Chesapeake Bay Maryland (CBM) NERR Water Quality Metadata March 2002-December 2002 Latest Update: December 12, 2003
Entry ID:
CDMO_cbmwq03-12.02m
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Summary
Abstract:
Water quality monitoring is conducted at 26 National Estuarine Research Reserves (NERR)
at four locations within or adjacent to the reserve. The following parameters are collected at
least every 30 minutes: water temperature, specific conductivity, salinity, percent saturation,
dissolved oxygen concentration, water depth, pH and turbidity. All water quality data loggers
will be deployed from a known depth from the bottom at each site.
Purpose:
The purpose of the monitoring program at CBM NERR is to conform to the NERR SWMP monitoring program looking at trends in water quality over both temporal and spatial scales. Observed effects of water quality, habitats and living resources in the river channel site and the nearby emergent tidal fresh marshes are being studied using various comparative ... field sampling methods
with the backdrop of long term high resolution data from two representative fixed monitoring
sites. Water quality measurements were taken every 30 minutes from 19 March through 16 December
2002 at both the Patuxent River Park (PR) and Jug Bay Wetlands Sanctuary (JB) sites that conform
to seasonal measurements collected each year since 1995.
SUPPLEMENTAL INFORMATION:
Associated researchers and projects The Jug Bay Wetlands Sanctuary staff has been collecting weekly to
monthly temperature, salinity, dissolved oxygen, and nutrient samples at the same location as
the data logger at JB. Other remarks/notes
CURRENTNESS REFERENCE: Observed
SPATIAL DATA ORGANIZATION INFORMATION:
Indirect Spatial Reference: Site location and character The Chesapeake
Bay Maryland NERR has three components in Maryland's portion of Chesapeake Bay. Monie Bay is a
mesohaline region on the lower Eastern Shore; Otter Point Creek is a tidal freshwater river and
marsh system; and Jug Bay is part of the freshwater portion of the Patuxent River. Both data
loggers during 2002 were within the Jug Bay component. Patuxent River Park (PR) 38 deg 46' 23.5"
N, 76 deg 42' 32.5" W Site PR is located in the upper tidal headwaters of the Patuxent River,
Maryland. PR is along the mainstem of the Patuxent River, which is approximately 50m wide at
this point along the river. The PR site sits adjacent to a boat launch at Jackson Landing,
located on the Prince Georges County side of the river at Patuxent River Park. The actual sonde
was deployed horizontally in a retro-fitted crab pot and sits roughly .25m off the bottom
sediments. In October 2002, the sonde was placed vertically in a perforated PVC pipe for easier
access and protection. Sediments at the site are extremely fine and easily resuspended. Average
depth at this site is roughly 2 meters. Salinities at this site rarely exceed 1ppt. Because this
site is located along the main channel of the Patuxent River, water quality at this site
represents the general quality of water flowing along the main portion of the river. The
Patuxent River watershed is an increasingly urbanized watershed, however there are extensive
riparian buffers along the portion of the river that flows through the site. However, the PR
site is approximately 3km downstream of a large wastewater treatment plant that discharges
directly into the Western Branch tributary of the Patuxent River. The PR site is roughly 1.5km
downstream of the confluence of the Western Branch tributary and the Patuxent River mainstem.
The tidal range at this site is roughly 0.5m. Jug Bay (JB) 38 deg 46' 50.6" N, 76 deg 42' 29.1"
W Site JB is located in a shallow tidal creek adjacent to the Patuxent River. The site is
slightly upstream (roughly 0.3km) from the PR site but sits in a shallow creek that is tidally
infiltrated by a backwater marsh adjacent to the Patuxent River mainstem. At low tide, this
backwater marsh becomes a large mud flat with very little standing water. The creek ranges in
width between 2m to 5m at the site and average depth at the site is 0.75m. Because of the
shallow nature of this site, the sonde is periodically exposed at very low tides. Sediments at
this site are extremely fine and flocculant. The sonde is deployed horizontally in a
retro-fitted cage, similar to site PR. Because of the shallowness of the tidal creek, coupled
with the dramatic daily changes in the depth and width of the stream, deployments at this site
have presented some problems. These problems include periodic exposure of the sonde, very high
turbidity and sedimentation rates associated with tidal infiltration and resuspension, which
have caused severe fouling of the probes at this site. Water quality at the site represents
extreme shallow water habitats. Thus it is not uncommon to see very large fluctuations in
temperature and dissolved oxygen at this site ranging from complete anoxia to full saturation,
due in part to the shallow nature of the site and the effects of marsh processes on water
quality. Salinities at this site rarely exceed 1 ppt. Tidal range at this site is roughly 0.5m. 
