July 2002 Workshop Report

July 2002 COAST Workshop Agenda
July 2002 Workshop Report

July 2002 Workshop Report:

COAST Workshop Agenda
July 18-19, 2002
Burt 193 Seminar Room
COAS, OSU, Corvallis, OR

**18 July (Thursday)**
________________
8:30-8:50	Introduction and Overview -- goals of workshop -- upcoming meetings -- 2003 plans	Jack Barth

8:50-9:00	Review CoOP and COAST objectives and hypotheses	Pat Wheeler

9:00	Begin summaries of COAST research

9:00-9:40	Moored Observations
9:00-9:20	--physical and meteorological	Murray Levine
9:20-9:25	--air temperature	Roger Samelson
9:25-9:30	--chlorophyll fluorescence	Tim Cowles
9:30-9:35	--spectral radiometers	Ricardo Letelier
9:35-9:40	--light backscatter	Zanna Chase

9:40-10:00	Land-Based Coastal Radar Observations	Mike Kosro

10:00-10:30	Aircraft Observations	John Bane

10:30	Coffee break

11:00	Survey Observations
11:00-11:20	--T, S, chlorophyll, velocity, mixing	Jack Barth
11:20-11:30	--bioacoustics	Steve Pierce
11:30-11:45	--bio-optics	Tim Cowles
11:45-11:55	--iron	Zanna Chase
11:55-12:00	--nutrients, pCO2	Burke Hales

noon	Lunch on your own (small groups to Monroe Street eateries)
1:00	COAST research summaries continued

1:00-1:20	Zooplankton Observations	Bill Peterson

1:20	Vertical Transect Observations
1:20-1:40	--turbulence, velocity, hydro	Alexander Perlin
1:40-2:00	--nutrients, pCO2	Burke Hales
2:00-2:20	--bio-optics	Tim Cowles
2:20-2:40	--particulate and dissolved organic material	Pat Wheeler
2:40-3:00	--phosphate	Kathleen Ruttenberg

3:00	Coffee break

3:30-3:50	--phytoplankton physiology and pigments	Ricardo Letelier

3:50	Modeling
3:50-4:05	--atmospheric	Natalie Perlin
4:05-4:25	--physical	Jianping Gan
4:25-4:45	--ecosystem	Yvette Spitz

4:45	Announce Group Topics and Charge to Groups: define objectives; list critical data sets (when available?); identify lead investigators; tentative titles	Barth/Wheeler

5:00pm	Adjourn

**19 July (Friday)**
________________
8:30-8:45	COAST organizational topics	Barth

8:45-9:00	3D circulation off Oregon	Allen

9:00-9:30	Discuss Group Topics Charge to Groups: -- define objectives -- list critical data sets (when available?) -- identify lead investigators -- tentative titles	Barth/Wheeler

9:30-10:30	Large Working Groups on Science Themes Example Themes (these can be modified or added to): --Upwelling on the "simple topography" Cascade Head Line --Surface layer cross-shelf transport (Ekman dynamics) (Bill P: this is where most of the organisms are found) --BBL cross-shelf transport --Flow-topography interactions and cross-shelf transport --Heceta Bank bottom cold pool (source? chemistry? biology?) --Heceta Bank high productivity "pool" (very high upper layer biomass) --Atmospheric changes caused by oceanic processes --Summertime downwelling --Surface heat flux

10:30	Coffee break

11:00-12:00	Large Working Groups on Science Themes continued

noon	Lunch on your own

1:00-1:30	Discussion of bottom water properties (BBL motion; source of Heceta Bank cold bottom pool, biology and chemistry in near-bottom waters). Include surface, highly productive Heceta Bank pool.

1:30-3:00	Small Working Groups on Data Integration etc. Examples (these can be modified or added to): --calibration of chlorophyll fluorescence (all) --aircraft surface color and in water optics (Bane, Haines, Meaux, Cowles, Letelier, Barth, others?) --ISUS nutrients versus surface and pumped profiler nutrients (Chase, Barth, Hales, Hubbard, Covert, Bandstra) --moored light backscatter (Chase, Cowles, Letelier, mooring group?) --turbulence and mesoscale features and bottom toporgraphic features (Perlin, Moum, Ott, Barth, modelers?) --turbulent chemical vertical fluxes (Hales, Covert, Bandstra, Moum, Perlin, others?) --biological/chemical/physical time series measurements (Cowles, Letelier, Hales, Wheeler, Perlin, Moum) --undercurrent observations (Perlin, Barth, Pierce, Kosro, Hales, Choboter)

