Update paper.md

paper/paper.md

@@ -41,7 +41,7 @@ Heating and cooling degree days are commonly used as meteorological indices in t
 
 `helios` is designed to provide heating and cooling degrees to GCAM (or GCAM-USA) at two spatiotemporal scales: (1) HDH and CDH for the U.S. States for dispatch segments by building thermal service (for GCAM-USA); (2) annual HDD and CDD for GCAM's 32 geopolitical regions at 5-year time step by building thermal service (for GCAM-Regions). Beyond providing information for GCAM, `helios` can serve as a general tool to calculate heating and cooling degrees at a monthly time step and various spatial scales (e.g., country, basin). The use of `helios` requires users to provide information about the input files, such as the climate model source for climate data and the variable name for temperature. For example, the ISIMIP-CMIP data uses "tas" for the variable name for temperature while the WRF data uses "T2". Figure 1 shows the workflow for both GCAM-USA and GCAM-Regions. More details can be accessed in the `helios` [documentation](https://jgcri.github.io/helios/index.html) page on Github.
 
-![An example of the Helios workflow using two types of input datasets (e.g., global data from CMIP6 and CONUS data from WRF). This demonstration showcases Helios' capability to generate heating and cooling degrees by GCAM region or U.S. States, among other spatiotemporal scales. \label{fig:1}](Fig1_helios_workflow.jpg)
+![An example of the helios workflow using two types of input datasets (e.g., global data from CMIP6 and CONUS data from WRF). This demonstration showcases helios' capability to generate heating and cooling degrees by GCAM region or U.S. States, among other spatiotemporal scales. \label{fig:1}](Fig1_helios_workflow.jpg)
 
 Working with climate data can pose challenges, given large data sizes and diverse formats, spatiotemporal resolutions, data structures, and dimensions involved. The `helios` package provides functionality that makes it more convenient for users to manipulate climate data. `helios` provides easier access to various climate data types in a simplified format, facilitates the calculation of heating and cooling degrees using a standardized methodology, and ensures quality control through detailed diagnostics. There are five main functions provided by `helios`: