View
253
Download
5
Category
Tags:
Preview:
Citation preview
Global Drifter Program (GDP)
Rick LumpkinRick LumpkinNational Oceanic and Atmospheric Administration (NOAA)
Atlantic Oceanographic and Meteorological Laboratory (AOML)Miami, Florida USA
Drifter Measurements of Surface Velocity, SST and Atmospheric Pressure
Data Buoy Cooperation Panel (DBCP) 20th Session – October 2004Chennai, India
Data Buoy Cooperation Panel (DBCP) 20th Session – October 2004Chennai, India
GDP purpose
GDP: the principal component of the Global Surface Drifting Buoy Array, a branch of NOAA’s Global Ocean Observing System (GOOS) and Global Climate Observing System (GCOS) and a scientific project of the DBC.
Objectives:
Maintain a global 5ºx5º array of ARGOS-tracked Lagrangian surface drifting buoys to meet the need for an accurate and globally dense set of in-situ observations: mixed layer currents, SST, atmospheric pressure, winds, and salinity. Provide data processing system for scientific use of these data.
These data support short-term (seasonal-to-interannual) climate predictions as well as climate research and monitoring.
GDP: the principal component of the Global Surface Drifting Buoy Array, a branch of NOAA’s Global Ocean Observing System (GOOS) and Global Climate Observing System (GCOS) and a scientific project of the DBC.
Objectives:
Maintain a global 5ºx5º array of ARGOS-tracked Lagrangian surface drifting buoys to meet the need for an accurate and globally dense set of in-situ observations: mixed layer currents, SST, atmospheric pressure, winds, and salinity. Provide data processing system for scientific use of these data.
These data support short-term (seasonal-to-interannual) climate predictions as well as climate research and monitoring.
• Manufacturers in private industry: build the drifters according to closely monitored specifications
• NOAA’s Atlantic Oceanographic and Meteorological
Laboratory (AOML): coordinates deployments, processes the data, archives data at AOML and at MEDS (Canada), maintains META files describing each drifter deployed, develops and distributes data-based products, updates the GDP website
• NOAA’s Joint Institute of Marine Observations (JIMO):
supervises the industry, upgrades the technology, purchases the drifters, develops enhanced data sets, maintains liaison with individual research programs that deploy drifters
• Manufacturers in private industry: build the drifters according to closely monitored specifications
• NOAA’s Atlantic Oceanographic and Meteorological
Laboratory (AOML): coordinates deployments, processes the data, archives data at AOML and at MEDS (Canada), maintains META files describing each drifter deployed, develops and distributes data-based products, updates the GDP website
• NOAA’s Joint Institute of Marine Observations (JIMO):
supervises the industry, upgrades the technology, purchases the drifters, develops enhanced data sets, maintains liaison with individual research programs that deploy drifters
The GDP is managed with close cooperation between:
Global Array (present status)
Drifters deployedSeptember 2003 – August 2004
Tropical Oceans (20°S – 20°N)
Pacific: 169 Atlantic: 100 Indian: 18
Drifters deployedSeptember 2003 – August 2004
Subtropical Southern Hemisphere (40°S – 20°S)
55 drifters deployed. Barometer upgrades: 5 (Pacific), 6 (Atlantic)
Drifters deployedSeptember 2003 – August 2004
Southern Ocean (south of 40°S)
92 drifters deployed. Barometer upgrades: 74
2005: Goals and plans
Deploy 900 Drifters in the period between October 2004 and September 2005. Up to 300 SVP buoys may be upgraded with barometers by NOAA/OGP.
REACH GOAL: 1250 drifters, 5° x 5° resolution of the world’s oceans.
(All plans subject to JTA negotiations)
Details: Craig Engler’s talk
Deploy 900 Drifters in the period between October 2004 and September 2005. Up to 300 SVP buoys may be upgraded with barometers by NOAA/OGP.
REACH GOAL: 1250 drifters, 5° x 5° resolution of the world’s oceans.
(All plans subject to JTA negotiations)
Details: Craig Engler’s talk
Other 2004 GDP Activities
Scientific achievements,Technical developments.
Synthesizing different observations
Drifters: in-situ currents throughout the world(but not continuous)
Altimetry: continuous estimates of geostrophic currents along satellite passes (but not direct measurements, and mean is contaminated by geoid errors)
Winds: can be used to estimate the main ageostrophic current.