3:00pm	Wrap-up

3:15pm	Adjourn

COAST Workshop Report
July 18-19, 2002
COAS, OSU, Corvallis, OR

The COAST CoOP group held a science workshop from 18-19 July 2002 in the
new Burt IV conference room at COAS (see Photo1, Photo2, Photo3). We made
full use of the new computer display capabilities, alternating between web site
tours and powerpoint presentations. About 35 people were in attendance,
including research groups from the University of North Carolina (aircraft
component) and Monterey Bay Aquarium Research Institute (iron measurements).
The first day involved 20-30' updates from each research group on their
progress since the 2001 intensive field year. On the second day we
met as a group to outline major near-term research objectives and then split
into smaller groups to facilitate data comparisons etc.

Jack Barth opened the workshop by reviewing the goals of the workshop and
reminding COASTers about upcoming EPOC (25-28 Sept, 24 July abstract and
registration deadline) and Fall AGU (6-10 Dec, 5 Sep abstract deadline) special
sessions on cross-shelf transport. He also went over tentative plans for the
Jan-Feb 2003 downwelling experiment. COAST had given input to the UNOLS ship
schedulers who met on 17 July to draft research vessel schedules. The
tentative vessels identified for the 2003 work are Wecoma and Roger Revelle.
Once the draft 2003 schedules are made public, they will be distributed to
COASTers and we will begin our intensive planning.

Pat Wheeler then reviewed the overall CoOP goal and the specific hypotheses of
the COAST project. This helped place our discussions in the context of our
long-term goals.

On the second day as we began discussion of immediate scientific objectives
by paraphrasing the COAST goal.

COAST Overall Goal: 3D wind-driven ecosystem response in a region of variable
topography: relatively simple in the north (Cascade Head) and more complex
in the south (Heceta Bank, Cape Perpetua)

Science Objectives (Processes/Data)
-----------------------------------

Surface cross-shelf transport and its influence on biomass distribution (e.g. chlorophyll):
Comparison between N (Ekman flow & air-sea fluxes) and S (also jet separation)
1. 1. Times during cruises for focussing on this objective:
  Northern line -- 18-28 May, 7-12 Aug
  Southern line -- 28-31 May, 12-25 Aug
2. 2. Data Description (immediate goal is to document the spatial/temporal
  sampling resolution and locations, and to determine when data are
  fully processed and calibrated and available for use)
  
  Surface transport [ML,PMK,TB] [initials indicate people involved]
  - moorings
  - radar
  - wind products
  - shipboard ADCP
  - model (u,v)
  Underwater light field E(x,z,t) [TJC,RL]
  - SeaSoar PAR
  - shipboard PAR
  - SuperSucker PAR
  - moored radiometers
  - moored Q
  - HMSC PAR
  Hydro (x,z,t) [JAB,AP,BH]
  - moored T,S
  - shipboard T,S
    - flow-through
    - SeaSoar
    - Chameleon
    - SuperSucker
    - CTDs
  - aircraft
    - AXBT
    - SST
  - satellite SST
  Chemistry [BH,ZC]
  - nutrients
  - pCO2
  - O2
  - Fe
  Biology [PAW,TJC,RL]
  - moorings
    - fluorescence
    - spectral radiometers
    - backscatter
  - flow-through
    - fluorescence
    - absorption/c
  - SuperSucker
    - fluorescence
    - a/c
    - SAFIRE
    - FRRF
  - aircraft (x,y,z=0-5m)
  - satellite
  - discrete samples
  - zooplankton [SP,WP,MS,JM]
    - nets
    - bioacoustics
      - HTI
      - 120 kHz Biosonics
3. 3. Analysis & Science Objectives
  - define transport
    - co-ordinate system
    - shelf defined as inshore of the 200 m isobath
  - calculate advective transport both cross-shelf & alongshore
    - water
    - nutrients
    - iron
    - phytoplankton
  - export/import from/to shelf
    - across
    - along
    - retention time
  - surface and subsurface chlorophyll features
    - transition between them
  - surface pool near Stonewall Bank
    - how is the high productivity maintained?
  - time scale of response
    - transitions
  - downwelling/onshore transport
    - 20-25 Aug (south) + other times
  - mixed-layer dynamics
  - Columbia River plume
Carbon and nutrient cycling (We didn't have time to flesh this out at the
workshop, but recognized that most involved were at OSU so that this could
be developed further later)
- differences between simpler topography in N and more complex in S
- better resolution of measurements vs. new understanding of processes
  - advective vs. diffusive supply of nutrients
Bottom properties (e.g. density, velocity, chemistry, biology) determined
by wind-driven motion (upwelling and downwelling) in a region of complex
bathymetry
1. 1. Times during cruise for focussin on this objective:
  Northern line -- 18-28 May, 7-12 Aug
  Southern line -- 28-31 May, 12-25 Aug
2. 2. Data Description (immediate goal is to document the spatial/temporal
  sampling resolution and locations, and to determine when data are
  fully processed and calibrated and available for use)
  
