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Row Type Variable Name Attribute Name Data Type Value
attribute NC_GLOBAL access_formats String .htmlTable,.csv,.json,.mat,.nc,.tsv
attribute NC_GLOBAL acquisition_description String Coral collection:\\u00a0Coral plugs were collected in December 2012 from\nmassive\\u00a0Porites\\u00a0colonies at a naturally low-\\u03a9ar\\u00a0reef site\n(7.324 N, 134.493 E; mean \\u03a9ar\\u00a0= 2.3; n = 78) and a naturally\nhigh-\\u03a9ar\\u00a0reef site (7.268 N, 134.522 E; mean \\u03a9ar\\u00a0= 3.7; n\n= 75). At each reef site, small skeletal cores (diameter = 3.5 cm) were\nremoved from massive colonies (one core per colony) at 2-3m depth using\nunderwater pneumatic drills, and cores were cut with a lapidary table saw to\napproximately 1 cm below the tissue layer. The plugs were affixed to nylon\nsquare base screws with marine epoxy, secured to egg crate racks, and returned\nto their original reefs to allow the corals to recover from the coring\nprocedure. All corals survived two months of recovery on the reef and on all\ncorals living tissue had fully overgrown the sides of the plugs so that no\nunderlying skeleton was exposed. Corals were recovered in February 2013.\n \n\\u00a0\n \nCO2 manipulation experiment:\\u00a0Corals from two reefs were cultured at three\nCO2 levels for eight weeks in March to May 2013 (n = 10 corals per treatment,\nn = 60 corals total). The corals were individually incubated in independently\nmanipulated plastic cups (volume = 750 ml) to increase statistical power. Cups\nwere placed within a large, temperature-controlled water bath. The corals were\nmaintained at mean (\\u00b1 SD) temperatures of 29.4C \\u00b1 0.1C. Light was\nprovided by LED aquarium lights (Coralife) at average levels of 334 \\u00b1 48\numol photons m-2 s-1 (measured by an underwater quantum sensor, LI-COR) on a\n12h:12h light:dark schedule. Corals were fed live Artemia brine shrimp larvae\nevery other evening by pipetting 1 ml of concentrated brine shrimp in filtered\nseawater into each cup. Coral cups were cleaned weekly to prevent algae\novergrowth.\n \nMean pH (total scale)/\\u03a9ar levels for the three treatment conditions were\n7.98/3.0, 7.83/2.3, and 7.60/1.5. In each coral cup, carbon system chemistry\nwas regulated using a combination of flow-through pre-equilibrated water and\nbubbling of mixed air/CO2 gas. Incoming seawater (filtered to 0.35 um) from\nthe reef was aerated and split into three header tanks. In the low-CO2 header\ntank, water was bubbled with air. In the mid-CO2 and high-CO2 header tanks,\nCO2 levels were regulated by a pH controller (Drs. Foster and Smith) connected\nto a solenoid valve that introduced CO2 gas into the header tank through a\ncolumn diffuser. Water was siphoned from the three header tanks into each\ncoral cup at a rate of approximately 375 ml per hour. Each coral cup was also\nbubbled with either compressed air (low CO2 treatment) or mixed compressed air\nand CO2 gas (mid and high CO2 treatment) controlled by pairs of mass flow\ncontrollers (Aalborg Instruments) at approximately 200 ml per minute. Low\nalkalinity levels in the source water to the Palau International Coral Reef\nCenter (drawn from within the lower-alkalinity Rock Islands) prevented\n\\u03a9ar in the low-CO2 condition (\\u03a9ar = 3.0) from reaching values that\nwere as high as those measured on the barrier reef site (\\u03a9ar = 3.7).