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Maia's Notes
Maia Powell edited this page Jun 15, 2023
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6/14 [Wednesday] - Began required readings
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Water in the Balance (Famiglietti & Rodell, 2013)
- Mentions a lot of relevant terminology that will likely arise again: groundwater, aquifer, basin, discharge
- What causes water to move? How does water move?
- How hard is it to quantify/measure/predict water evaporation? Is it as simple as computing the missing water?
- What "political barriers" are there in climate justice work?
- May need to research "water security" and "water diplomacy".
- Can population data be incorporated into climate models? If so, how? -- spatial population data may not be representative of general water demand
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Groundwater depletion during drought threatens future water security of the Colorado River Basin (Castle et al., 2014)
- Relevant terminology: snow water equivalent (SWE), mass balance, terrestrial water storage anomalies (TWSA), snowpack
- Are there other major basins/areas that allocate water/resources on such a large scale (besides the CBR)?
- May be interesting to look at a timeline of climate justice/CBR successes (in terms of bills passing, etc.).
- How important is it to understand the finer details of the relationship between gravity and water (i.e. how GRACE works)?
- Skipped methods section for now, but it will likely be relevant later in the project
- "conjunctive surface water and groundwater management plan is essential for sustainable water management in the Basin" -- this is a question that has been around for a long time it seems
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Preliminary search into datasets
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Monthly Mass Grids - Global mascons (JPL RL06.1_v03)/JPL GRACE and GRACE-FO Mascon Ocean, Ice, and Hydrology Equivalent Water Height Coastal Resolution Improvement (CRI) Filtered Release 06.1 Version 03
- In netCDF format -- "NetCDF (network Common Data Form) is a set of interfaces for array-oriented data access and a freely distributed collection of data access libraries for C, Fortran, C++, Java, and other languages"
- Relevant terminology:
- "Mass Concentration blocks (mascons) are essentially another form of gravity field basis functions to which GRACE’s inter-satellite ranging observations are fit"
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Monthly Mass Grids - Global mascons (JPL RL06.1_v03)/JPL GRACE and GRACE-FO Mascon Ocean, Ice, and Hydrology Equivalent Water Height Coastal Resolution Improvement (CRI) Filtered Release 06.1 Version 03
6/15 [Thursday] - Continuing required readings
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Contributions of GRACE to understanding climate change (Tapley et al., 2019)
- Overview: "highlights some representative breakthroughs"
- Relevant terminology: geodesy, mean field, subaqueous, altimetry, firn compaction, speckle, lithospgere, glacial-isostatic adjustment (GIA)—a slow rebound of the Earth’s underlying lithosphere and mantle following readjustment from past ice-sheet retreat, El Nino, La Nina, in-situ, wetting, drying, TWS - sum of snow, ice, surface water, soil moisture and groundwater, streamflow, Argo, essential climate variables (ECVs)
- Need to mindful of natural variability and anthropogenic influence
- Note: provides semi-approachable explanation of how GRACE works/takes measurements
- (Probably a silly question) how challenging is filtering water/using ocean water to mediate water scarcity/insecurity?
- What role does soil moisture play in GRACE's measurements? Is "greenwater" picked up by GRACE?
- Note: being able to track exact droughts/circumstances [like figure 3] based on measurements is very cool
- "Of the world’s 37 largest aquifer systems, 13 were found to be suffering critical depletion" -- what are these 37? And 13?
- What is the role of carbon in the hydrological cycle/climate change/etc.?
- Need to be mindful of natural variations vs. anthropogenic climate change or human water-management practices -- limitations of everyday individuals to contribute to large scale water conservation/sustainability practices
- Need to educate myself more on Earth's energy/energy imbalance -- how is this measured? What does it mean?
- How much work has been done on assimilating multiple types of data (to include GRACE) has been done? Where are there areas where the field is lacking?
- Very interesting that a model incorporating GRACE was used for seasonal wildfire prediction!
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Scenario Planning: Embracing the Potential for Extreme Events in the Colorado River Basin (Gerlak et al., 2021)
- Relevant terminology: Scenario planning (SP)