Calculate in-situ Nitrate concentrations
using Fitted UV Absorbance Spectra
from the deployed L20 ISUS units.
View detail of
ISUS sensor.
Deployment
Surface
Deep
Start Date
January
February
March
April
May
June
July
August
September
October
November
December
1
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31
Start Time
(GMT)
0
1
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0
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59
Data Span
(Days)
Wavelength Range
200
201
202
203
204
205
206
207
208
209
210
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212
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215
216
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400
Start
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
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223
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227
228
229
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231
232
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234
235
236
237
238
239
240
241
242
243
244
245
246
247
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249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
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351
352
353
354
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400
Finish
Baseline Model
[ax + b]
[ax^2 + bx +c]
exp[ax + b]
exp[ax^2 + bx +c]
Spectra Filtering
Raw ISUS Abs
Smoothed Abs
1st Derivative Abs
2nd Derivative Abs
Temperature Corr
No Correction
Xform Br Ecoefs
Salinity Fit
Fit Salinity
Fix Sal (to CTD)
Data Item Selection
Enable
Fitted Spectra
Absorbance Spectra
Intensity Spectra
Dark Current Spectra
-------
ISUS Nitrate
ISUS Salinity
ISUS Can Temp
ISUS Reference Channel
ISUS Dark Current
ISUS Fit Residuals
ISUS Pixel Intensity
Data Item 1
X
ISUS Nitrate
ISUS Salinity
ISUS Can Temp
ISUS Reference Channel
ISUS Dark Current
ISUS Fit Residuals
ISUS Pixel Intensity
-------
CTD Temperature
CTD Salinity
CTD Pressure
CTD Analog 1
CTD Analog 2
CTD Analog 3
CTD Analog 4
CTD Sigma-T
-------
AUX CTD Temperature
AUX CTD Salinity
AUX CTD Pressure
Data Item 2
Output Mode
Time Series Plot
Property-Property Plot
Formatted Text
Click ONCE on buttons for selection.
© MBARI
Last Update:
Oct 2005
LJ Coletti