\n \nTo characterize the carbonate chemistry in each cup, total alkalinity (TA),\npH, temperature, and salinity were measured weekly. Spectrophotometric pH\nmeasurements were made with 2 mM m-Cresol purple indicator dye using a\nspectrometer with a 100 mm flow cell (Ocean Optics, mean precision = 0.005)\nfollowing procedures in Clayton and Byrne (1993) and Dickson et al. (2007) and\nusing the equation of Liu et al. (2011). Samples for TA were collected in 20\nml glass vials and poisoned with saturated mercuric chloride. Automated gran\ntitrations for TA were run on duplicate 1 ml samples using a Metrohm Titrando\n808 and 730 Sample Changer (mean precision = 4 umol/kg), and TA values were\nstandardized to certified reference materials obtained from Andrew Dickson\n[Scripps Institution of Oceanography (Dickson, 2001)]. Salinity was measured\nin each cup using an YSI salinity probe, and temperatures were measured using\nan Omega thermocouple (accuracy = 0.1 degree C). Full CO2 system parameters\nwere calculated from temperature, salinity, TA, and pH using CO2SYS (Lewis and\nWallace, 1998) with the constants of Mehrbach et al. (1973) as refit by\nDickson and Millero (1987).\n \nCoral calcification analysis:\\u00a0Calcification rates were measured using\nboth buoyant weight (Davies, 1989) and alkalinity anomaly (Chisholm and\nGattuso, 1991) techniques. Buoyant weights for each coral were collected at\nthe beginning of the experiment, after three weeks in experimental CO2\nconditions, and then weekly during weeks four to eight. Corals were weighed\nusing a balance with a weigh-below hook (Sartorius GC803S), which allows for\nbeneath-balance weighing of coral plugs that remain entirely submerged in\nexperimental cups maintained at treatment \\u03a9ar levels. Wet weight data\nwere converted to dry weights using an aragonite density of 2.93 grams per\ncubic centimeter\\u00a0and the density of seawater determined using a standard\nof known weight and density. Repeated buoyant weight measurements on the same\ncoral yielded mean precision estimates of \\u00b1 0.03 g.\n \nDay/night alkalinity depletion experiments were conducted at the end of the\neight-week experiment. Water flow to each coral cup was stopped during this\ntime but gas bubbling was continued in order to maintain pH levels. Samples\nfor TA were collected for each coral cup at the beginning and end of two four-\nhour periods (one four-hour period during the day and one at night).\nAlkalinity depletion incubations were simultaneously run in control cups\ncontaining only filtered seawater (n=3 per experiment).\\u00a0Because the net\nchange in TA values in control cups was within analytical precision (mean = 3\numol per kilogram), coral calcification was assumed to be the only process\nimpacting the alkalinity in the cups, where two moles of alkalinity were\nconsumed for every one mole of calcium carbonate produced. TA pre and post\nincubation was determined following the titration procedure described in\nsection 2.2 with samples run in triplicate.\n \nCalcification rates for both buoyant weight and alkalinity anomaly\nmeasurements were normalized to coral tissue surface areas. Surface areas were\nmeasured following the general procedure for aluminum foil wrapping, in which\nthe weight of aluminum foil needed to cover the entire surface of the coral\nskeleton is converted to area using a calibration curve (Marsh 1970). However,\nskeletons were wrapped with electrical tape instead of aluminum foil because\nthe use of electric tape provided tighter control and minimization of tape\noverlap, which can significantly overestimate surface area. The area of each\ncoral skeleton occupied by living tissue was wrapped in electrical tape that\nwas subsequently carefully trimmed to eliminate any overlay.\\u00a0The weight\nof tape used to cover the coral tissue for each skeleton were converted to\nsurface areas using a weight-to-area calibration, where ten pieces of\nelectrical tape of known area were weighed to build a weight-per-unit area\ncurve.\\u00a0Replicated electrical tape surface area estimates on ten coral\nskeletons produced a mean precision of 0.43 square cm, or ~1% of calculated\nsurface areas.