COMBINE INFORMATION!!!
Drifters: in-situ currents throughout the world(but not continuous)
Altimetry: continuous estimates of geostrophic currents along satellite passes (but not direct measurements, and mean is contaminated by geoid errors)
Winds: can be used to estimate the main ageostrophic current.
COMBINE INFORMATION!!!
Niiler, Maximenko and McWilliams, 2004
Absolute sea level, 1992-2002
Seasonal variations of the Tropical Atlantic
Drifter observations: inhomogeneous in space and time.
With seasonal changes, this can create biases when averaged in boxes.
Lumpkin and Garzoli, 2005
Monthly current anomalies in the ENSO regionSeptember 2004
Development of the “mini” drifter
Redesigned at JIMO
40% smaller componentsTransmitter: 14V 4VNewer design techniquesSAME DRAG AREA
RATIO
Cost of a drifter (approx):
2002: $21502003: $18002004: $1700
Cost of a drifter (approx):
2002: $21502003: $18002004: $1700
Measuring sea surface salinity with drifters
SVP surface
float
Microcat mounting assembly
GDP/SIO development
Additional development at WHOI (NOPP/NASA funding).
The GDP will facilitate the WHOI efforts by making SVP platforms available for testing and deployments.
This is easily accomplished via Clearwater Instruments, Inc., who builds drifters for the GDP and who is an industrial partner in this WHOI/NOPP project.
GDP/SIO development
Additional development at WHOI (NOPP/NASA funding).
The GDP will facilitate the WHOI efforts by making SVP platforms available for testing and deployments.
This is easily accomplished via Clearwater Instruments, Inc., who builds drifters for the GDP and who is an industrial partner in this WHOI/NOPP project.
SVP surface floats with Microcats installed
Deployments and recoveriesof SVP-Microcats
2000-2004: 30 SVP-Microcats deployed - Microcat attached to surface float- launched in East China Sea- two recovered: post calibration shows
no detectable shifts (<1 month)
2004-2005 plans
GDP/SIO funded to build 5 pairs of SVP-Microcats.- Pairs: one with, one without pumping.
Pairs will be launched from French Met office ships.- Location: west of France (e.g. Bay of Biscay).- Requested: sequential recoveries over next
12 months for post-calibration.
Observations of hurricanes
Thanks
Meteo-France
South African Weather Service
New Zealand Met Service
Australian Bureau of Meteorology
Fisheries Research Institute (INIDEP) and
Servicio de Hidrografía Naval, Argentina
Instituto Canario de Ciencias Marinas
(ICCM), Canary Islands
National Institute of Oceanography (NIO) and
National Institute of Ocean Technology
(NIOT), India
Scripps Institution of Oceanography
CICESE, Mexico
Voluntary Observing Ships (VOS)
International Ice Patrol (IIP)
Meteo-France
South African Weather Service
New Zealand Met Service
Australian Bureau of Meteorology
Fisheries Research Institute (INIDEP) and
Servicio de Hidrografía Naval, Argentina
Instituto Canario de Ciencias Marinas
(ICCM), Canary Islands
National Institute of Oceanography (NIO) and
National Institute of Ocean Technology
(NIOT), India
Scripps Institution of Oceanography
CICESE, Mexico
Voluntary Observing Ships (VOS)
International Ice Patrol (IIP)
United States Air Force
Oregon State University
US Naval Oceanographic Office
United States Coast Guard
INMET and Centro de
Hydrografia de Marinha,
Brasil
United Kingdom Met Office
Woods Hole Oceanographic
Institution
Raytheon Polar Services
University of Cape Town
Environment Canada
And others …
United States Air Force
Oregon State University
US Naval Oceanographic Office
United States Coast Guard
INMET and Centro de
Hydrografia de Marinha,
Brasil
United Kingdom Met Office
Woods Hole Oceanographic
Institution
Raytheon Polar Services
University of Cape Town
Environment Canada
And others …
Our appreciation to the following Operational Partners for their contributions to GDP activities
Rick Lumpkin(Rick.Lumpkin@noaa.gov)
National Oceanic and Atmospheric Administration (NOAA)Atlantic Oceanographic and Meteorological Laboratory (AOML)
Miami, Florida USA
Recommended