Geographic Coverage
(Click for Interactive Map)
Spatial coordinates
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N: 39.45
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S: 38.19
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E: -75.79
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W: -76.71
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Data Set Citation
Dataset Originator/Creator:
Julie Bortz, Ned Burger, Janet Barnes
Dataset Title:
Chesapeake Bay Maryland (CBM) NERR Water Quality Metadata March 2002-December
2002 Latest Update: December 12, 2003
Dataset Release Date:
2006-02-08
Data Presentation Form:
Unknown
Other Citation Details:
NA
Online Resource:
http://cdmo.baruch.sc.edu/
Parent DIF
This data set description is a member of a collection. The
collection is described in
noaanosnerr_d_nerrparent
Temporal Coverage
Start Date:
2002-03-01
Stop Date:
2002-12-31
Quality
ATTRIBUTE ACCURACY REPORT: Anomalous/Suspect Data Any data outliers detected using CDMO
macros and any data deletions are detailed below. Suspect and outlier data were detected and
considered for deletion from the edited data using combination of methods, including graphics
and CDMO macros. All outliers are detailed below. Any data ... determined to be due to instrument
errors or malfunctions were retained in raw data. Missing data and any intended deletions from
edited data were replaced with a period (.) in accordance with CDMO QA/QC guidelines and
detailed below. According to the CDMO Operations Manual Version 3.0, depth measurements taken
with the non-vented level probe can be influenced by up to 0.39 m (1.3 ft) during some
low-pressure hurricane events. Specific dates and time ranges of potentially influenced data are
listed with each respective month. Jug Bay Sonde deployment at the Jug Bay site began 3/19/02 at
15:30:00. Positioning the muskrat trap that housed the sonde deployed adjacent to the weather
station dock was problematic due to limited total water depth in the marsh inlet. After the
first week of deployment, the sonde was observed out of the water on retrieval 25 March at low
tide (mean tide range 1.9 meter). Consequently, a pole was used in all subsequent deployments to
reposition the trap in the deepest point of the channel. Although the fresh tidal
characteristics of this site made detection of sonde exposure difficult, unusual coinciding
patterns in specific conductivity (*observations 0.01 detailed below), dissolved oxygen
and low depth measurements indicate that there were periodic observations throughout the year
during extremely low tides that the sonde was out of the water which affected all variables
measured, noted below. Typical patterns were resumed as tidal heights increased. Due to lack of
turbidity sensors on the YSI 6000 instruments, there were no turbidity observations at Jug Bay
from 3/19/2002 through 8/23/2002 10:30. The new YSI 6600 put into service at 11:00 on 8/23/2002
included a full suite of sensors which included turbidity. March 2002 Depth Outliers 03/23/2002
19:00:00 -0.01 03/24/2002 18:00:00 0.00 03/24/2002 18:30:00 -0.01 03/24/2002 19:00:00 -0.01
03/24/2002 19:30:00 -0.02 03/24/2002 20:00:00 -0.02 03/24/2002 20:30:00 -0.02 03/24/2002
21:00:00 -0.02 03/24/2002 21:30:00 -0.02 03/24/2002 22:00:00 -0.02 Sonde out of water for
modification of trap - All parameters are suspect and deleted 03/25/2002 15:30:00. April 2002 PH
missing from 04/03 17:30.00 through 04/19/02 17:00.00 Depth Outliers 04/01/2002 01:00:00 -0.02
04/01/2002 01:30:00 -0.04 04/01/2002 02:00:00 -0.05 04/01/2002 02:30:00 -0.05 04/01/2002