  Surface transport [ML,PMK,TB]
  - moorings
  - wind products
  - shipboard ADCP
  - model (u,v)
  Hydro (x,z,t) [JAB,AP,BH]
  - moored T,S
  - shipboard T,S
    - SeaSoar (7-10 mab)
    - Chameleon (0 mab)
    - SuperSucker (3 mab)
    - CTDs
  - aircraft
    - AXBT (0 mab)
  Chemistry [BH,ZC]
  - nutrients
  - pCO2
  - O2
  - Fe
  Biology [PAW,TJC,RL]
  - moorings
    - backscatter (38 m NIS, 65 m NMS)
  - SuperSucker
    - fluorescence
    - a/c
    - SAFIRE
    - FRRF
  - discrete samples
  - zooplankton [SP,WP,MS,JM]
    - nets
    - bioacoustics
      - HTI
      - 120 kHz Biosonics
3. 3. Analysis & Science Objectives
  - define transport
    - co-ordinate system
    - shelf defined as inshore of the 200 m isobath
  - calculate advective transport both cross-shelf & alongshore
    - water
    - nutrients
    - iron
    - phytoplankton
  - export/import from/to shelf
    - across
    - along
    - retention time
  - seed stocks
  - benthic bio-optical features
  - time scale of response
    - transitions
  - downwelling/onshore transport
    - 20-25 Aug (south) + other times
  - cold pool near Stonewall Bank
    - transport
    - source: N and/or S
  - bottom mixed-layer dynamics & thickness
    - turbulent or advective flux out of near-bottom water
  - deep respiration
    - contrast N and S

Brief reports from Small Working Groups on Date Integration etc.

Chlorophyll calibration [TC, RL, PAW, CKB, BH]

ac-9 on SeaSoar, SuperSucker and Wecoma flow-through

HPLC & extracted pigments
flow-through (already converted to ug/L)

flow-through (discrete extracted chlorophyll) (ug/L)
SeaSoar (x,y,z,t) (already converted to ug/L)

fl (identify cross-check samples from vessels)
radiometers (identify cross-check samples from vessels)

need surface in water observations and sections for comparison

MODIS "validated" algorithm
SeaWifs

Turbulence [AP, JM, MO, JA]

comparison of epsilon, simga_theta, tke, and v on N site (May cruise)
look at splitting of BBL in two dense pools found in the model

3D structure of the dense bottom pool

spatial structure of epsilon, simga_theta, tke, and v around Heceta Bank

ISUS Nitrate versus Supersucker nitrate [ZC, BH, JB]

identify nutrient samples and finish processing

flow-through (5 m) [DH to finalize Fall '02]
discrete samples from CTD/rosette profiles from Wecoma
[JJ to process and finalize Fall '02]

ISUS functionality was better in May due to lamp degradation and
non-optimal software setup in August
check dynamic range of ISUS versus discrete profiles and Supersucker
make property-property (e.g., nitrate-salinity) plots
check surface NO3 from Wecoma flow-through versus ISUS (ala SeaSoar
checks of salinity)
compare "drive by" ISUS on SeaSoar near Supersucker on Thompson
during August near Stonewall Bank
compare cross-shelf sections close in time from Wecoma BB5 (both
May/June and August cruises) and Supersucker
work up and plot light transmission sections from ac-9 on SeaSoar [JB]
Zanna to submit poster abstract for Fall '02 AGU