (December-March) because snow and ice often prohibit safe access to the sites. a) Grab Sampling Site Date Time collected Site Date Time collected SC Jan 2003 No sample SK Jan 2003 No sample SC Feb 2003 No sample SK Feb 2003 No sample SC 3/24/2003 13:55 SK 3/24/2003 14:35 SC 4/23/2003 10:00 SK 4/23/2003 9:30 SC 5/20/2003 10:15 SK 5/20/2003 8:35 SC 6/19/2003 9:30 SK 6/19/2003 7:55 SC 7/31/2003 10:25 SK 7/31/2003 9:21 SC 8/18/2003 9:10 SK 8/18/2003 8:40 SC 9/29/2003 9:40 SK 9/29/2003 8:15 SC 10/16/2003 9:50 SK 10/16/2003 8:15 SC 11/17/2003 11:40 SK 11/17/2003 11:07 SC 12/29/2003 10:17 SK 12/29/2003 9:45 Site Date Time collected Site Date Time collected TN Jan 2003 No sample TS Jan 2003 No sample TN Feb 2003 No sample TS Feb 2003 No sample TN 3/24/2003 13:15 TS 3/24/2003 12:40 TN 4/23/2003 10:35 TS 4/23/2003 10:20 TN 5/20/2003 9:20 TS 5/20/2003 9:00 TN 6/19/2003 8:43 TS 6/19/2003 8:28 TN 7/31/2003 8:20 TS 7/31/2003 9:00 TN 8/18/2003 9:45 TS 8/18/2003 9:29 TN 9/29/2003 8:55 TS 9/29/2003 9:10 TN 10/16/2003 9:00 TS 10/16/2003 9:25 TN 11/17/2003 12:18 TS 11/17/2003 12:05 TN 12/29/2003 11:46 TS 12/29/2003 11:18 b) Diel Sampling Site Start Date Start Time End Date End Time TS 6/3/2003 22:30 6/5/2003 2:00 TS 7/9/2003 04:00 7/10/2003 07:30 TS 8/5/2003 01:30 8/6/2003 05:00 TS 9/8/2003 18:30 9/9/2003 22:00 TS 10/6/2003 17:15 10/7/2003 20:45 TS 11/4/2003 17:00 11/5/2003 20:30 TS 12/4/2003 04:45 12/5/2003 08:15 * *See Section 14 for further information LINEAGE/PROCESS STEP: PROCESS DESCRIPTION: Additional Description: Entry verification Following sample analysis (ammonium, nitrate, orthophosphate), data files are transferred directly from analytical instruments to desktop computers. Reports are generated as Excel spreadsheets and verified by the head of the IES analytical laboratory. The Excel spreadsheets are then sent to Hudson River Research Reserve staff. Data are examined for completeness, consistency and outliers. Suspect data are flagged, data are reviewed at IES, and if possible, samples are analyzed a second time. For chlorophyll a and phaeophytin data, raw fluorescence data are entered by hand into spreadsheets that have been set up to perform necessary calculations. Entered data are checked twice for errors and calculated values are examined for completeness, consistency and outliers. Suspect data are flagged. All laboratory data are then assigned an ID and imported into an Access database. Field data are entered directly into Access with a corresponding sample ID. The field and laboratory data for the four sites described here are then queried out of Access, imported into Excel, reformatted and pre-processed with the NutrientRound.xls macro. The NutrientRound.xls macro was developed by the CDMO in order to prevent incorrect reporting of directly measured values, incorrect rounding of values, and incorrect reporting of calculated values. The macro formats data to a specified number of decimal places and utilizes banker’s rounding rules for rounding numbers. The data are then imported into EQWin and archived in a permanent database. The research assistant is responsible for QA/QC of the data. PROCESS DATE: 20060223

Access Constraints Data collected in conjunction with the National Estuarine Research Reserve System's (NERRS) System-wide Monitoring Program (SWMP) is considered public information. Please see site for further information: http://cdmo.baruch.sc.edu/aboutdata.htm

DISTRIBUTION LIABILITY: Distribution According to the Ocean and Coastal Resource Management Data Dissemination Policy for the ...

Use Constraints The principal investigator (PI) listed in the enclosed metadata retains the right to be fully credited for having collected and processed the data. Please see the site for further information: http://cdmo.baruch.sc.edu/aboutdata.htm

Ancillary Keywords

nutrient monitoring

National Estuarine Research Reserves

Data Set Progress

COMPLETE

Originating Center

Data Center

North Inlet-Winyah Bay Reserve, Baruch Marine Field Laboratory, Belle W. Baruch Institute for Marine and Coastal Sciences, University of South Carolina

Data Center URL: http://www.northinlet.sc.edu/

Data Center Personnel
Name: TAMMY D. SMALL Phone: (843) 546-6219 Fax: (843) 546-1632 Email: tammy at belle.baruch.sc.edu Contact Address: University of South Carolina Baruch Marine Field Laboratory P.O. Box 1630 City: Georgetown Province or State: South Carolina Postal Code: 29442 Country: USA