Checking for non-preferred file/folder path names (may take a long time depending on the number of files/folders) ...
This resource contains some files/folders that have non-preferred characters in their name. Show non-conforming files/folders.
This resource contains content types with files that need to be updated to match with metadata changes. Show content type files that need updating.
Authors: |
|
|
---|---|---|
Owners: |
|
This resource does not have an owner who is an active HydroShare user. Contact CUAHSI (help@cuahsi.org) for information on this resource. |
Type: | Resource | |
Storage: | The size of this resource is 118.2 KB | |
Created: | Nov 19, 2019 at 4:50 a.m. | |
Last updated: | Apr 23, 2020 at 2:16 p.m. | |
Citation: | See how to cite this resource | |
Content types: | Single File Content |
Sharing Status: | Public |
---|---|
Views: | 1894 |
Downloads: | 67 |
+1 Votes: | Be the first one to this. |
Comments: | No comments (yet) |
Abstract
Like many mountainous areas in the tropics, watersheds in the Luquillo Mountains of eastern Puerto Rico have abundant rainfall and stream discharge and provide much of the water supply for the densely populated metropolitan areas nearby. Projected changes in regional temperature and atmospheric dynamics as a result of global warming suggest that water availability will be affected by changes in rainfall patterns. It is essential to understand the relative importance of different weather systems to water supply to determine how changes in rainfall patterns, interacting with geology and vegetation, will affect the water balance. To help determine the links between climate and water availability, stable isotope signatures of precipitation from different weather systems were established to identify those that are most important in maintaining streamflow and groundwater recharge. Precipitation stable isotope values in the Luquillo Mountains had a large range, from fog/cloud water with δ2H, δ18O values as high as +12 ‰, −0.73 ‰ to tropical storm rain with values as low as −127 ‰, −16.8 ‰. Temporal isotope values exhibit a reverse seasonality from those observed in higher latitude continental watersheds, with higher isotopic values in the winter and lower values in the summer. Despite the higher volume of convective and low-pressure system rainfall, stable isotope analyses indicated that under the current rainfall regime, frequent trade -wind orographic showers contribute much of the groundwater recharge and stream base flow. Analysis of rain events using 20 years of 15 -minute resolution data at a mountain station (643 m) showed an increasing trend in rainfall amount, in agreement with increased precipitable water in the atmosphere, but differing from climate model projections of drying in the region. The mean intensity of rain events also showed an increasing trend. The determination of recharge sources from stable isotope tracers indicates that water supply will be affected if regional atmospheric dynamics change trade- wind orographic rainfall patterns in the Caribbean.
For more data a USGS open file report is available: Stable Isotope (δ18O and δ2H) Data for Precipitation, Stream Water, and Groundwater in Puerto Rico http://dx.doi.org/10.3133/ofr20141101
Subject Keywords
Coverage
Spatial
Temporal
Start Date: | |
---|---|
End Date: |
Content
ReadMe.md
LCZO -- Stable Isotopes -- Stable Isotope (δ18O and δ2H) Data -- Puerto Rico -- (1994-2013)
OVERVIEW
Description/Abstract
Like many mountainous areas in the tropics, watersheds in the Luquillo Mountains of eastern Puerto Rico have abundant rainfall and stream discharge and provide much of the water supply for the densely populated metropolitan areas nearby. Projected changes in regional temperature and atmospheric dynamics as a result of global warming suggest that water availability will be affected by changes in rainfall patterns. It is essential to understand the relative importance of different weather systems to water supply to determine how changes in rainfall patterns, interacting with geology and vegetation, will affect the water balance. To help determine the links between climate and water availability, stable isotope signatures of precipitation from different weather systems were established to identify those that are most important in maintaining streamflow and groundwater recharge. Precipitation stable isotope values in the Luquillo Mountains had a large range, from fog/cloud water with δ2H, δ18O values as high as +12 ‰, −0.73 ‰ to tropical storm rain with values as low as −127 ‰, −16.8 ‰. Temporal isotope values exhibit a reverse seasonality from those observed in higher latitude continental watersheds, with higher isotopic values in the winter and lower values in the summer. Despite the higher volume of convective and low-pressure system rainfall, stable isotope analyses indicated that under the current rainfall regime, frequent trade -wind orographic showers contribute much of the groundwater recharge and stream base flow. Analysis of rain events using 20 years of 15 -minute resolution data at a mountain station (643 m) showed an increasing trend in rainfall amount, in agreement with increased precipitable water in the atmosphere, but differing from climate model projections of drying in the region. The mean intensity of rain events also showed an increasing trend. The determination of recharge sources from stable isotope tracers indicates that water supply will be affected if regional atmospheric dynamics change trade- wind orographic rainfall patterns in the Caribbean.
For more data a USGS open file report is available: Stable Isotope (δ18O and δ2H) Data for Precipitation, Stream Water, and Groundwater in Puerto Rico http://dx.doi.org/10.3133/ofr20141101
Creator/Author
Martha A. Scholl|Angel Torres-Sanchez|Manuel Rosario-Torres
CZOs
Luquillo
Contact
Martha Scholl; mascholl@usgs.gov
Subtitle
Stable Isotope (δ18O and δ2H) Data for Precipitation, Stream Water, and Groundwater in Puerto Rico
SUBJECTS
Disciplines
Hydrology|Water Chemistry|Climatology / Meteorology
Topics
Stable Isotopes
Subtopic
Stable Isotope (δ18O and δ2H) Data
Keywords
Stable isotope|δ18O|δ2H|Precipitation|Stream Water|Groundwater|water balance|fog water|cloud water
Variables
δ18O|δ2H|precipitation
Variables ODM2
delta-18O of H2O|Deuterium|Precipitation
TEMPORAL
Date Start
1994-08-31
Date End
2013-03-26
SPATIAL
Field Areas
Northeastern Puerto Rico and the Luquillo Mountains|Rio Icacos|East Peak|Rio Mameyes
Location
Puerto Rico
North latitude
18.4119
South latitude
18.1707
West longitude
-65.8473
East longitude
-65.6751
REFERENCE
Citation
Scholl, M.A., Torres-Sanchez, A., and Rosario-Torres, M., 2014, Stable isotope (δ18O and δ2H) data for precipitation, stream water, and groundwater in Puerto Rico: U.S. Geological Survey Open-File Report 2014–1101, 29 p., http://dx.doi.org/10.3133/ofr20141101.
CZO ID
3850
Additional Metadata
Name | Value |
---|---|
czos | Luquillo |
czo_id | 3850 |
citation | Scholl, M.A., Torres-Sanchez, A., and Rosario-Torres, M., 2014, Stable isotope (δ18O and δ2H) data for precipitation, stream water, and groundwater in Puerto Rico: U.S. Geological Survey Open-File Report 2014–1101, 29 p., http://dx.doi.org/10.3133/ofr20141101. |
keywords | Stable isotope, δ18O, δ2H, Precipitation, Stream Water, Groundwater, water balance, fog water, cloud water |
subtitle | Stable Isotope (δ18O and δ2H) Data for Precipitation, Stream Water, and Groundwater in Puerto Rico |
variables | δ18O, δ2H, precipitation |
disciplines | Hydrology, Water Chemistry, Climatology / Meteorology |
How to Cite
This resource is shared under the Creative Commons Attribution CC BY.
http://creativecommons.org/licenses/by/4.0/
Comments
There are currently no comments
New Comment