Upwelling Indices

Downloads

Traditional Bakun calculation at 15 positions along the west coast of North America

Upwelling Indices

Six-Hourly Upwelling Indices (1967-present)

uilocations=[{lat:60,lon:149},{lat:60,lon:146},{lat:57,lon:137},{lat:54,lon:134},{lat:51,lon:131},{lat:48,lon:125},{lat:45,lon:125},{lat:42,lon:125},{lat:39,lon:125},{lat:36,lon:122},{lat:33,lon:119},{lat:30,lon:119},{lat:27,lon:116},{lat:24,lon:113},{lat:21,lon:107}]
products=[{name:"upwell_",title:"Upwelling Index"},{name:"wind_",title:"Geostrophic Wind"},{name:"stress_",title:"Wind Stress"},{name:"slp_",title:"Sea Level Pressure"}]

dropdownMap = new Map(uilocations.map(loc => {
  const label = `${loc.lat}N ${loc.lon}W`;
  const fileName = `upwell${loc.lat}N${loc.lon}W`;
  return [label, fileName];
}))

// Render the dropdown menu
viewof selectedFile = Inputs.select(dropdownMap, { label: "Location:" , width:140 })
baseUrl = "https://oceanwatch.pfeg.noaa.gov/products/PFELData/upwell/6_hourly/"
downloadUrl = baseUrl + selectedFile

currentLabel = [...dropdownMap.entries()].find(([label, file]) => file === selectedFile)[0]
// 5. Render the HTML download link
html`<a href="${downloadUrl}" class="btn btn-primary"  target="_blank">
  Download
</a><br>6-hourly upwelling index at ${currentLabel}`

Daily Upwelling Indices (1967-present)

viewof selectedIndex = Inputs.select(
  uilocations.map((loc, idx) => idx), 
  {
    label: "Location:",
    width:140,
    format: idx => `${uilocations[idx].lat}N ${uilocations[idx].lon}W`
  }
)
chosenLoc = uilocations[selectedIndex] || uilocations[0];
currentLabel2 = `${chosenLoc.lat}N ${chosenLoc.lon}W`;

// 4. File and URL layout
indx = Number(`${selectedIndex ?? 0}`)+1;
indx00 = String(indx).padStart(2, '0'); 
fileName2 = "p" + indx00 + "dayac.all"
baseUrl2 = "https://oceanwatch.pfeg.noaa.gov/products/PFELData/upwell/daily/"
downloadUrl2 = baseUrl2 + fileName2
html`<a href="${downloadUrl2}" target="_blank" class="btn btn-primary">
  Download</a><br>Selected: Daily Upwelling index at ${currentLabel2}`

Monthly Upwelling Indices and Anomalies (1946-present)

Upwelling Index For All 15 Positions
Anomalies For All 15 Positions

function getfiledate(d) {
    var y = String(d.getFullYear()).padStart(4, '0');
    var m = String(d.getMonth() + 1).padStart(2, '0'); 
    return y.substr(2) + m;
}

// Correct OJS block statement syntax
links = {
    let d = new Date();
    d.setDate(1); 
    d.setDate(0); 
    const thisyrmon = getfiledate(d);
    const thisyrmondate = (d.getMonth() + 1) + "/" + d.getFullYear();

    let d1 = new Date();
    d1.setDate(1); 
    d1.setMonth(d1.getMonth() - 1); 
    d1.setDate(0); 
    const lastyrmon = getfiledate(d1);
    const lastyrmondate = (d1.getMonth() + 1) + "/" + d1.getFullYear();

    return { thisyrmon, thisyrmondate, lastyrmon, lastyrmondate };
}

html`
<a href="https://oceanwatch.pfeg.noaa.gov/products/PFELData/upwell/monthly/table.${links.thisyrmon}" target="_blank">Most recent month (${links.thisyrmondate})</a><br>
<a href="https://oceanwatch.pfeg.noaa.gov/products/PFELData/upwell/monthly/table.${links.lastyrmon}" target="_blank">Previous recent month (${links.lastyrmondate})</a>`

Derived Winds and Ocean Transports

The files available in the menus below each contain:

surface atmospheric pressure-
northward component of surface wind-
eastward component of surface wind-
northward wind stress-
eastward wind stress-
wind stress curl-
cube of wind speed-
northward component of Ekman transport-
eastward component of Ekman transport-
offshore component of Ekman transport-
direction of offshore component of Ekman transport-
vertical velocity into the Ekman layer
Sverdrup transport

Six-Hourly Derived Winds and Ocean Transports (1967-1999)

dropdownMap3 = new Map(uilocations.map(loc => {
  const label = `${loc.lat}N ${loc.lon}W`;
  const fileName = `${loc.lat}n${loc.lon}w_67to99.amk`;
  return [label, fileName];
}))