03:00:00 -0.05 04/01/2002 13:30:00 -0.01 04/01/2002 14:00:00 -0.01 04/01/2002 14:30:00 -0.02
04/01/2002 15:00:00 -0.02 04/01/2002 15:30:00 -0.03 04/01/2002 16:00:00 -0.03 04/01/2002
16:30:00 -0.01 04/29/2002 00:30:00 0.00 04/29/2002 01:00:00 -0.02 04/29/2002 01:30:00 -0.03
04/29/2002 02:00:00 -0.04 Specific Conductivity Anomalies* 04/03/2002 18:00:00 through 22:30:00
(000.01) May 2002 pH for the following dates and times were deleted due to probes possibly out
of water. 05/11/2002 13:00:00 05/14/2002 15:00:00 05/22/2002 07:30:00 through 09:00:00
05/25/2002 11:30:00 The lowest water levels of the 2002 field season were observed at low tides
from May 11 through May 15, which may have temporarily exposed sensors to air in at the shallow
Jug Bay site. Depth Outliers Specific Conductivity Anomalies* 05/13/2002 00:30:00 -0.01
05/13/2002 01:00:00 -0.01 05/13/2002 12:00:00 -0.02 05/13/2002 12:30:00 -0.02 05/13/2002
23:00:00 -0.02 05/13/2002 23:30:00 -0.04 05/14/2002 00:00:00 -0.05 05/14/2002 00:30:00 -0.06
05/14/2002 01:00:00 -0.07 05/14/2002 01:30:00 -0.07 05/14/2002 02:00:00 -0.07 05/14/2002
11:00:00 -0.03 05/14/2002 11:30:00 -0.05 05/14/2002 12:00:00 -0.06 05/14/2002 12:00:00 000.01
05/14/2002 12:30:00 -0.06 05/14/2002 12:30:00 000.01 05/14/2002 13:00:00 -0.07 05/14/2002
13:00:00 000.01 05/14/2002 13:30:00 -0.07 05/14/2002 13:30:00 000.00 05/14/2002 14:00:00 -0.07
05/14/2002 14:00:00 000.00 05/14/2002 14:30:00 -0.09 05/14/2002 14:30:00 000.00 05/14/2002
15:00:00 -0.09 05/14/2002 15:00:00 000.00 05/14/2002 15:30:00 -0.09 05/14/2002 15:30:00 000.00
05/14/2002 16:00:00 -0.11 05/14/2002 16:00:00 000.00 05/14/2002 23:00:00 000.01 05/14/2002
23:30:00 -0.02 05/14/2002 23:30:00 000.01 05/15/2002 00:00:00 -0.04 05/15/2002 00:00:00 000.01
05/15/2002 00:30:00 -0.05 05/15/2002 00:30:00 000.01 05/15/2002 01:00:00 -0.02 05/15/2002
01:00:00 000.01 05/15/2002 01:30:00 -0.03 05/15/2002 01:30:00 000.01 05/15/2002 02:00:00 0.00
05/15/2002 02:00:00 000.01 05/15/2002 02:30:00 -0.02 5/15/2002 02:30:00 000.01 05/15/2002
03:00:00 -0.01 05/15/2002 03:00:00 000.01 05/15/2002 11:30:00 000.01 05/19/2002 15:00:00 000.01
05/19/2002 15:30:00 000.00 05/19/2002 16:00:00 000.00 05/19/2002 16:30:00 000.00 05/19/2002
17:00:00 000.00 05/20/2002 16:30:00 000.01 05/20/2002 17:00:00 000.01 05/20/2002 17:30:00 000.01
05/20/2002 18:00:00 000.01 05/20/2002 18:30:00 000.01 05/20/2002 19:00:00 000.01 05/20/2002
19:30:00 000.01 05/21/2002 05:30:00 000.01 05/21/2002 06:00:00 000.01 05/21/2002 06:30:00 000.01
05/21/2002 07:00:00 000.01 05/21/2002 07:30:00 000.01 05/21/2002 18:00:00 000.01 05/21/2002
18:30:00 000.01 05/21/2002 19:00:00 000.01 05/21/2002 19:30:00 000.01 05/21/2002 20:00:00 000.01
05/21/2002 20:30:00 000.01 05/22/2002 06:30:00 000.01 05/22/2002 07:00:00 000.01 05/22/2002
07:30:00 000.01 05/22/2002 08:00:00 000.01 05/22/2002 08:30:00 000.01 05/22/2002 09:00:00 000.00
05/22/2002 09:30:00 000.00 05/22/2002 19:00:00 000.01 05/22/2002 19:30:00 000.01 05/22/2002
20:00:00 000.01 05/22/2002 20:30:00 000.01 05/22/2002 21:00:00 000.01 05/22/2002 21:30:00 000.01
05/23/2002 08:30:00 000.01 05/23/2002 09:00:00 000.01 05/23/2002 09:30:00 000.01 05/23/2002
10:00:00 000.01 June 2002 Depth Outliers 06/01/2002 16:00:00 -0.03 06/01/2002 16:30:00 -0.04
06/01/2002 17:00:00 -0.05 06/01/2002 17:30:00 -0.06 06/01/2002 18:00:00 -0.04 06/02/2002
04:30:00 -0.02 06/02/2002 17:00:00 0.00 06/02/2002 17:30:00 -0.01 06/02/2002 18:00:00 -0.01
06/02/2002 18:30:00 0.00 Negative DO suspect for the following dates and times dues to probe
likely being exposed to anoxic conditions and may have been poisoned resulting in negative DO
