Cal-Adapt

Cal-Adapt is California’s official portal for peer-reviewed climate data.

Datasets are selected with guidance and priorities from California State agencies.

Projected Climate Data:

Extent of LOCA downscaled climate data layers:

Cal-Adapt Data

Options for Accessing Cal-Adapt Data

More info:

caladaptR

Key Features

Main Uses

Prerequisites

The user is expected to know:

caladaptR workflow

In general, there are five steps to using caladaptR:

Quick Example

1. Load the package:

library(caladaptr)

2. Create an API request object:

cap1 <- ca_loc_pt(coords = c(-121.4687, 38.5938)) %>%  ## specify a location
  ca_cvar(c("tasmax", "tasmin")) %>%                   ## climate variables
  ca_gcm(gcms[1:4]) %>%                                ## GCM(s)
  ca_scenario(scenarios[1:2]) %>%                      ## emission scenarios(s)
  ca_period("year") %>%                                ## temporal aggregation period
  ca_years(start = 2040, end = 2060)                   ## start and end dates

3. Check API request

cap1

## Cal-Adapt API Request
## Location(s): 
##   x: -121.469
##   y: 38.594
## Variable(s): tasmax, tasmin
## Temporal aggregration period(s): year
## GCM(s): HadGEM2-ES, CNRM-CM5, CanESM2, MIROC5
## Scenario(s): rcp45, rcp85
## Dates: 2040-01-01 to 2060-12-31
## 

cap1 %>% ca_preflight()

## General issues

##  - none found

## Issues for querying values

##  - none found

## Issues for downloading rasters

##  - none found

plot(cap1, locagrid = TRUE)

4. Fetch data:

cap1_tbl <- ca_getvals_tbl(cap1, quiet = TRUE)

5. View the results

cap1_tbl %>% slice(1:10)

Need Big Data?

No problem!

cap1_db <- cap1 %>% 
  ca_getvals_db(db_fn = "c:/data/mydata.sqlite", db_tbl = "temp_min_max")

Need Rasters?

No problem!

cap1_tifs <- cap1 %>% 
  ca_getrst_stars(out_dir = "c:/data/tifs")

https://r-spatial.github.io/stars/

Shiny Apps

See samples:

## Install caladaptr.apps and all dependent packages
remotes::install_github("ucanr-igis/caladaptr.apps")
library(caladaptr.apps)

## Launch the time series app
ca_launch("timeseries")

## Launch the projected chill portions app
ca_launch("chill")

Learning More

Website: https://ucanr-igis.github.io/caladaptr/