// Render the dropdown menu
viewof selectedFile3 = Inputs.select(dropdownMap3, { label: "Location:" , width:140 })
baseUrl3 = "https://oceanwatch.pfeg.noaa.gov/products/PFELData/arrowmark_indices/"
downloadUrl3 = baseUrl3 + selectedFile3

currentLabel3 = [...dropdownMap3.entries()].find(([label, file]) => file === selectedFile3)[0]
// 5. Render the HTML download link
html`<a href="${downloadUrl3}" class="btn btn-primary" target="_blank">
  Download
</a><br>6-hourly derived winds and ocean transports at ${currentLabel3}`

Six-Hourly Derived Winds and Ocean Transports (January 2000-present)

dropdownMap4 = new Map(uilocations.map(loc => {
  const label = `${loc.lat}N ${loc.lon}W`;
  const fileName = `${loc.lat}_${loc.lon}_6hr.2000`;
  return [label, fileName];
}))

// Render the dropdown menu
viewof selectedFile4 = Inputs.select(dropdownMap4, { label: "Location:" , width:140 })
baseUrl4 = "https://oceanwatch.pfeg.noaa.gov/products/PFELData/arrowmark_indices/"
downloadUrl4 = baseUrl4 + selectedFile4

currentLabel4 = [...dropdownMap4.entries()].find(([label, file]) => file === selectedFile4)[0]
// 5. Render the HTML download link
html`<a href="${downloadUrl4}" class="btn btn-primary" target="_blank">
  Download
</a><br>6-hourly derived winds and ocean transports at ${currentLabel4}`

Monthly Mean Derived Winds and Ocean Transports at all 15 locations

1946-1999 January 2000 - present

1-degree Bakun Calculation at 15 positions along the west coast of North America

Near Real Time (6-hrly, 1st day of the current month to 0600 Pacific Time of the current day, updated daily)

dropdownMap5 = new Map(uilocations.map(loc => {
  const label = `${loc.lat}N ${loc.lon}W`;
  const fileName = `${loc.lon}W_${loc.lat}N`;
  return [label, fileName];
}))

dropdownMap6 = new Map(products.map(prod => {
  const label = `${prod.title}`;
  const fileName = `${prod.name}`;
  return [label, fileName];
}))

// Render the dropdown menu
viewof selectedFile5 = Inputs.select(dropdownMap5, { width:100 })
html`<br>`
viewof selectedFile6 = Inputs.select(dropdownMap6, { width:100})
baseUrl5 = "https://oceanwatch.pfeg.noaa.gov/products/current_gifs/"
downloadUrl5 = baseUrl5 + selectedFile6 + selectedFile5

currentLabel5 = [...dropdownMap5.entries()].find(([label, file]) => file === selectedFile5)[0]
currentLabel6 = [...dropdownMap6.entries()].find(([label, file]) => file === selectedFile6)[0]
// Render the HTML download links
html`<span style="margin-right:10px;"><a href="${downloadUrl5}.gif" class="btn btn-primary" target="_blank">
  View Plot
</a></span><span><a href="${downloadUrl5}.txt" class="btn btn-primary" target="_blank">
  Text Download
</a><span><br>${currentLabel6} at ${currentLabel5}`

Choose a location and product:

Get a plot or text download:

6-hourly 1-deg global data

Monthly 1-deg global data

Monthly 1-degree data

Including the following

Sea Level Pressure
Geostrophic Winds
Wind Stress calculated from Geostrophic Wind
Wind Stress Curl calculated from Geostrophic Wind
Ekman Transport

Bakun Calculation at other Eastern Boundary Current Locations

See the “Global Upwelling Index” section under “Bakun Index” to calculate Upwelling Index at other locations from Elkman Transport (Northern Hemisphere: 1967 - present, Southern Hemisphere: 1981 - present)

CUTI and BEUTI

CUTI and BEUTI are currently being updated approximately monthly. In the near future they will be automatically updated daily. For questions about CUTI/BEUTI contact Michael.Jacox@noaa.gov

When using CUTI or BEUTI, please cite Jacox et al. (2018)

CUTI
Daily indices [csv] [NetCDF]
Monthly means of daily indices [csv] [NetCDF]

BEUTI
Daily indices [csv] [NetCDF]
Monthly means of daily indices [csv] [NetCDF]

References

Jacox, M. G., C. A. Edwards, E. L. Hazen, and S. J. Bograd. 2018. “(2018) Coastal Upwelling Revisited: Ekman, Bakun, and Improved Upwelling Indices for the u.s. West Coast.” Journal of Geophysical Research, ahead of print. https://doi.org/10.1029/2018JC014187.