GNATS


For larger experiments, markers may take some time to appear and may slow down your browser.
Experiment:GNATS
PIs*: Balch, William
Start Time:2008-01-05 15:58:00
End Time:2018-12-07 00:25:19
North:44.519
South:0.000
East:0.000
West:-70.658
Data Types: cast, drifter, flow_thru, matchup, pigment
Parameters: ag ag_sd agp agp_sd bb bb_sd bsi c c_sd cdom cgp cgp_sd chl chl_a chl_sd chl_stimf ed es es_sd kd lsky lsky_sd lt lt_sd lu lw no2_no3 npp npp_sd oxygen pic po4 poc pon relaz sal senz sio4 stimf wt
*Listed alphabetically

DOI

10.5067/SeaBASS/GNATS/DATA001

Description

The Gulf of Maine (GoM) is a highly productive shelf sea that constitutes a large part of the N.E. US Continental Shelf. We have run a time series across the GoM for the last 8 years known as "GNATS" (Gulf of Maine North Atlantic Time Series). It consists of monthly, cross-Gulf sampling on ships of opportunity, during clear-sky days, so that we are assured concurrent measurements from ship and satellite (ocean color, SST). The power of this strategy is seen in our 95% success rate for being at sea during clear, high quality overpasses (randomly, one would expect a success rate of ~10% due to the GoM cloud climatology). We then can extrapolate our large shipboard data set of carbon cycle parameters to regional scales using synoptic remote sensing. GNATS includes a suite of carbon-specific standing stocks and rate measurements (e.g. POC, PIC [calcite], DOC, primary productivity, and calcification) plus hydrographic, chemical and optical measurements. Through coordinated ship/satellite measurements, we can constrain the major carbon production terms of the Gulf, follow their monthly variation using synoptic remote sensing, and regionally tune satellite algorithms. GNATS documents not only marine carbon pools, but it includes carbon supplied from the terrestrial watershed; this is why the Gulf is optically-dominated by Case II waters. We propose to A) continue GNATS, coordinated ship and satellite measurements for another 3 years, B) provide monthly, regional estimates of the standing stock and production terms for the various particulate and dissolved carbon fractions based on satellite ocean color observations and C) perform a statistical comparison of photoadaptive parameters in the Mid-Atlantic Bight and GoM to examine how broadly we can extrapolate these results along the NE U.S. Continental Shelf. Deliverables of this work will be: ship-based quantification of the various components of the carbon cycle in the GoM (standing stocks of POC, PIC, DOC plus primary production/calcification rates), an improved DOC algorithm, tuning of satellite carbon algorithms for the NE Continental Shelf, and documentation of the long- term biogeochemical and ecological changes occurring in the GoM carbon cycle. Quantification of the variability in the composition and concentration of dissolved and particulate carbon over a wide range of temporal and spatial scales is the first step towards understanding the role of coastal ecosystems in the global carbon cycle.

URL

http://cce.nasa.gov/cgi-bin/cce/cce_profile.pl?project_group_id=47

Quick File Search (Preview and bulk download results)

Click here to perform search.

Cruises

Cruise
grampus_mission1_east
grampus_mission2.1_east
grampus_mission2.1_west
grampus_mission2_east
grampus_mission2_west
grampus_mission3_east
grampus_mission3_west
grampus_mission4_east
grampus_mission4_west
henry_mission10_east
henry_mission10_west
henry_mission11_east
henry_mission11_west
henry_mission12_east
henry_mission12_west
henry_mission13_east
henry_mission13_west
henry_mission14_east
henry_mission16_east
henry_mission16_west
henry_mission17_east
henry_mission17_west
henry_mission18_east
henry_mission18_west
henry_mission1_east
henry_mission1_west
henry_mission2_east
henry_mission3_east
henry_mission4_east
henry_mission4_west
henry_mission5_east
henry_mission5_west
henry_mission6_east
henry_mission6_west
henry_mission7.1_east
henry_mission7.1_west
henry_mission7_east
henry_mission7_west
henry_mission8_east
henry_mission9_east
henry_mission9_west
s080105e
s080105w
s080106w
s080421e
s080421w
s080422w
s080515e
s080516w
s080530e
s080530w
s080613e
s080613w
s080711e
s080711w
s080810e
s080810w
s080815w
s080817e
s080817w
s080912e
s080912w
s081111e
s081112w
s090401e
s090401w
s090402w
s090607e
s090705e
s090705w
s090719e
s090719w
s090807e
s090807w
s090904e
s090904w
s091002e
s091002w
s091118e
s091118w
s091119w
s100309w
s100310w
s100522w
s100723w
s101013w
s120131e
s120201w
s120718e
s120719w
s121118e
s121118w
s121119w
s130302e
s130302w
s130303w
s130821e
s130822w
s131105e
s131106w
s140601w
s140623w
s140722w
s140827w
s140917w
s141009w
s141205e
s141206w
s150121e
s150122w
s150604w
s150625w
s150723w
s150901w
s150916w
s151008w
s151208e
s151209w
s160428e
s160429w
s160720w
s160811e
s160811w
s160812w
s160913w
s160927w
s170604w
s170710w
s170804w
s170815w
s170927w
s171014w
s180118e
s180119w
s180410e
s180411w
s180611w
s180704e
s180731w
s180823w
s180917w
s181001w
s181205e
s181206w