values. However, following the anoxic event, DO responds properly and values appear to be
accurate. Data retained. 06/03/2002 05:00:00 -000.5 06/03/2002 05:30:00 -000.4 06/03/2002
06:00:00 -000.7 06/03/2002 07:00:00 -000.2 06/03/2002 07:30:00 -000.4 06/06/2002 19:00:00 -001.5
06/06/2002 19:30:00 -001.2 06/06/2002 20:00:00 -001.1 06/06/2002 20:30:00 -001.0 06/06/2002
21:00:00 -001.0 06/06/2002 21:30:00 -001.3 06/06/2002 22:00:00 -001.1 06/06/2002 22:30:00 -001.0
06/06/2002 23:00:00 -000.9 06/07/2002 07:30:00 -001.1 06/07/2002 08:00:00 -000.9 06/07/2002
08:30:00 -001.1 06/07/2002 09:00:00 -001.0 06/07/2002 09:30:00 -000.8 06/07/2002 10:00:00 -000.8
06/07/2002 10:30:00 -000.8 06/07/2002 11:00:00 -000.7 06/07/2002 11:30:00 -000.7 06/07/2002
19:30:00 -000.1 06/07/2002 20:00:00 -000.1 06/07/2002 20:30:00 -000.1 06/07/2002 21:00:00 -000.7
06/07/2002 21:30:00 -000.8 06/07/2002 22:00:00 -001.1 06/09/2002 23:00:00 -000.4 06/09/2002
23:30:00 -000.6 06/10/2002 00:00:00 -000.5 06/10/2002 22:00:00 -001.0 06/10/2002 22:30:00 -001.1
06/10/2002 23:00:00 -001.1 06/10/2002 23:30:00 -001.1 06/11/2002 00:00:00 -001.1 06/11/2002
00:30:00 -001.0 06/11/2002 01:00:00 -000.3 06/12/2002 00:00:00 -001.2 06/12/2002 00:30:00 -001.1
06/12/2002 01:00:00 -000.7 July 2002 No anomalies to report. August 2002 No Turbidity recorded
until 08/23/02 11:00.00 when new instruments were deployed. Turbidity Outliers 08/28/2002
20:00:00 1296 08/28/2002 21:00:00 1289 08/29/2002 03:30:00 1276 08/29/2002 05:30:00 1276
08/29/2002 11:30:00 1287 08/29/2002 22:00:00 1298 08/30/2002 05:30:00 1280 September 2002 All
data deleted 09/05/2002 12:00:00 due to datalogger being out of water. Turbidity Outliers
09/23/2002 18:00:00 1159 09/25/2002 02:00:00 1404 09/26/2002 00:30:00 1192 09/26/2002 12:00:00
1048 09/26/2002 14:30:00 1122 09/26/2002 16:30:00 1067 09/27/2002 02:00:00 1414 09/29/2002
09:30:00 1495 09/29/2002 11:00:00 1557 09/29/2002 17:30:00 1575 09/30/2002 02:30:00 1545
09/30/2002 05:30:00 1521 October 2002 Turbidity Outliers 10/13/2002 14:30:00 1318 10/13/2002
22:00:00 1059 10/14/2002 17:00:00 1758 10/14/2002 18:30:00 1679 10/14/2002 19:00:00 1456
10/14/2002 23:30:00 1230 10/17/2002 06:00:00 1689 10/17/2002 15:00:00 1727 10/17/2002 16:30:00
1719 10/19/2002 01:00:00 1145 10/21/2002 04:00:00 1692 10/21/2002 05:30:00 1691 10/21/2002
08:00:00 1676 10/21/2002 11:00:00 1686 10/21/2002 12:30:00 1660 10/21/2002 13:30:00 1725
10/21/2002 14:00:00 1432 10/21/2002 16:00:00 1280 10/21/2002 17:30:00 1731 10/21/2002 23:30:00
1521 10/22/2002 10:30:00 1626 10/22/2002 13:00:00 1684 10/22/2002 14:30:00 1748 10/22/2002
20:00:00 1718 10/22/2002 23:30:00 1368 10/23/2002 05:00:00 1330 10/23/2002 13:00:00 1408
10/23/2002 14:30:00 1062 10/23/2002 20:00:00 1242 10/23/2002 22:30:00 1244 10/24/2002 05:30:00
1266 10/24/2002 06:30:00 1050 10/24/2002 07:30:00 1681 10/24/2002 11:00:00 1361 10/24/2002
12:00:00 1061 10/24/2002 13:00:00 1679 10/24/2002 14:30:00 1167 10/24/2002 15:30:00 1544
10/24/2002 16:30:00 1080 10/24/2002 18:00:00 1021 10/24/2002 20:00:00 1105 10/24/2002 21:00:00
1054 10/24/2002 22:00:00 1323 10/24/2002 23:30:00 1296 10/25/2002 00:00:00 1104 10/25/2002
01:30:00 1583 10/25/2002 03:30:00 1635 10/25/2002 05:00:00 1645 10/25/2002 05:30:00 1620
10/25/2002 07:00:00 1658 10/25/2002 08:30:00 1655 10/25/2002 09:00:00 1649 10/25/2002 09:30:00
1652 10/25/2002 10:30:00 1184 10/25/2002 11:30:00 1282 10/25/2002 13:00:00 1610 10/25/2002
15:00:00 1616 10/25/2002 16:30:00 1320 10/25/2002 17:00:00 1681 November 2002 Turbidity Outliers
11/27/2002 18:30:00 2022 11/30/2002 02:00:00 1007 December 2002 No problems noted in December.