attribute NC_GLOBAL awards_0_award_nid String 520400
attribute NC_GLOBAL awards_0_award_number String OCE-1220529
attribute NC_GLOBAL awards_0_data_url String http://www.nsf.gov/awardsearch/showAward?AWD_ID=1220529 (external link)
attribute NC_GLOBAL awards_0_funder_name String NSF Division of Ocean Sciences
attribute NC_GLOBAL awards_0_funding_acronym String NSF OCE
attribute NC_GLOBAL awards_0_funding_source_nid String 355
attribute NC_GLOBAL awards_0_program_manager String David L. Garrison
attribute NC_GLOBAL awards_0_program_manager_nid String 50534
attribute NC_GLOBAL cdm_data_type String Other
attribute NC_GLOBAL comment String Weekly coral calcification rates in the CO2 manipulation experiment \n PI: Anne Cohen (WHOI) \n Contact: Hannah Barkley (WHOI) \n Version: 27 June 2017
attribute NC_GLOBAL Conventions String COARDS, CF-1.6, ACDD-1.3
attribute NC_GLOBAL creator_email String info at bco-dmo.org
attribute NC_GLOBAL creator_name String BCO-DMO
attribute NC_GLOBAL creator_type String institution
attribute NC_GLOBAL creator_url String https://www.bco-dmo.org/ (external link)
attribute NC_GLOBAL data_source String extract_data_as_tsv version 2.3  19 Dec 2019
attribute NC_GLOBAL date_created String 2017-06-27T20:03:30Z
attribute NC_GLOBAL date_modified String 2019-08-02T18:16:22Z
attribute NC_GLOBAL defaultDataQuery String &time<now
attribute NC_GLOBAL doi String 10.1575/1912/bco-dmo.706178.1
attribute NC_GLOBAL infoUrl String https://www.bco-dmo.org/dataset/706178 (external link)
attribute NC_GLOBAL institution String BCO-DMO
attribute NC_GLOBAL instruments_0_acronym String LI-COR LI-192 PAR
attribute NC_GLOBAL instruments_0_dataset_instrument_description String A LI-COR underwater quantum sensor measured light on a 12h:12h light:dark schedule.
attribute NC_GLOBAL instruments_0_dataset_instrument_nid String 706186
attribute NC_GLOBAL instruments_0_description String The LI-192 Underwater Quantum Sensor (UWQ) measures underwater or atmospheric Photon Flux Density (PPFD) (Photosynthetically Available Radiation from 360 degrees) using a Silicon Photodiode and glass filters encased in a waterproof housing.  The LI-192 is cosine corrected and features corrosion resistant, rugged construction for use in freshwater or saltwater and pressures up to 800 psi (5500 kPa, 560 meters depth). Typical output is in um s-1 m-2.  The LI-192 uses computer-tailored filter glass to achieve the desired quantum response. Calibration is traceable to NIST.  The LI-192 serial numbers begin with UWQ-XXXXX.  LI-COR has been producing Underwater Quantum Sensors since 1973.  \n\nThese LI-192 sensors are typically listed as LI-192SA to designate the 2-pin connector on the base of the housing  and require an Underwater Cable (LI-COR part number 2222UWB) to connect to the pins on the Sensor and connect to a data recording device. \n\nThe LI-192 differs from the LI-193 primarily in sensitivity and angular response.\n\n193:  Sensitivity: Typically 7 uA per 1000 umol s-1 m-2 in water.  Azimuth: < ± 3% error over 360° at 90° from normal axis.  Angular Response: < ± 4% error up to ± 90° from normal axis  \n\n192: Sensitivity: Typically 4 uA per 1000 umol s-1 m-2 in water.  Azimuth: < ± 1% error over 360° at 45° elevation.  Cosine Correction: Optimized for underwater and atmospheric use.\n\n(www.licor.com)
attribute NC_GLOBAL instruments_0_instrument_external_identifier String https://vocab.nerc.ac.uk/collection/L22/current/TOOL0120/ (external link)
attribute NC_GLOBAL instruments_0_instrument_name String LI-COR LI-192 PAR Sensor
attribute NC_GLOBAL instruments_0_instrument_nid String 475
attribute NC_GLOBAL instruments_0_supplied_name String LI-COR underwater quantum sensor LI-192
attribute NC_GLOBAL instruments_1_acronym String Manual Biota Sampler
attribute NC_GLOBAL instruments_1_dataset_instrument_description String At each reef site, small skeletal cores (diameter = 3.5 cm) were removed from massive colonies (one core per colony) at 2–3mdepth using underwater pneumatic drills.
attribute NC_GLOBAL instruments_1_dataset_instrument_nid String 706185
attribute NC_GLOBAL instruments_1_description String Manual Biota Sampler indicates that a sample was collected in situ by a person, possibly using a hand-held collection device such as a jar, a net or their hands.
attribute NC_GLOBAL instruments_1_instrument_external_identifier String https://vocab.nerc.ac.uk/collection/L05/current/90/ (external link)
attribute NC_GLOBAL instruments_1_instrument_name String Manual Biota Sampler
attribute NC_GLOBAL instruments_1_instrument_nid String 565
attribute NC_GLOBAL instruments_1_supplied_name String pneumatic drill
attribute NC_GLOBAL instruments_2_acronym String Automatic titrator
attribute NC_GLOBAL instruments_2_dataset_instrument_description String Automated gran titrations for TA were run on duplicate 1 ml samples using a Metrohm Titrando 808 and 730 Sample Changer.
