Napp, Jeffrey
Unpublished material
Chlorophyll
Microsoft Excel 2003 Spreadsheet
These data were collected under NSF Grant # ARC-0722448 ("BEST: Impacts of Sea-ice on the Hydrographic Structure, Nutrients, and Mesozooplankton over the Eastern Bering Sea Shelf") to Dr. G.L. Hunt, Jr., University of Washington.
The eastern Bering Sea shelf supports productive marine ecosystems with
extraordinarily valuable fisheries and subsistence resources, but sub-arctic seas are
predicted to be one of the regions most sensitive to future warming of the world’s oceans. Some of the most direct effects of changing climate will be on the extent, duration and timing of sea-ice over the Bering Sea shelf. Sea-ice controls the timing of the spring phytoplankton bloom, the fate of primary production, water column temperature and salinity, and provides a haul out and molting platform for marine mammals. Thus, the
most urgent priority of the Bering Sea Ecosystem Study (BEST) is to examine the role of
changing sea-ice conditions on the chemical, physical, and biological characteristics of
the ecosystem. The first BEST cruise was scheduled on the USCG Healy in April-May
2007, however, physical observations, water column nutrient chemistry, and zooplankton
distribution / abundance were not among the ecosystem components funded in the first
call for proposals. Project ARC-0722448 funded by NSF after the first call for BEST proposals filled this gap in chlorophyll collections until the remainder of BEST projects could be assembled in 2008.
To document the along- and cross-shelf variability in spring chlorophyll concentrations on the eastern Bering Sea shelf
20070410
20070512
ground condition
None planned
-180.0
-160.0
65.0000
54.0000
biota
phytoplankton
chlorophyll
phaeopigments
oceans
phytoplankton
chlorophyll
phaeopigments
None
Alaska
arctic
eastern Bering Sea shelf
Bristol Bay
St. Lawrence Island
Depths
upper water column
Seasons
Spring
None
None
Napp, Jeffrey
National Oceanic and Atmospheric Administration
mailing and physical
7600 Sand Point Way NE, Bldg. 4
Seattle
WA
98115
USA
(206) 526-4148
(206) 526-6723
jeff.napp@noaa.gov
not applicable
Data are processed using Seabird...
Field
Samples are from assorted size and types of PVC water bottles on a CTD rosette or carrousel and closed at a known depth. Water is drained from the bottles through a silicon tube into a calibrated PE or PP sample bottle. The bottom is rinsed three times and then filled to the top. After all sample bottles are filled, they are taken to the ship's laboratory where the contents are filtered through a glass fiber filter (nominal pore size 0.7 micron) over low vacuum (<= 7 psi). The filter is folded twice and placed in a 2 ml microcentrifuge tube. The tubes are store in the dark at - 80 deg. C until sample analysis.
Lab
Pigments are extracted in the dark at - 80 deg C in 6 ml of 90% acetone for 24 hours. They are then removed from the freezer, vortexed, and centrifuged for 5 minutes at 2,000 rpm. The samples are allowed to come to room temperature before measuring their fluorescence before and after the addition of HCl using a calibrated TD-700 fluorometer. Chlorophyll a and phaeopigments are calculated using standard equations.
No process steps have been described for this data set
Unknown
Point
Local surface
1.00
meters
Attribute values
HLY0701_Chlorophyl_final
Phytoplankton pigments (chlorophyll and phaeopigment) from water bottle samples
Napp, Jeffrey
FOCICruise
FOCI Program Cruise Number XYYZZ(X=sequential cruise number; YY= ship designation; ZZ= year)
See entity type definition source
Text
Station
Sequential Station Number
See entity type definition source
Integer
Haul
Sequential Haul Number (N.B. Increment haul number if the operation is performed within 0.5 nm of original station position)
See entity type definition source
Integer
GearAbrv
Gear Abbreviation
See entity type definition source
CTDB
Conductivity, Temperature, Depth Instrument with Water Bottles
See entity type definition source
ShipCruise
Ship's Convention for Cruise Name
See entity type definition source
Text
CTDID
CTD cast # from which chlorophyll samples were obtained. Concatenated variable: FOCI Cruise + Sequential Station Number + "CTD" + Sequential CTD #
See entity type definition source
Text
GMTTime
Greenwich Mean Time
See entity type definition source
1899-12-30 00-13-00
1899-12-30 23-26-00
Time
Date/Time
BottomDepth
Depth of Water Column (acoustically determined)
See entity type definition source
Integer
Latitude
Latitude (Decimal Degrees)
See entity type definition source
54.2438
62.8528
0.0001
Real
Longitude
Longitude (Decimal Degrees)
See entity type definition source
-179.4392
-163.9237
0.0001
Real
HaulComments
Comments Entered By Scientist
See entity type definition source
Text
Performance
Scientists Assessment of Sample Quality
See entity type definition source
good
no reservations about quality of sample
See entity type definition source
quest
questionable - some reservations about quality of sample; read Haul Comments to learn why
See entity type definition source
fail
failure during sample collection or processing - do not use these data
See entity type definition source
GMTDate
Greenwich Mean Time Date at Time of Sample Collection
See entity type definition source
2007-04-10 00-00-00
2007-05-12 00-00-00
Time
Date/Time
SampleDepth
Depth of Sample Collection
See entity type definition source
Integer
ChloroPerM^3
Chlorophyll a Concentration
See entity type definition source
0.0
35.4606
Micrograms per Cubic Meter
Real
PhaeoPigPerM^3
Phaeophorbide + Phaephytin Concentration
See entity type definition source
0.0
11.8799
Micrograms per Cubic Meter
Real
20081212
Napp, Jeffrey
National Oceanic and Atmospheric Administration
mailing and physical
7600 Sand Point Way NE
Seattle
WA
98115
USA
206-526-4148
FGDC Biological Data Profile of the Content Standard for Digital Geospatial Metadata
FGDC-STD-001.1-1999
National Center for Atmospheric Research
Earth Observing Laboratory
mailing and physical
3450 Mitchell Lane
Boulder
CO
80301
USA
303-497-8154
codiac@ucar.edu
stott@ucar.edu