Deployment for this site for 2002 ended December 16 @ 17:30:00. Patuxent River Park The sonde
was deployed at the Patuxent River Park site beginning 3/19/02 at 17:00:00 adjacent to the
floating dock used by Park staff. The YSI 6000 instrument was fastened horizontally inside a
weighted crab pot with sensors positioned 6 inches above the bottom sediments in 5 feet of water
(MLW). This deployment method was replaced on 27 October 2002 with a protective PVC pipe
enclosure affixed vertically to the dock piling for protection and security. The 4-inch diameter
stand-pipe enclosure was abundantly perforated with 5.1 cm diameter holes to allow water to
circulate freely, followed by dewaxing and applications of underwater bonding and ablative anti-
fouling paint to resist marine biofouling. Only one of the two YSI 6000 instruments deployed at
the Patuxent River Park site was equipped with a turbidity sensor, therefore turbidity
measurements were present on alternating deployments from 3/19/2002 through 8/23/2002 at 09:30.
The new YSI 6600's put into service at 10:00 on 8/23/2002 included a full suite of sensors which
included turbidity. March Turbidity Outliers 03/23/2002 08:00:00 1342 03/30/2002 18:00:00 1371
April 2002 Turbidity Missing 04/03/02 18:30:00 to 04/19/02 18:00:00 May 2002 Turbidity Outlier
05/17/2002 15:30:00 1160 Turbidity Missing 05/03/02 17:00:00 to 05/15/02 09:00:00 05/29/02
09:30:00 to 05/31/02 23:30:00 pH was deleted 05/03 17:00:00 to 05/15 09:00:00 due to probe
failure. June 2002 Turbidity Outliers 06/23/2002 03:00:00 1439 06/23/2002 14:00:00 1073
06/23/2002 14:30:00 1400 06/23/2002 15:00:00 1122 06/23/2002 15:30:00 1446 06/23/2002 21:00:00
1421 06/23/2002 21:30:00 1033 06/23/2002 22:00:00 1393 06/23/2002 23:00:00 1441 06/24/2002
00:00:00 1443 06/24/2002 07:30:00 1447 06/24/2002 16:00:00 1430 06/25/2002 15:00:00 1456
06/26/2002 01:00:00 1032 06/26/2002 18:30:00 1459 06/27/2002 09:30:00 1456 06/27/2002 10:00:00
1449 06/27/2002 23:30:00 1041 06/28/2002 02:00:00 1082 Turbidity Missing 06/01/02 00:00:00 to
06/12/02 11:30:00 Turbidity Missing 06/28/02 09:30:00 to 06/30/02 23:30:00 Internal Error:
missing data, possible intermittent power failure, sonde returned to YSI for repair 06/02/02
02:30 06/02/02 14:30 06/02/02 15:00 06/04/02 02:00 06/05/02 19:00 06/28/02 12:30 06/28/02 15:00
06/28/02 16:30 to 06/28/02 20:30 06/29/02 02:30 06/29/02 06:30 06/29/02 12:30 06/29/02 13:00
06/29/02 14:30 06/29/02 17:30 to 06/29/02 19:30 06/29/02 21:30 to 06/29/02 22:30 06/30/02 00:30
06/30/02 09:30 06/30/02 14:30 06/30/02 16:00 06/30/02 17:30 06/30/02 18:30 06/30/02 21:30
06/30/02 23:00 06/30/02 23:30 July 2002 Depth Outliers - depth only removed 07/02/2002 16:30:00
3.97 07/02/2002 17:00:00 3.92 07/02/2002 17:30:00 4.09 07/02/2002 18:00:00 4.04 07/02/2002
18:30:00 3.91 07/02/2002 19:00:00 4.06 07/02/2002 19:30:00 3.91 07/02/2002 20:00:00 3.61
Turbidity Outliers 07/09/2002 12:00:00 1107 07/12/2002 11:00:00 1459 Internal Error: missing
data, possible intermittent power failure, sonde returned to YSI for repair 07/01/02 00:00 to
07/01/02 02:00 07/01/02 05:00 07/01/02 12:00 to 07/01/02 13:00 07/01/02 14:00 07/01/02 17:30
07/01/02 04:30 07/01/02 21:30 to 07/01/02 22:30 07/02/02 00:00 07/02/02 10:30 07/02/02 12:00
07/02/02 13:30 07/02/02 15:00 to 07/02/02 16:00 07/02/02 20:30 to 07/02/02 21:30 07/02/02 22:30
to 07/03/02 03:00 07/03/02 07:00 07/03/02 07:30 07/03/02 09:00 to 07/09/02 09:30 07/18/02 18:30
Turbidity Missing 07/01/02 00:00:00 to 07/09/02 09:30:00 Turbidity Missing 07/18/02 19:00:00 to
07/31/02 23:30:00 August 2002 Turbidity Outliers 08/03/2002 10:00:00 2431 08/05/2002 05:00:00
2431 08/05/2002 10:30:00 2417 08/14/2002 11:30:00 1201 08/16/2002 08:30:00 1196 08/25/2002
