DISCOVER AQ
Air quality aircraft field campaign
 12 flight days in July – Upper Chesapeake Bay (~38.8 N to 39.2 N)
 24 hours (3-6 flight days) in August (between 8th and 15th) – South Chesapeake Bay (NASALangley area)
GEO-CAPE Chesapeake Bay Field Campaign Summer 2011
$149.9K total funding distributed through GSFC
A. Prioritized objectives of oceanographic campaign
1.
Short-term Dynamics (PRIMARY OBJECTIVE)
o Deconvolve spatial gradients with diurnal variability

Maintain station location throughout the day to understand causes of diurnal variability
(tides, in situ production, river discharge, etc.)
o Track water masses to resolve diurnal variability
Apply subsurface probe with tracking device
Use physical model (e.g., Ming Li - UMCES)
Use sequential high-res MODIS to infer water movement
o Transects to examine spatial gradients
latitudinal main-stem transect
meridional main-stem transect
near-shore to bay center transect
2.
Focus on carbon sources and fluxes
o Primary productivity rates and stocks
o Fluorescence efficiency
o Land-ocean carbon dynamics (overlaps with previous objective)
Distinguish carbon sources (terrigenous carbon, and black carbon)
 Collect small number of samples for analysis with future funding
 Apply UV-VIS Rrs and absorbance data to develop relationships
for terrigenous C and black carbon.
Examine spatial gradients from airborne and satellite data (what spatial
resolution required from GEO?)
3.
Emphasize linkages with DISCOVER AQ
o Improve nLw retrievals in UV-NIR
Measurements for atmospheric corrections of water-leaving radiances:
aerosols, NO2, Ozone, water vapor, etc.
 Spatial and diurnal variability
ACAM sensor (GSFC) – 500m spatial resolution & 7km swat width
 Need expert to process airborne data for ocean color applications
with future funding
 2 spectrometers: 305-520 nm (0.8nm resolution) & 480-900nm
(1.6nm resolution)
4.
5.
 NO2 retrieval sensitivity ~2e15 cm-2; aerosols & O3 algorithms
under development
Optical closure analysis with future funding
Algorithm development for coastal ocean products
o Study processes from multi-spectral and diurnal observations (NCP, CDOM
photooxidation, etc.)
o Collect appropriate samples and measurements to develop PFT (phytoplankton
functional types) algorithms with future funding
o Coastal waters algorithm development for GEO-CAPE data products with future
funding
Improved inversion algorithms with hyperspectral radiometry and high
spectral resolution (<5nm)
Band-ratio algorithm development with UV and NIR bands
Air-sea exchange
o CO2 exchange
Autonomous Surface Vessels (e.g. OASIS platform, possible collaboration
with Wade McGillis – LDEO)
o Black carbon
o Marine primary biogenic aerosols (intact algae)
Josie Aller (StonyBrook) willing to bootleg DNA analysis
Elias Dueker (Columbia Univ.) - Microbial aerosol sampling
o Glyoxal flux from bay to atmosphere
B. Sampling Plan

Ship availability
o NOAA Sanctuaries 85ft vessel (NAVY SRVx based in Norfolk; ~$1500/day)
A-frame, winches, crane (w/ slip ring fo rosette)
Looking into availability of rosette with bottles (any suggestions)?

Reserve 15 days on NOAA SRVx vessel (July 6-20) plus 2 days transit time
o Daily cruises between ~7am to 6:30pm (sunrise at ~6am and sunset at ~7:30pm)
o Maximum of 10 days at sea during good sky conditions

Focus on short-term dynamics (other objectives interwoven within this objective)
o 3 days: stationary - measurements at one location (9 to 10 stations per day)
upper bay main stem (flight day)
mid-bay main stem (non-flight day)
lower bay main stem (non-flight day)
o 4 days: follow water mass (drogue w/GPS tracking) (6 stations per day)
upper bay main stem (flight day)
Potomac River plume (non-flight day)
Marsh ebb tide (flight day)
Bloom or lower-bay main stem (flight/non-flight day)
o 3 days: additional transects (6 stations per day)
upper bay main stem cross-bay transect (flight day)
upper bay near-shore to center bay transect (flight day)
mid- to lower bay main stem meridional transect (non-flight day)
Chesapeake Bay Campaign – July 2011
Sampling: 12 flights over 1 month in July, with 10 cruises over a 15-day period (match with flights
when possible)
* 3 days: stationary - measurements at one location (9-10 stations)
Spatial:
* 4 days: follow water mass (drogue w/ GPS tracking) (6 stations)
* 3 days: additional transects (6 stations)
Temporal:
6 to 10 discrete stations during each day
Vertical:
3 depths (surface, 10% and 1% light depth) [why not surface, subsurface Chl max, and 1%
light depth – our focus is phytoplankton but 10% light and Chl max may not be collocated]
Total
Samples:
Maximum: (3*10+4*6+3*6)*3=216 samples
Total
stations:
Maximum: (3*10+4*6+3*6)=75 stations (unique station profiles)
FIELD MEASUREMENTS – DATA PROCESSING
#
1
2
3
Participants
Rick Miller
Chris Buonassissi
Stan Hooker
4
5
6
John Morrow
Mike Ondrusek
Hu’s technician?
7
Joe’s student
8
9
10
Antonio
Antonio’s postdoc
SERC Technician
#
1
Participants
Hu
Measurements
a, b, c, bb (ac-9, ac-s, VSF3, ECO triplet, CTD) - profiles
Same as above
Ed, Lu, Es - C-Ops (19-band (10nm FWHM) UV-NIR
sensor) – profiles (light depth determination for
sampling)
Same as above
Ed, Lu, Es - HyperPro (UV-NIR)
Filtration, NIR hand-held above-water radiometer/ 350 to
880 nm 512 channels (15 days)
O2 and pCO2, DIC, TA and pH, drogue w/ GPS
tracking, (small CTD w/ a Wetlabs triplet, O2, PAR) (15
days)
chief scientist, filtration
Filtration (10 days)
Filtration (10 days)
LAB WORK– DATA PROCESSING
Measurements
Fluor_Chla, ap, aph, ad, aCDOM (half samples),
<<100 phytoplankton taxonomy (no cost)
Funding
$20-25K ?
?
No cost
$10K field work
?
See lab work
See lab work
See lab work
Funding
$15K lab work and
processing work
2
Antonio’s postdoc
and research
associate
POC/PN, aCDOM (half samples), DOC/TDN, SPM,
HPLC pigments (? no cost)
(with support from NASA Cal/Val office?)
3
SERC Technician
4
Mulholland student?
1
2
NOAA Vessel
Per diem (8 people)
3
Hotel?
EEMs (on limited samples: 2weeks), lignin phenols &
black carbon (samples collection/filtration only: 2weeks)
Primary productivity
Vessel Costs and Miscellaneous
15+2 days @ 1,500/day
6 people local: per diem for 10 days (6*10*40)
5 people non-local: per diem for 15 days (5*15*40)
There is the option of berths on ship for 8 techs/students
If not an option:
5 people non-local: (5*16days*100)
TOTAL COST:
$10K (10 days field
work for post-doc,
limited lab
processing &
supplies
$8K (includes 10
days field work)
?
25,500
4,800
3,000
~8K
<$140K ?
 Additional Ideas:
1. Air-Sea gas exchange-OASIS platform (Wade McGillis; have not received budget yet)
2. Aerosols/Trace gasses (UNH; have not received budget yet); CH4, DMS, glyoxal,
isoprene, methyl iodide, methyl bromide.