attribute NC_GLOBAL instruments_2_dataset_instrument_nid String 706189
attribute NC_GLOBAL instruments_2_description String Instruments that incrementally add quantified aliquots of a reagent to a sample until the end-point of a chemical reaction is reached.
attribute NC_GLOBAL instruments_2_instrument_external_identifier String https://vocab.nerc.ac.uk/collection/L05/current/LAB12/ (external link)
attribute NC_GLOBAL instruments_2_instrument_name String Automatic titrator
attribute NC_GLOBAL instruments_2_instrument_nid String 682
attribute NC_GLOBAL instruments_2_supplied_name String Metrohm Titrando 808 and 730 Sample Changer
attribute NC_GLOBAL instruments_3_acronym String Spectrophotometer
attribute NC_GLOBAL instruments_3_dataset_instrument_description String Spectrophotometric pH measurements were made with 2 mM m-Cresol purple indicator dye using a spectrometer with a 100 mm flow cell (Ocean Optics, mean precision = 0.005).
attribute NC_GLOBAL instruments_3_dataset_instrument_nid String 706188
attribute NC_GLOBAL instruments_3_description String An instrument used to measure the relative absorption of electromagnetic radiation of different wavelengths in the near infra-red, visible and ultraviolet wavebands by samples.
attribute NC_GLOBAL instruments_3_instrument_external_identifier String https://vocab.nerc.ac.uk/collection/L05/current/LAB20/ (external link)
attribute NC_GLOBAL instruments_3_instrument_name String Spectrophotometer
attribute NC_GLOBAL instruments_3_instrument_nid String 707
attribute NC_GLOBAL instruments_3_supplied_name String Ocean Optics pH spectrophotometer
attribute NC_GLOBAL instruments_4_acronym String MFC
attribute NC_GLOBAL instruments_4_dataset_instrument_description String Each coral cup was also bubbled with either compressed air or mixed compressed air and CO2 gas controlled by pairs of mass flow controllers (Aalborg Instruments).
attribute NC_GLOBAL instruments_4_dataset_instrument_nid String 706187
attribute NC_GLOBAL instruments_4_description String Mass Flow Controller (MFC) - A device used to measure and control the flow of fluids and gases
attribute NC_GLOBAL instruments_4_instrument_name String Mass Flow Controller
attribute NC_GLOBAL instruments_4_instrument_nid String 712
attribute NC_GLOBAL instruments_4_supplied_name String Aalborg Instruments mass flow controllers GFCS-010554 and GFCS-011067
attribute NC_GLOBAL instruments_5_acronym String Scale
attribute NC_GLOBAL instruments_5_dataset_instrument_description String Corals were weighed using a balance with a weigh-below hook (Sartorius GC803S).
attribute NC_GLOBAL instruments_5_dataset_instrument_nid String 706190
attribute NC_GLOBAL instruments_5_description String An instrument used to measure weight or mass.