19:30:00 1159 08/28/2002 17:00:00 1124 Factory upgraded YSI 6000 without depth sensor used on
alternating deployments Depth Missing 08/01/02 12:30:00 to 08/07/02 09:00:00 Depth Missing
08/13/02 09:30:00 to 08/23/02 09:30:00 Turbidity Missing 08/01/02 00:00:00 to 08/01/02 12:00:00
Turbidity Missing 08/07/02 09:30:00 to 08/13/02 09:00:00 DO data deleted for the following dates
and times due to punctured membrane. 08/11/2002 07:00:00 to 08/13/2002 09:00:00 All DO data
suspect for deployment 08/13/02 through 08/23/02 due to small hole found in membrane during
maintenance of sonde. September 2002 DO concentration and DO charge appeared abnormal, tear
observed in membrane DO deleted 09/11/02 11:30:00 to 09/12/02 11:30:00 DO deleted 09/24/02
18:30:00 to 10/01/02 10:30:00 Turbidity Outliers 09/03/2002 22:30:00 1215 09/19/2002 10:30:00
1025 09/19/2002 14:00:00 1308 09/20/2002 08:30:00 1301 09/25/2002 17:30:00 1083 09/26/2002
07:00:00 1244 09/28/2002 19:00:00 1253 09/28/2002 20:30:00 1058 09/28/2002 22:30:00 1178
09/29/2002 01:30:00 1273 09/29/2002 19:00:00 1282 09/30/2002 05:00:00 1251 09/30/2002 06:30:00
1266 09/30/2002 09:30:00 1260 09/30/2002 15:30:00 1282 October 2002 DO concentration and DO
charge appeared abnormal, tear observed in membrane DO deleted 09/24/02 18:30:00 to 10/01/02
10:30:00 November 2002 No problems noted December 2002 Depth Outliers 12/01/2002 08:00:00 -0.05
12/01/2002 08:30:00 -0.04 12/01/2002 09:00:00 -0.04 12/01/2002 09:30:00 -0.03 Depth appeared
abnormal, all other parameters appear normal Depth deleted 12/03/02 11:00:00 to 12/03/02
13:30:00 Depth deleted 12/03/02 21:00:00 to 12/04/02 00:00:00 Deployment Ended for season - no
data after 12/16/02 17:00:00 All Data missing 12/16/02 17:30:00 to 12/31/02 23:30:00 Post
deployment information End of deployment Post-calibration Readings in Standard Solutions: na =
no data available for that particular standard JB: Date SpCond DO pH Turb Depth ms/cm Air Sat
NTU m ` Std:1 Std: 100% Std:7.0 Std: 0.0 Std:0.000 04/04/02 0.014 97 7.03 na -0.045 04/20/02
0.000 80 na na -0.400 05/04/02 0.973 99 7.20 na 0.124 05/15/02 0.960 89 7.07 na 0.089 05/29/02
0.976 100 7.20 na 0.050 06/12/02 0.980 100 7.03 na -0.125 06/28/02 0.976 96 7.16 na 0.010
06/28/02 0.963 100 7.23 -1.0 0.014 07/09/02 0.970 78 5.37 na 0.020 07/19/02 1.005 100 7.15 3.1
-0.071 08/01/02 1.010 95 7.21 na 0.122 08/07/02 0.997 99 7.06 3.3 na 08/13/02 0.990 78 7.03 na
0.000 08/23/02 1.041 121 7.10 na na 08/30/02 1.005 100 7.07 2.3 0.051 09/05/02 0.994 102 7.14
2.0 -0.070 09/12/02 na 5* 7.10 -0.4 -0.008 10/01/02 na 29* na na na 10/25/02 na 114 na na na
11/14/02 na 114 na na na 12/16/02 na 117 na na na * = DO membrane torn PRP: Date SpCond DO pH
Turb Depth ms/cm Air Sat NTU m ` Std:1 Std: 100% Std:7.0 Std: 0.0 Std:0.000 04/04/02 0.955 101
7.10 0.4 -0.045 04/20/02 na na na na na 05/04/02 0.951 101 7.10 0.4 0.112 05/15/02 0.970 101 na
na 0.061 05/29/02 0.980 99 7.20 6.0 0.061 06/12/02 0.990 95 6.98 na -0.154 06/28/02 0.980 99
7.05 na 0.023 07/08/02 0.974 98 7.04 na -0.074 07/19/02 0.974 98 7.04 na -0.074 08/01/02 1.020
104 6.98 na -0.091 08/07/02 0.986 98 7.05 na 0.042 08/13/02 0.990 99 7.00 na -0.015 08/23/02
0.997 98 7.10 na -0.042 08/30/02 1.011 100 7.03 2.3 0.101 09/05/02 1.007 102 7.01 6.0 -0.068
09/12/02 na 101 7.14 -0.8 -0.006 10/01/02 na 112 na na na 10/25/02 na 110 na na na 11/14/02 na
128 na na na 12/16/02 na 115 na na na LOGICAL CONSISTENCY REPORT: NACOMPLETENESS REPORT: Data
collection period Data collection using sondes at Jug Bay Wetlands Sanctuary (JB) and Patuxent
River Park (PR) did not begin until March 19, 2002 and continued through December 16, 2002.
Because instruments can be trapped and damaged by ice formation in the lower salinity and upper
Chesapeake Bay tributaries, which occurs periodically from November through March, deployments
have been limited to ice-free months, therefore data is not available for January and February
2002 due to ice cover. Datalogger deployments: BEGAN ENDED JB Jug Bay Site 03/19/02 15:30:00
04/03/02 17:00:00 04/03/02 17:30:00 04/19/02 17:00:00 04/19/02 17:30:00 05/03/02 17:30:00
05/03/02 18:00:00 05/15/02 11:30:00 05/15/02 12:00:00 05/29/02 10:30:00 05/29/02 11:00:00
06/12/02 12:30:00 06/12/02 13:00:00 06/28/02 10:00:00 06/28/02 10:30:00 07/09/02 10:30:00
07/09/02 11:00:00 07/18/02 19:30:00 07/18/02 20:00:00 08/01/02 13:00:00 08/01/02 13:30:00
08/07/02 10:00:00 08/07/02 10:30:00 08/13/02 10:00:00 08/13/02 10:30:00 08/23/02 10:30:00
08/23/02 11:00:00 08/30/02 10:30:00 08/30/02 11:00:00 09/05/02 11:30:00 09/05/02 12:30:00
09/12/02 12:30:00 09/12/02 13:00:00 10/01/02 13:30:00 10/01/02 14:00:00 10/25/02 18:00:00
10/25/02 18:30:00 11/14/02 13:00:00 11/14/02 13:30:00 12/16/02 17:30:00 PR Patuxent River Park
(Jackson Landing) 03/19/02 17:00:00 04/03/02 18:00:00 04/03/02 18:30:00 04/19/02 18:00:00
04/19/02 18:30:00 05/03/02 16:30:00 05/03/02 17:00:00 05/15/02 09:00:00 05/15/02 09:30:00
05/29/02 09:00:00 05/29/02 09:30:00 06/12/02 11:30:00 06/12/02 12:00:00 06/28/02 09:00:00
06/28/02 09:30:00 07/09/02 09:30:00 07/09/02 10:00:00 07/18/02 18:00:00 07/18/02 19:00:00
08/01/02 12:00:00 08/01/02 12:30:00 08/07/02 09:00:00 08/07/02 09:30:00 08/13/02 09:00:00
08/13/02 09:30:00 08/23/02 09:30:00 08/23/02 10:00:00 08/30/02 09:30:00 08/30/02 10:00:00
09/05/02 11:00:00 09/05/02 11:30:00 09/12/02 11:30:00 09/12/02 12:00:00 10/01/02 10:30:00
10/01/02 11:00:00 10/25/02 17:00:00 10/25/02 17:30:00 11/14/02 15:00:00 11/14/02 15:30:00
12/16/02 17:00:00 Deleted Data Missing Data Missing data are denoted by a period in the data
set. Data are missing due to equipment failure where no probes were deployed,
maintenance/calibration of equipment, elimination of obvious outliers or elimination of data due
to calibration problems (both pre and post). For more details on deleted data, see the Data
Anomalies Section. To find out more details about missing data, contact the Research Coordinator
at the site submitting the data. Jug Bay Due to lack of turbidity sensors on the YSI 6000
instruments, there were no turbidity observations at Jug Bay from 3/19/2002 through 8/23/2002
10:30. The new YSI 6600 put into service at 11:00 on 8/23/2002 included a full suite of sensors
which included turbidity. Patuxent River Park Only one of the two YSI 6000 instruments deployed
at the Patuxent River Park site was equipped with a turbidity sensor, therefore turbidity
measurements were present on alternating deployments from 3/19/2002 through 8/23/2002 at 09:30.