attribute NC_GLOBAL instruments_5_instrument_external_identifier String https://vocab.nerc.ac.uk/collection/L05/current/LAB13/ (external link)
attribute NC_GLOBAL instruments_5_instrument_name String Scale
attribute NC_GLOBAL instruments_5_instrument_nid String 714
attribute NC_GLOBAL instruments_5_supplied_name String Sartorius GC803S scale
attribute NC_GLOBAL keywords String bco, bco-dmo, biological, calc, calc_rate, calc_rate_se, carbon, carbon dioxide, chemical, co2, CO2_treatment, data, dataset, dioxide, dmo, erddap, management, oceanography, office, omega, preliminary, rate, reef, reef_omega_AR, treatment, week
attribute NC_GLOBAL license String https://www.bco-dmo.org/dataset/706178/license (external link)
attribute NC_GLOBAL metadata_source String https://www.bco-dmo.org/api/dataset/706178 (external link)
attribute NC_GLOBAL param_mapping String {'706178': {}}
attribute NC_GLOBAL parameter_source String https://www.bco-dmo.org/mapserver/dataset/706178/parameters (external link)
attribute NC_GLOBAL people_0_affiliation String Woods Hole Oceanographic Institution
attribute NC_GLOBAL people_0_affiliation_acronym String WHOI
attribute NC_GLOBAL people_0_person_name String Anne L Cohen
attribute NC_GLOBAL people_0_person_nid String 51428
attribute NC_GLOBAL people_0_role String Principal Investigator
attribute NC_GLOBAL people_0_role_type String originator
attribute NC_GLOBAL people_1_affiliation String Woods Hole Oceanographic Institution
attribute NC_GLOBAL people_1_affiliation_acronym String WHOI
attribute NC_GLOBAL people_1_person_name String Hannah Barkley
attribute NC_GLOBAL people_1_person_nid String 560803
attribute NC_GLOBAL people_1_role String Contact
attribute NC_GLOBAL people_1_role_type String related
attribute NC_GLOBAL people_2_affiliation String Woods Hole Oceanographic Institution
attribute NC_GLOBAL people_2_affiliation_acronym String WHOI BCO-DMO
attribute NC_GLOBAL people_2_person_name String Shannon Rauch
attribute NC_GLOBAL people_2_person_nid String 51498
attribute NC_GLOBAL people_2_role String BCO-DMO Data Manager
attribute NC_GLOBAL people_2_role_type String related
attribute NC_GLOBAL project String Coral Reef Ecosystem OA Impact
attribute NC_GLOBAL projects_0_acronym String Coral Reef Ecosystem OA Impact
attribute NC_GLOBAL projects_0_description String text copied from the NSF award abstract: \nMuch of our understanding of the impact of ocean acidification on coral reef calcification comes from laboratory manipulation experiments in which reef organisms are removed from their natural habitat and reared under conditions of calcium carbonate saturation (Omega) predicted for the tropical oceans at the end of this century. By comparison, there is a paucity of in situ data describing the sensitivity of coral reef ecosystems to changes in calcium carbonate saturation. Yet emerging evidence suggests there may be critical differences between the calcification response of organisms in culture and the net calcification response of a coral reef ecosystem, to the same degree of change in calcium carbonate saturation. In the majority of cases, the sensitivity of net reef calcification to changing calcium carbonate saturation is more severe than laboratory manipulation experiments predict. Clearly, accurate predictions of the response of coral reef ecosystems to 21st century ocean acidification will depend on a robust characterization of ecosystem-scale responses and an understanding of the fundamental processes that shape them. Using existing data, the investigators show that the sensitivity of coral reef ecosystem calcification to Delta calcium carbonate saturation conforms to the empirical rate equation R=k(Aragonite saturation state -1)n, which also describes the relationship between the rate of net abiogenic CaCO3 precipitation (R) and the degree of Aragonite supersaturation (Aragonite saturation state-1). By implication, the net ecosystem calcification (NEC) response to ocean acidification is governed by fundamental laws of physical chemistry and is potentially predictable across space and time. When viewed this way, the existing, albeit sparse, dataset of NEC reveals distinct patterns that, if verified, have important implications for how different coral reef ecosystems will respond to 21st century ocean acidification. The investigators have outlined a research program designed to build on this proposition. The project expands the currently sparse dataset of ecosystem-scale observations at four strategically placed reef sites: 2 sites in the Republic of Palau, Caroline Islands, Micronesia, western Pacific Ocean; a third at Dongsha Atoll, Pratas Islands, South China Sea; and the fourth at Kingman Reef, US Northern Line Islands, 6 deg. 23 N, 162 deg. 25 W.  The four selected sites will allow investigators to test the following hypotheses: (1) The sensitivity (\"n\" in the rate equation) of coral reef ecosystem calcification to Delta Aragonite saturation state decreases with decreasing Aragonite saturation state. By implication, the rate at which reef calcification declines will slow as ocean acidification progresses over the course of this century. (2) The energetic status of the calcifying community is a key determinant of absolute rates of net ecosystem calcification (\"k\" in the rate equation), which, combined with n, defines the Aragonite saturation state value at which NEC approaches zero. By implication, the shift from net calcification to net dissolution will be delayed in healthy, energetically replete coral reef ecosystems and accelerated in perturbed, energetically depleted ecosystems. and (3) The calcification response of individual colonies of dominant reef calcifiers (corals and algae) is weaker than the measured ecosystem-scale response to the same change in Aragonite saturation state. By implication, processes not adequately captured in laboratory experiments, such as bioerosion and dissolution, will play an important role in the coral reef response to ocean acidification.\nBroader Impacts: Ocean acidification threatens the livelihoods of 500 million people worldwide who depend on coral reefs to provide habitable and agricultural land, food, building materials, coastal protection and income from tourism. Yet data emerging from ocean acidification (OA) studies point to critical gaps in our knowledge of reef ecosystem-scale responses to OA that currently limit our ability to predict the timing and severity of its impact on different reefs in different parts of the world. Using existing data generated by the investigators and others, this project will address a series of related hypotheses, which, if verified by the research, will have an immediate, direct impact on predictions of coral reef resilience in a high CO2 world. This project brings together expertise in coral reef biogeochemistry, chemical oceanography and physical oceanography to focus on a problem that has enormous societal, economic and conservation relevance. In addition to sharing the resultant data via BCO-DMO, project data will also be contributed to the Ocean Acidification International Coordination Centre (OA-ICC) data collection hosted at the PANGAEA Open Access library (http://www.pangaea.de).