The new YSI 6600's put into service at 10:00 on 8/23/2002 included a full suite of sensors which
included turbidity. LINEAGE/PROCESS STEP: PROCESS DESCRIPTION: Additional Description: Entry
verification Raw data were uploaded from the YSI 6000UPG and YSI 6600 data loggers to a PC,
graphs were produced and data were visually examined after each deployment using the EcoWatch
software. Data files were then exported from the EcoWatch format into Excel (for Windows 2000)
files, where the headers, footers, and inappropriate spaces were removed. Raw data was archived,
plotted and suspect data (outliers) or trends noted initially to verify accurate instrument
operation for service as needed prior to redeployment. Janet Barnes and Ned Burger were
responsible for these tasks. Data from each deployment was processed initially using macros in
the CDMO cdmomac3.xls program. Steps in the program include procedures which allow users to
automatically format column widths to the correct number of decimal places based on YSI sensor
specifications. It also allows users to QA/QC each data logger generated file for missing data
points, fill all cells that do not contain data with periods, and find all data points that fall
outside the range of what the data logger is designed to measure (outliers). The CDMO import.xls
macro allows PC users with 30-minute data to automatically create a monthly Excel file from a
two-week deployment and insert periods for missing data. In addition, in November 1999 a
graphing capability was added to this macro allowing users to produce single parameter and
missing data point graphs on a monthly basis. Raw data from successive deployments were merged
using the CDMO import.xls macros to produce monthly files. Resulting monthly Excel files at each
site (eg. JB0302.xls) consist of continuous data for all variables measured, with a period (.)
to denote any missing data. At this point, these data have not been modified except for
replacement of missing entries with a period. Data were then processed using the CDMO
cdmomac3.xls macros as an initial step in QA/QC procedures to identify outliers, defined simply
as values outside the respective sensor specifications. Results are retained as monthly Excel
files for each site (eg. JB0302outliers.xls). The final data processing involved identification
and documentation of data points judged to be anomalous (suspect) or erroneous due to extreme
natural events or equipment malfunctions using various procedures including recommendations from
CDMO Operations Manual Appendix B, YSI 6000 Data Review and Editing Protocol. Anomalous data
were retained in cases where no definite reason for deletion was found. Periods during which
data were found to result from equipment malfunctions, failure, tampering or exposure to air by
low tides were identified, times with causes or related observations documented below and
respective data removed or deleted. These resulting edited data and documentation (metadata)
were archived, formatted in comma delimited file format and submitted to the CDMO for further
QA/QC. Ned Burger was responsible for these tasks. PROCESS DATE: 20060208
Access Constraints
The following citation should be included in any use of the data from
the LTER Palmer archive: "Data from the Palmer LTER data archive were
supported by Office of Polar Programs, NSF (OPP-96-32763)".
Use Constraints
"Data from the Palmer LTER data archive were supported by Office of
Polar Programs, NSF (OPP-96-32763)". Additionally, specific
investigators might be cited for their contribution of data or to the
paper. Users of the data accept responsibility to provide a copy of
publications using the data to: LTER Palmer Data Management,c/o
Dr. Raymond Smith, ICESS, UCSB, Santa Barbara, CA 93106)"
Distribution
Distribution Media:
online ftp, www
Fees:
None
Personnel
Role:
INVESTIGATOR
Phone:
(805) 893-4709
Fax:
(805) 893-2578
Email:
ray at icess.ucsb.edu
Contact Address:
Institute for Computational Earth System Science (ICESS)
University of California, Santa Barbara (UCSB)
6812 Ellison Hall
City:
Santa Barbara
Province or State:
California
Postal Code:
93106
Country:
USA
Role:
INVESTIGATOR
Phone:
(805) 893-2096
Fax:
(805) 893-8062
Email:
langdon at icess.ucsb.edu
Contact Address:
Marine Science Institute
University of California, Santa Barbara (UCSB)
City:
Santa Barbara
Province or State:
California
Postal Code:
93106
Country:
USA
Publications/References
Lascara C.M., L.B. Quetin and R.M. Ross, 1993. Palmer LTER: Krill Distribution and Biomass within Coastal Waters Near Palmer Station. Antarctic Journal of the United States 28(5): 214-217.
Lascara C.M., E.E. Hofmann, R.M. Ross, and L.B. Quetin, 1993. Palmer
LTER: Overview of Krill Acoustic Studies and Results from the
Antarctic Peninsula Grid. Antarctic Journal of the United States
28(5):212-214.
Lascara C.M., R.C. Smith, D. Menzies, K.S. Baker: Oceanographic data
collected aboard RV Polar Duke January-February 1993. CCPO Technical
Report No. 93-02, Crittenton Hall, Old Dominion University, Norfolk,
VA 23529. 1993. SIO Reference No. 93-41.
Lascara C.M., R.C. Smith, D. Menzies: XBT Data Collected Aboard RV
Polar Duke January-February 1993. CCPO Technical Report No. 93-03,
Crittenton Hall, Old Dominion University, Norfolk, VA 23529. 1993.
SIO Reference No. 93-42.
Creation and Review Dates
DIF Creation Date:
2002-02-25
Last DIF Revision Date:
2002-02-25
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