attribute NC_GLOBAL projects_0_end_date String 2015-08
attribute NC_GLOBAL projects_0_geolocation String Republic of Palau, Caroline Islands, Micronesia, western Pacific Ocean; Dongsha Atoll, Pratas Islands, South China Sea; Kingman Reef, US Northern Line Islands, 6 deg. 23 N, 162 deg. 25 W
attribute NC_GLOBAL projects_0_name String Toward Predicting the Impact of Ocean Acidification on Net Calcification by a Broad Range of Coral Reef Ecosystems: Identifying Patterns and Underlying Causes
attribute NC_GLOBAL projects_0_project_nid String 520413
attribute NC_GLOBAL projects_0_start_date String 2012-09
attribute NC_GLOBAL publisher_name String Biological and Chemical Oceanographic Data Management Office (BCO-DMO)
attribute NC_GLOBAL publisher_type String institution
attribute NC_GLOBAL sourceUrl String (local files)
attribute NC_GLOBAL standard_name_vocabulary String CF Standard Name Table v55
attribute NC_GLOBAL summary String Weekly coral calcification rates in the CO2 manipulation experiment conducted on Porites corals from Palau.
attribute NC_GLOBAL title String [Weekly Calcification Rates] - Weekly coral calcification rates in the CO2 manipulation experiment conducted on Porites corals from Palau (Toward Predicting the Impact of Ocean Acidification on Net Calcification by a Broad Range of Coral Reef Ecosystems: Identifying Patterns and Underlying Causes)
attribute NC_GLOBAL version String 1
attribute NC_GLOBAL xml_source String osprey2erddap.update_xml() v1.3
variable week byte
attribute week _FillValue byte 127
attribute week actual_range byte 3, 8
attribute week bcodmo_name String time_point
attribute week description String Week of experiment
attribute week long_name String Week
attribute week units String unitless
variable CO2_treatment String
attribute CO2_treatment bcodmo_name String treatment
attribute CO2_treatment description String Experimental carbon dioxide level (low, medium, high)
attribute CO2_treatment long_name String CO2 Treatment
attribute CO2_treatment units String unitless
variable reef_omega_AR float
attribute reef_omega_AR _FillValue float NaN
attribute reef_omega_AR actual_range float 2.3, 3.7
attribute reef_omega_AR bcodmo_name String OM_ar
attribute reef_omega_AR description String Saturation state of aragonite of the reef where each coral was collected
attribute reef_omega_AR long_name String Reef Omega AR
attribute reef_omega_AR units String unitless
variable calc_rate float
attribute calc_rate _FillValue float NaN
attribute calc_rate actual_range float -2.867, 13.143
attribute calc_rate bcodmo_name String calcification
attribute calc_rate description String Mean calcification rate of each CO2 and reef group determined by difference between weekly buoyant weight measurements
attribute calc_rate long_name String Calc Rate
attribute calc_rate units String milligrams per square centimeter per week (mg/cm2/wk)
variable calc_rate_se float
attribute calc_rate_se _FillValue float NaN
attribute calc_rate_se actual_range float 0.996, 3.468
attribute calc_rate_se bcodmo_name String calcification
attribute calc_rate_se description String Standard error of calcification rates
attribute calc_rate_se long_name String Calc Rate Se
attribute calc_rate_se units String milligrams per square centimeter per week (mg/cm2/wk)

 
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